| Message ID | 20200507103119.11219-1-david@redhat.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | virtio-mem: paravirtualized memory | expand |
On Thu, May 07, 2020 at 12:31:04PM +0200, David Hildenbrand wrote: > This series is based on latest linux-next. The patches are located at: > https://github.com/davidhildenbrand/linux.git virtio-mem-v3 > > Patch #1 - #10 where contained in v2 and only contain minor modifications > (mostly smaller fixes). The remaining patches are new and contain smaller > optimizations. Looks like you lost some acks, in particular I'd like to preserve Andrew Morton's ack. > Details about virtio-mem can be found in the cover letter of v2 [1]. A > basic QEMU implementation was posted yesterday [2]. > > [1] https://lkml.kernel.org/r/20200311171422.10484-1-david@redhat.com > [2] https://lkml.kernel.org/r/20200506094948.76388-1-david@redhat.com > > v2 -> v3: > - "virtio-mem: Paravirtualized memory hotplug" > -- Include "linux/slab.h" to fix build issues > -- Remember the "region_size", helpful for patch #11 > -- Minor simplifaction in virtio_mem_overlaps_range() > -- Use notifier_from_errno() instead of notifier_to_errno() in notifier > -- More reliable check for added memory when unloading the driver > - "virtio-mem: Allow to specify an ACPI PXM as nid" > -- Also print the nid > - Added patch #11-#15 > > Cc: Sebastien Boeuf <sebastien.boeuf@intel.com> > Cc: Samuel Ortiz <samuel.ortiz@intel.com> > Cc: Robert Bradford <robert.bradford@intel.com> > Cc: Luiz Capitulino <lcapitulino@redhat.com> > Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com> > Cc: teawater <teawaterz@linux.alibaba.com> > Cc: Igor Mammedov <imammedo@redhat.com> > Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> > > David Hildenbrand (15): > virtio-mem: Paravirtualized memory hotplug > virtio-mem: Allow to specify an ACPI PXM as nid > virtio-mem: Paravirtualized memory hotunplug part 1 > virtio-mem: Paravirtualized memory hotunplug part 2 > mm: Allow to offline unmovable PageOffline() pages via > MEM_GOING_OFFLINE > virtio-mem: Allow to offline partially unplugged memory blocks > mm/memory_hotplug: Introduce offline_and_remove_memory() > virtio-mem: Offline and remove completely unplugged memory blocks > virtio-mem: Better retry handling > MAINTAINERS: Add myself as virtio-mem maintainer > virtio-mem: Add parent resource for all added "System RAM" > virtio-mem: Drop manual check for already present memory > virtio-mem: Unplug subblocks right-to-left > virtio-mem: Use -ETXTBSY as error code if the device is busy > virtio-mem: Try to unplug the complete online memory block first > > MAINTAINERS | 7 + > drivers/acpi/numa/srat.c | 1 + > drivers/virtio/Kconfig | 17 + > drivers/virtio/Makefile | 1 + > drivers/virtio/virtio_mem.c | 1962 +++++++++++++++++++++++++++++++ > include/linux/memory_hotplug.h | 1 + > include/linux/page-flags.h | 10 + > include/uapi/linux/virtio_ids.h | 1 + > include/uapi/linux/virtio_mem.h | 208 ++++ > mm/memory_hotplug.c | 81 +- > mm/page_alloc.c | 26 + > mm/page_isolation.c | 9 + > 12 files changed, 2314 insertions(+), 10 deletions(-) > create mode 100644 drivers/virtio/virtio_mem.c > create mode 100644 include/uapi/linux/virtio_mem.h > > -- > 2.25.3
On 07.05.20 12:48, Michael S. Tsirkin wrote: > On Thu, May 07, 2020 at 12:31:04PM +0200, David Hildenbrand wrote: >> This series is based on latest linux-next. The patches are located at: >> https://github.com/davidhildenbrand/linux.git virtio-mem-v3 >> >> Patch #1 - #10 where contained in v2 and only contain minor modifications >> (mostly smaller fixes). The remaining patches are new and contain smaller >> optimizations. > > > Looks like you lost some acks, in particular I'd like to preserve > Andrew Morton's ack. Yeah, seems like I only picked up Pankaj's acks. I can resend.
Hi David,
I got a kernel warning with v2 and v3.
// start a QEMU that is get from https://github.com/davidhildenbrand/qemu/tree/virtio-mem-v2 and setup a file as a ide disk.
/home/teawater/qemu/qemu/x86_64-softmmu/qemu-system-x86_64 -machine pc-i440fx-2.1,accel=kvm,usb=off -cpu host -no-reboot -nographic -device ide-hd,drive=hd -drive if=none,id=hd,file=/home/teawater/old.img,format=raw -kernel /home/teawater/kernel/bk2/arch/x86/boot/bzImage -append "console=ttyS0 root=/dev/sda nokaslr swiotlb=noforce" -m 1g,slots=10,maxmem=2G -smp 1 -s -monitor unix:/home/teawater/qemu/m,server,nowait
// Setup virtio-mem and plug 256m memory in qemu monitor:
object_add memory-backend-ram,id=mem1,size=256m
device_add virtio-mem-pci,id=vm0,memdev=mem1
qom-set vm0 requested-size 256M
// Go back to the terminal and access file system will got following kernel warning.
[ 19.515549] pci 0000:00:04.0: [1af4:1015] type 00 class 0x00ff00
[ 19.516227] pci 0000:00:04.0: reg 0x10: [io 0x0000-0x007f]
[ 19.517196] pci 0000:00:04.0: BAR 0: assigned [io 0x1000-0x107f]
[ 19.517843] virtio-pci 0000:00:04.0: enabling device (0000 -> 0001)
[ 19.535957] PCI Interrupt Link [LNKD] enabled at IRQ 11
[ 19.536507] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver
[ 19.537528] virtio_mem virtio0: start address: 0x100000000
[ 19.538094] virtio_mem virtio0: region size: 0x10000000
[ 19.538621] virtio_mem virtio0: device block size: 0x200000
[ 19.539186] virtio_mem virtio0: memory block size: 0x8000000
[ 19.539752] virtio_mem virtio0: subblock size: 0x400000
[ 19.540357] virtio_mem virtio0: plugged size: 0x0
[ 19.540834] virtio_mem virtio0: requested size: 0x0
[ 20.170441] virtio_mem virtio0: plugged size: 0x0
[ 20.170933] virtio_mem virtio0: requested size: 0x10000000
[ 20.172247] Built 1 zonelists, mobility grouping on. Total pages: 266012
[ 20.172955] Policy zone: Normal
/ # ls
[ 26.724565] ------------[ cut here ]------------
[ 26.725047] ata_piix 0000:00:01.1: DMA addr 0x000000010fc14000+49152 overflow (mask ffffffff, bus limit 0).
[ 26.726024] WARNING: CPU: 0 PID: 179 at /home/teawater/kernel/linux2/kernel/dma/direct.c:364 dma_direct_map_page+0x118/0x130
[ 26.727141] Modules linked in:
[ 26.727456] CPU: 0 PID: 179 Comm: ls Not tainted 5.6.0-rc5-next-20200311+ #9
[ 26.728163] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
[ 26.729305] RIP: 0010:dma_direct_map_page+0x118/0x130
[ 26.729825] Code: 8b 1f e8 3b 70 59 00 48 8d 4c 24 08 48 89 c6 4c 89 2c 24 4d 89 e1 49 89 e8 48 89 da 48 c7 c7 08 6c 34 82 31 c0 e8 d8 8e f7 ff <00
[ 26.731683] RSP: 0000:ffffc90000213838 EFLAGS: 00010082
[ 26.732205] RAX: 0000000000000000 RBX: ffff88803ebeb1b0 RCX: ffffffff82665148
[ 26.732913] RDX: 0000000000000001 RSI: 0000000000000092 RDI: 0000000000000046
[ 26.733621] RBP: 000000000000c000 R08: 00000000000001df R09: 00000000000001df
[ 26.734338] R10: 0000000000000000 R11: ffffc900002135a8 R12: 00000000ffffffff
[ 26.735054] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88803d55f5b0
[ 26.735772] FS: 00000000024e9880(0000) GS:ffff88803ec00000(0000) knlGS:0000000000000000
[ 26.736579] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 26.737162] CR2: 00000000005bfc7f CR3: 0000000107e12004 CR4: 0000000000360ef0
[ 26.737879] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 26.738591] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 26.739307] Call Trace:
[ 26.739564] dma_direct_map_sg+0x64/0xb0
[ 26.739969] ? ata_scsi_write_same_xlat+0x350/0x350
[ 26.740461] ata_qc_issue+0x214/0x260
[ 26.740839] ata_scsi_queuecmd+0x16a/0x490
[ 26.741255] scsi_queue_rq+0x679/0xa60
[ 26.741639] blk_mq_dispatch_rq_list+0x90/0x510
[ 26.742099] ? elv_rb_del+0x1f/0x30
[ 26.742456] ? deadline_remove_request+0x6a/0xb0
[ 26.742926] blk_mq_do_dispatch_sched+0x78/0x100
[ 26.743397] blk_mq_sched_dispatch_requests+0xf9/0x170
[ 26.743924] __blk_mq_run_hw_queue+0x7e/0x130
[ 26.744365] __blk_mq_delay_run_hw_queue+0x107/0x150
[ 26.744874] blk_mq_run_hw_queue+0x61/0x100
[ 26.745299] blk_mq_sched_insert_requests+0x71/0x110
[ 26.745798] blk_mq_flush_plug_list+0x14b/0x210
[ 26.746258] blk_flush_plug_list+0xbf/0xe0
[ 26.746675] blk_finish_plug+0x27/0x40
[ 26.747056] read_pages+0x7c/0x190
[ 26.747399] __do_page_cache_readahead+0x19c/0x1b0
[ 26.747886] filemap_fault+0x54e/0x9a0
[ 26.748268] ? alloc_set_pte+0x102/0x610
[ 26.748673] ? walk_component+0x64/0x2e0
[ 26.749072] ? filemap_map_pages+0xfa/0x3f0
[ 26.749498] ext4_filemap_fault+0x2c/0x3b
[ 26.749911] __do_fault+0x38/0xb0
[ 26.750251] __handle_mm_fault+0xd2a/0x16d0
[ 26.750678] handle_mm_fault+0xe2/0x1f0
[ 26.751069] do_page_fault+0x250/0x590
[ 26.751448] async_page_fault+0x34/0x40
[ 26.751841] RIP: 0033:0x5bfc7f
[ 26.752155] Code: Bad RIP value.
[ 26.752481] RSP: 002b:00007ffef0289cd8 EFLAGS: 00010246
[ 26.752999] RAX: 0000000000000001 RBX: 00007ffef028af81 RCX: 00007ffef028af84
[ 26.753715] RDX: 00007ffef0289e01 RSI: 00007ffef0289ea8 RDI: 0000000000000001
[ 26.754424] RBP: 00000000000000ac R08: 0000000000000001 R09: 0000000000000006
[ 26.755144] R10: 000000000089fc18 R11: 0000000000000246 R12: 00007ffef0289ea8
[ 26.755853] R13: 000000000043a5f0 R14: 0000000000000000 R15: 0000000000000000
[ 26.756560] ---[ end trace 23cc3e9021358587 ]---
[ 26.778034] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 26.778690] ata2.00: failed command: READ DMA
[ 26.779131] ata2.00: cmd c8/00:e8:92:ad:00/00:00:00:00:00/e0 tag 0 dma 118784 in
[ 26.779131] res 50/00:00:0a:80:03/00:00:00:00:00/a0 Emask 0x40 (internal error)
[ 26.780691] ata2.00: status: { DRDY }
[ 26.781603] ata2.00: configured for MWDMA2
[ 26.782034] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
[ 26.782958] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current]
[ 26.783646] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command
[ 26.784321] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 ad 92 00 00 e8 00
[ 26.785056] blk_update_request: I/O error, dev sda, sector 44434 op 0x0:(READ) flags 0x80700 phys_seg 3 prio class 0
[ 26.786118] ata2: EH complete
[ 26.810033] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 26.810690] ata2.00: failed command: READ DMA
[ 26.811133] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in
[ 26.811133] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error)
[ 26.812681] ata2.00: status: { DRDY }
[ 26.813569] ata2.00: configured for MWDMA2
[ 26.813992] ata2: EH complete
[ 26.826031] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 26.826687] ata2.00: failed command: READ DMA
[ 26.827131] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in
[ 26.827131] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error)
[ 26.828668] ata2.00: status: { DRDY }
[ 26.829552] ata2.00: configured for MWDMA2
[ 26.829972] ata2: EH complete
[ 26.842030] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 26.842686] ata2.00: failed command: READ DMA
[ 26.843127] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in
[ 26.843127] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error)
[ 26.844656] ata2.00: status: { DRDY }
[ 26.845538] ata2.00: configured for MWDMA2
[ 26.845961] ata2: EH complete
[ 26.858030] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 26.858690] ata2.00: failed command: READ DMA
[ 26.859132] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in
[ 26.859132] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error)
[ 26.860656] ata2.00: status: { DRDY }
[ 26.861542] ata2.00: configured for MWDMA2
[ 26.861960] ata2: EH complete
[ 26.874030] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 26.874693] ata2.00: failed command: READ DMA
[ 26.875131] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in
[ 26.875131] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error)
[ 26.876675] ata2.00: status: { DRDY }
[ 26.877554] ata2.00: configured for MWDMA2
[ 26.877976] ata2: EH complete
[ 26.890030] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 26.890655] ata2.00: failed command: READ DMA
[ 26.891082] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in
[ 26.891082] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error)
[ 26.892544] ata2.00: status: { DRDY }
[ 26.893408] ata2.00: configured for MWDMA2
[ 26.893812] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
[ 26.894698] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current]
[ 26.895356] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command
[ 26.895993] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 ad fa 00 00 08 00
[ 26.896693] blk_update_request: I/O error, dev sda, sector 44538 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[ 26.897668] ata2: EH complete
[ 26.922032] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 26.922652] ata2.00: failed command: READ DMA
[ 26.923080] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in
[ 26.923080] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error)
[ 26.924538] ata2.00: status: { DRDY }
[ 26.925404] ata2.00: configured for MWDMA2
[ 26.925807] ata2: EH complete
[ 26.938031] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 26.938650] ata2.00: failed command: READ DMA
[ 26.939076] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in
[ 26.939076] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error)
[ 26.940529] ata2.00: status: { DRDY }
[ 26.941391] ata2.00: configured for MWDMA2
[ 26.941793] ata2: EH complete
[ 26.954031] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 26.954652] ata2.00: failed command: READ DMA
[ 26.955079] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in
[ 26.955079] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error)
[ 26.956536] ata2.00: status: { DRDY }
[ 26.957400] ata2.00: configured for MWDMA2
[ 26.957800] ata2: EH complete
[ 26.970031] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 26.970653] ata2.00: failed command: READ DMA
[ 26.971079] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in
[ 26.971079] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error)
[ 26.972536] ata2.00: status: { DRDY }
[ 26.973402] ata2.00: configured for MWDMA2
[ 26.973804] ata2: EH complete
[ 26.986030] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 26.986654] ata2.00: failed command: READ DMA
[ 26.987082] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in
[ 26.987082] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error)
[ 26.988541] ata2.00: status: { DRDY }
[ 26.989406] ata2.00: configured for MWDMA2
[ 26.989807] ata2: EH complete
[ 27.002031] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 27.002653] ata2.00: failed command: READ DMA
[ 27.003083] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in
[ 27.003083] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error)
[ 27.004541] ata2.00: status: { DRDY }
[ 27.005404] ata2.00: configured for MWDMA2
[ 27.005806] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
[ 27.006688] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current]
[ 27.007346] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command
[ 27.007982] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 ad fa 00 00 08 00
[ 27.008680] blk_update_request: I/O error, dev sda, sector 44538 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[ 27.009649] ata2: EH complete
Bus error
I cannot reproduce this warning with set file as nvdimm with following command.
sudo /home/teawater/qemu/qemu/x86_64-softmmu/qemu-system-x86_64 -machine pc,accel=kvm,kernel_irqchip,nvdimm -no-reboot -nographic -kernel /home/teawater/kernel/bk2/arch/x86/boot/bzImage -append "console=ttyS0 root=/dev/pmem0 swiotlb=noforce" -m 1g,slots=1,maxmem=2G -smp 1 -device nvdimm,id=nv0,memdev=mem0 -object memory-backend-file,id=mem0,mem-path=/home/teawater/old.img,size=268435456 -monitor unix:/home/teawater/qemu/m,server,nowait
Best,
Hui
> 2020年5月7日 18:31，David Hildenbrand <david@redhat.com> 写道：
>
> This series is based on latest linux-next. The patches are located at:
> https://github.com/davidhildenbrand/linux.git virtio-mem-v3
>
> Patch #1 - #10 where contained in v2 and only contain minor modifications
> (mostly smaller fixes). The remaining patches are new and contain smaller
> optimizations.
>
> Details about virtio-mem can be found in the cover letter of v2 [1]. A
> basic QEMU implementation was posted yesterday [2].
>
> [1] https://lkml.kernel.org/r/20200311171422.10484-1-david@redhat.com
> [2] https://lkml.kernel.org/r/20200506094948.76388-1-david@redhat.com
>
> v2 -> v3:
> - "virtio-mem: Paravirtualized memory hotplug"
> -- Include "linux/slab.h" to fix build issues
> -- Remember the "region_size", helpful for patch #11
> -- Minor simplifaction in virtio_mem_overlaps_range()
> -- Use notifier_from_errno() instead of notifier_to_errno() in notifier
> -- More reliable check for added memory when unloading the driver
> - "virtio-mem: Allow to specify an ACPI PXM as nid"
> -- Also print the nid
> - Added patch #11-#15
>
> Cc: Sebastien Boeuf <sebastien.boeuf@intel.com>
> Cc: Samuel Ortiz <samuel.ortiz@intel.com>
> Cc: Robert Bradford <robert.bradford@intel.com>
> Cc: Luiz Capitulino <lcapitulino@redhat.com>
> Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
> Cc: teawater <teawaterz@linux.alibaba.com>
> Cc: Igor Mammedov <imammedo@redhat.com>
> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
>
> David Hildenbrand (15):
> virtio-mem: Paravirtualized memory hotplug
> virtio-mem: Allow to specify an ACPI PXM as nid
> virtio-mem: Paravirtualized memory hotunplug part 1
> virtio-mem: Paravirtualized memory hotunplug part 2
> mm: Allow to offline unmovable PageOffline() pages via
> MEM_GOING_OFFLINE
> virtio-mem: Allow to offline partially unplugged memory blocks
> mm/memory_hotplug: Introduce offline_and_remove_memory()
> virtio-mem: Offline and remove completely unplugged memory blocks
> virtio-mem: Better retry handling
> MAINTAINERS: Add myself as virtio-mem maintainer
> virtio-mem: Add parent resource for all added "System RAM"
> virtio-mem: Drop manual check for already present memory
> virtio-mem: Unplug subblocks right-to-left
> virtio-mem: Use -ETXTBSY as error code if the device is busy
> virtio-mem: Try to unplug the complete online memory block first
>
> MAINTAINERS | 7 +
> drivers/acpi/numa/srat.c | 1 +
> drivers/virtio/Kconfig | 17 +
> drivers/virtio/Makefile | 1 +
> drivers/virtio/virtio_mem.c | 1962 +++++++++++++++++++++++++++++++
> include/linux/memory_hotplug.h | 1 +
> include/linux/page-flags.h | 10 +
> include/uapi/linux/virtio_ids.h | 1 +
> include/uapi/linux/virtio_mem.h | 208 ++++
> mm/memory_hotplug.c | 81 +-
> mm/page_alloc.c | 26 +
> mm/page_isolation.c | 9 +
> 12 files changed, 2314 insertions(+), 10 deletions(-)
> create mode 100644 drivers/virtio/virtio_mem.c
> create mode 100644 include/uapi/linux/virtio_mem.h
>
> --
> 2.25.3
>
>
> ---------------------------------------------------------------------
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> For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org
On 14.05.20 08:44, teawater wrote: > Hi David, > > I got a kernel warning with v2 and v3. Hi Hui, thanks for playing with the latest versions. Surprisingly, I can reproduce even by hotplugging a DIMM instead as well - that's good, so it's not related to virtio-mem, lol. Seems to be some QEMU setup issue with older machine types. Can you switch to a newer qemu machine version, especially pc-i440fx-5.0? Both, hotplugging DIMMs and virtio-mem works for me with that QEMU machine just fine. What also seems to make it work with pc-i440fx-2.1, is giving the machine 4G of initial memory (-m 4g,slots=10,maxmem=5G). Cheers! > // start a QEMU that is get from https://github.com/davidhildenbrand/qemu/tree/virtio-mem-v2 and setup a file as a ide disk. > /home/teawater/qemu/qemu/x86_64-softmmu/qemu-system-x86_64 -machine pc-i440fx-2.1,accel=kvm,usb=off -cpu host -no-reboot -nographic -device ide-hd,drive=hd -drive if=none,id=hd,file=/home/teawater/old.img,format=raw -kernel /home/teawater/kernel/bk2/arch/x86/boot/bzImage -append "console=ttyS0 root=/dev/sda nokaslr swiotlb=noforce" -m 1g,slots=10,maxmem=2G -smp 1 -s -monitor unix:/home/teawater/qemu/m,server,nowait > > // Setup virtio-mem and plug 256m memory in qemu monitor: > object_add memory-backend-ram,id=mem1,size=256m > device_add virtio-mem-pci,id=vm0,memdev=mem1 > qom-set vm0 requested-size 256M > > // Go back to the terminal and access file system will got following kernel warning. > [ 19.515549] pci 0000:00:04.0: [1af4:1015] type 00 class 0x00ff00 > [ 19.516227] pci 0000:00:04.0: reg 0x10: [io 0x0000-0x007f] > [ 19.517196] pci 0000:00:04.0: BAR 0: assigned [io 0x1000-0x107f] > [ 19.517843] virtio-pci 0000:00:04.0: enabling device (0000 -> 0001) > [ 19.535957] PCI Interrupt Link [LNKD] enabled at IRQ 11 > [ 19.536507] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver > [ 19.537528] virtio_mem virtio0: start address: 0x100000000 > [ 19.538094] virtio_mem virtio0: region size: 0x10000000 > [ 19.538621] virtio_mem virtio0: device block size: 0x200000 > [ 19.539186] virtio_mem virtio0: memory block size: 0x8000000 > [ 19.539752] virtio_mem virtio0: subblock size: 0x400000 > [ 19.540357] virtio_mem virtio0: plugged size: 0x0 > [ 19.540834] virtio_mem virtio0: requested size: 0x0 > [ 20.170441] virtio_mem virtio0: plugged size: 0x0 > [ 20.170933] virtio_mem virtio0: requested size: 0x10000000 > [ 20.172247] Built 1 zonelists, mobility grouping on. Total pages: 266012 > [ 20.172955] Policy zone: Normal > > / # ls > [ 26.724565] ------------[ cut here ]------------ > [ 26.725047] ata_piix 0000:00:01.1: DMA addr 0x000000010fc14000+49152 overflow (mask ffffffff, bus limit 0). > [ 26.726024] WARNING: CPU: 0 PID: 179 at /home/teawater/kernel/linux2/kernel/dma/direct.c:364 dma_direct_map_page+0x118/0x130 > [ 26.727141] Modules linked in: > [ 26.727456] CPU: 0 PID: 179 Comm: ls Not tainted 5.6.0-rc5-next-20200311+ #9 > [ 26.728163] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 > [ 26.729305] RIP: 0010:dma_direct_map_page+0x118/0x130 > [ 26.729825] Code: 8b 1f e8 3b 70 59 00 48 8d 4c 24 08 48 89 c6 4c 89 2c 24 4d 89 e1 49 89 e8 48 89 da 48 c7 c7 08 6c 34 82 31 c0 e8 d8 8e f7 ff <00 > [ 26.731683] RSP: 0000:ffffc90000213838 EFLAGS: 00010082 > [ 26.732205] RAX: 0000000000000000 RBX: ffff88803ebeb1b0 RCX: ffffffff82665148 > [ 26.732913] RDX: 0000000000000001 RSI: 0000000000000092 RDI: 0000000000000046 > [ 26.733621] RBP: 000000000000c000 R08: 00000000000001df R09: 00000000000001df > [ 26.734338] R10: 0000000000000000 R11: ffffc900002135a8 R12: 00000000ffffffff > [ 26.735054] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88803d55f5b0 > [ 26.735772] FS: 00000000024e9880(0000) GS:ffff88803ec00000(0000) knlGS:0000000000000000 > [ 26.736579] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 26.737162] CR2: 00000000005bfc7f CR3: 0000000107e12004 CR4: 0000000000360ef0 > [ 26.737879] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [ 26.738591] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > [ 26.739307] Call Trace: > [ 26.739564] dma_direct_map_sg+0x64/0xb0 > [ 26.739969] ? ata_scsi_write_same_xlat+0x350/0x350 > [ 26.740461] ata_qc_issue+0x214/0x260 > [ 26.740839] ata_scsi_queuecmd+0x16a/0x490 > [ 26.741255] scsi_queue_rq+0x679/0xa60 > [ 26.741639] blk_mq_dispatch_rq_list+0x90/0x510 > [ 26.742099] ? elv_rb_del+0x1f/0x30 > [ 26.742456] ? deadline_remove_request+0x6a/0xb0 > [ 26.742926] blk_mq_do_dispatch_sched+0x78/0x100 > [ 26.743397] blk_mq_sched_dispatch_requests+0xf9/0x170 > [ 26.743924] __blk_mq_run_hw_queue+0x7e/0x130 > [ 26.744365] __blk_mq_delay_run_hw_queue+0x107/0x150 > [ 26.744874] blk_mq_run_hw_queue+0x61/0x100 > [ 26.745299] blk_mq_sched_insert_requests+0x71/0x110 > [ 26.745798] blk_mq_flush_plug_list+0x14b/0x210 > [ 26.746258] blk_flush_plug_list+0xbf/0xe0 > [ 26.746675] blk_finish_plug+0x27/0x40 > [ 26.747056] read_pages+0x7c/0x190 > [ 26.747399] __do_page_cache_readahead+0x19c/0x1b0 > [ 26.747886] filemap_fault+0x54e/0x9a0 > [ 26.748268] ? alloc_set_pte+0x102/0x610 > [ 26.748673] ? walk_component+0x64/0x2e0 > [ 26.749072] ? filemap_map_pages+0xfa/0x3f0 > [ 26.749498] ext4_filemap_fault+0x2c/0x3b > [ 26.749911] __do_fault+0x38/0xb0 > [ 26.750251] __handle_mm_fault+0xd2a/0x16d0 > [ 26.750678] handle_mm_fault+0xe2/0x1f0 > [ 26.751069] do_page_fault+0x250/0x590 > [ 26.751448] async_page_fault+0x34/0x40 > [ 26.751841] RIP: 0033:0x5bfc7f > [ 26.752155] Code: Bad RIP value. > [ 26.752481] RSP: 002b:00007ffef0289cd8 EFLAGS: 00010246 > [ 26.752999] RAX: 0000000000000001 RBX: 00007ffef028af81 RCX: 00007ffef028af84 > [ 26.753715] RDX: 00007ffef0289e01 RSI: 00007ffef0289ea8 RDI: 0000000000000001 > [ 26.754424] RBP: 00000000000000ac R08: 0000000000000001 R09: 0000000000000006 > [ 26.755144] R10: 000000000089fc18 R11: 0000000000000246 R12: 00007ffef0289ea8 > [ 26.755853] R13: 000000000043a5f0 R14: 0000000000000000 R15: 0000000000000000 > [ 26.756560] ---[ end trace 23cc3e9021358587 ]--- > [ 26.778034] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 > [ 26.778690] ata2.00: failed command: READ DMA > [ 26.779131] ata2.00: cmd c8/00:e8:92:ad:00/00:00:00:00:00/e0 tag 0 dma 118784 in > [ 26.779131] res 50/00:00:0a:80:03/00:00:00:00:00/a0 Emask 0x40 (internal error) > [ 26.780691] ata2.00: status: { DRDY } > [ 26.781603] ata2.00: configured for MWDMA2 > [ 26.782034] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s > [ 26.782958] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] > [ 26.783646] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command > [ 26.784321] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 ad 92 00 00 e8 00 > [ 26.785056] blk_update_request: I/O error, dev sda, sector 44434 op 0x0:(READ) flags 0x80700 phys_seg 3 prio class 0 > [ 26.786118] ata2: EH complete > [ 26.810033] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 > [ 26.810690] ata2.00: failed command: READ DMA > [ 26.811133] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in > [ 26.811133] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) > [ 26.812681] ata2.00: status: { DRDY } > [ 26.813569] ata2.00: configured for MWDMA2 > [ 26.813992] ata2: EH complete > [ 26.826031] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 > [ 26.826687] ata2.00: failed command: READ DMA > [ 26.827131] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in > [ 26.827131] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) > [ 26.828668] ata2.00: status: { DRDY } > [ 26.829552] ata2.00: configured for MWDMA2 > [ 26.829972] ata2: EH complete > [ 26.842030] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 > [ 26.842686] ata2.00: failed command: READ DMA > [ 26.843127] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in > [ 26.843127] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) > [ 26.844656] ata2.00: status: { DRDY } > [ 26.845538] ata2.00: configured for MWDMA2 > [ 26.845961] ata2: EH complete > [ 26.858030] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 > [ 26.858690] ata2.00: failed command: READ DMA > [ 26.859132] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in > [ 26.859132] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) > [ 26.860656] ata2.00: status: { DRDY } > [ 26.861542] ata2.00: configured for MWDMA2 > [ 26.861960] ata2: EH complete > [ 26.874030] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 > [ 26.874693] ata2.00: failed command: READ DMA > [ 26.875131] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in > [ 26.875131] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) > [ 26.876675] ata2.00: status: { DRDY } > [ 26.877554] ata2.00: configured for MWDMA2 > [ 26.877976] ata2: EH complete > [ 26.890030] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 > [ 26.890655] ata2.00: failed command: READ DMA > [ 26.891082] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in > [ 26.891082] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) > [ 26.892544] ata2.00: status: { DRDY } > [ 26.893408] ata2.00: configured for MWDMA2 > [ 26.893812] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s > [ 26.894698] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] > [ 26.895356] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command > [ 26.895993] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 ad fa 00 00 08 00 > [ 26.896693] blk_update_request: I/O error, dev sda, sector 44538 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 > [ 26.897668] ata2: EH complete > [ 26.922032] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 > [ 26.922652] ata2.00: failed command: READ DMA > [ 26.923080] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in > [ 26.923080] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) > [ 26.924538] ata2.00: status: { DRDY } > [ 26.925404] ata2.00: configured for MWDMA2 > [ 26.925807] ata2: EH complete > [ 26.938031] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 > [ 26.938650] ata2.00: failed command: READ DMA > [ 26.939076] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in > [ 26.939076] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) > [ 26.940529] ata2.00: status: { DRDY } > [ 26.941391] ata2.00: configured for MWDMA2 > [ 26.941793] ata2: EH complete > [ 26.954031] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 > [ 26.954652] ata2.00: failed command: READ DMA > [ 26.955079] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in > [ 26.955079] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) > [ 26.956536] ata2.00: status: { DRDY } > [ 26.957400] ata2.00: configured for MWDMA2 > [ 26.957800] ata2: EH complete > [ 26.970031] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 > [ 26.970653] ata2.00: failed command: READ DMA > [ 26.971079] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in > [ 26.971079] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) > [ 26.972536] ata2.00: status: { DRDY } > [ 26.973402] ata2.00: configured for MWDMA2 > [ 26.973804] ata2: EH complete > [ 26.986030] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 > [ 26.986654] ata2.00: failed command: READ DMA > [ 26.987082] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in > [ 26.987082] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) > [ 26.988541] ata2.00: status: { DRDY } > [ 26.989406] ata2.00: configured for MWDMA2 > [ 26.989807] ata2: EH complete > [ 27.002031] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 > [ 27.002653] ata2.00: failed command: READ DMA > [ 27.003083] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in > [ 27.003083] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) > [ 27.004541] ata2.00: status: { DRDY } > [ 27.005404] ata2.00: configured for MWDMA2 > [ 27.005806] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s > [ 27.006688] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] > [ 27.007346] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command > [ 27.007982] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 ad fa 00 00 08 00 > [ 27.008680] blk_update_request: I/O error, dev sda, sector 44538 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 > [ 27.009649] ata2: EH complete > Bus error > > I cannot reproduce this warning with set file as nvdimm with following command. > sudo /home/teawater/qemu/qemu/x86_64-softmmu/qemu-system-x86_64 -machine pc,accel=kvm,kernel_irqchip,nvdimm -no-reboot -nographic -kernel /home/teawater/kernel/bk2/arch/x86/boot/bzImage -append "console=ttyS0 root=/dev/pmem0 swiotlb=noforce" -m 1g,slots=1,maxmem=2G -smp 1 -device nvdimm,id=nv0,memdev=mem0 -object memory-backend-file,id=mem0,mem-path=/home/teawater/old.img,size=268435456 -monitor unix:/home/teawater/qemu/m,server,nowait > > Best, > Hui
> 2020年5月14日 16:48，David Hildenbrand <david@redhat.com> 写道： > > On 14.05.20 08:44, teawater wrote: >> Hi David, >> >> I got a kernel warning with v2 and v3. > > Hi Hui, > > thanks for playing with the latest versions. Surprisingly, I can > reproduce even by hotplugging a DIMM instead as well - that's good, so > it's not related to virtio-mem, lol. Seems to be some QEMU setup issue > with older machine types. > > Can you switch to a newer qemu machine version, especially > pc-i440fx-5.0? Both, hotplugging DIMMs and virtio-mem works for me with > that QEMU machine just fine. I still could reproduce this issue with pc-i440fx-5.0 or pc. Did I miss anything? > > What also seems to make it work with pc-i440fx-2.1, is giving the > machine 4G of initial memory (-m 4g,slots=10,maxmem=5G). After I changed command, I got error when guest kernel boot: sudo /home/teawater/qemu/qemu/x86_64-softmmu/qemu-system-x86_64 -machine pc,accel=kvm,usb=off -cpu host -no-reboot -nographic -device ide-hd,drive=hd -drive if=none,id=hd,file=/home/teawater/old.img,format=raw -kernel /home/teawater/kernel/bk2/arch/x86/boot/bzImage -append "console=ttyS0 root=/dev/sda nokaslr swiotlb=noforce" -m 4g,slots=10,maxmem=5G -smp 1 -s -monitor unix:/home/teawater/qemu/m,server,nowait SeaBIOS (version rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org) iPXE (http://ipxe.org) 00:03.0 CA00 PCI2.10 PnP PMM+BFF905B0+BFEF05B0 CA00 Booting from ROM.. [ 0.000000] Linux version 5.7.0-rc4-next-20200507+ (teawater@iZbp1bv6xzjxt9vmytkdnmZ) (gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39), GNU ld version0 [ 0.000000] Command line: console=ttyS0 root=/dev/sda nokaslr swiotlb=noforce [ 0.000000] KERNEL supported cpus: [ 0.000000] Intel GenuineIntel [ 0.000000] AMD AuthenticAMD [ 0.000000] Hygon HygonGenuine [ 0.000000] Centaur CentaurHauls [ 0.000000] zhaoxin Shanghai [ 0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x008: 'MPX bounds registers' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x010: 'MPX CSR' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x020: 'AVX-512 opmask' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x040: 'AVX-512 Hi256' [ 0.000000] x86/fpu: Supporting XSAVE feature 0x080: 'AVX-512 ZMM_Hi256' [ 0.000000] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 0.000000] x86/fpu: xstate_offset[3]: 832, xstate_sizes[3]: 64 [ 0.000000] x86/fpu: xstate_offset[4]: 896, xstate_sizes[4]: 64 [ 0.000000] x86/fpu: xstate_offset[5]: 960, xstate_sizes[5]: 64 [ 0.000000] x86/fpu: xstate_offset[6]: 1024, xstate_sizes[6]: 512 [ 0.000000] x86/fpu: xstate_offset[7]: 1536, xstate_sizes[7]: 1024 [ 0.000000] x86/fpu: Enabled xstate features 0xff, context size is 2560 bytes, using 'compacted' format. [ 0.000000] BIOS-provided physical RAM map: [ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable [ 0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved [ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x00000000bffdffff] usable [ 0.000000] BIOS-e820: [mem 0x00000000bffe0000-0x00000000bfffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved [ 0.000000] BIOS-e820: [mem 0x0000000100000000-0x000000013fffffff] usable [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] SMBIOS 2.8 present. [ 0.000000] DMI: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 [ 0.000000] Hypervisor detected: KVM [ 0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00 [ 0.000000] kvm-clock: cpu 0, msr 2f12001, primary cpu clock [ 0.000000] kvm-clock: using sched offset of 227993437 cycles [ 0.000002] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.000003] tsc: Detected 2499.998 MHz processor [ 0.001618] last_pfn = 0x140000 max_arch_pfn = 0x400000000 [ 0.001659] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.001666] last_pfn = 0xbffe0 max_arch_pfn = 0x400000000 [ 0.005474] found SMP MP-table at [mem 0x000f5ab0-0x000f5abf] [ 0.005649] check: Scanning 1 areas for low memory corruption [ 0.005676] Using GB pages for direct mapping [ 0.006325] ACPI: Early table checksum verification disabled [ 0.006328] ACPI: RSDP 0x00000000000F58B0 000014 (v00 BOCHS ) [ 0.006330] ACPI: RSDT 0x00000000BFFE1F1E 000038 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001) [ 0.006334] ACPI: FACP 0x00000000BFFE1CF2 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001) [ 0.006339] ACPI: DSDT 0x00000000BFFE0040 001CB2 (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001) [ 0.006341] ACPI: FACS 0x00000000BFFE0000 000040 [ 0.006343] ACPI: APIC 0x00000000BFFE1D66 000078 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001) [ 0.006345] ACPI: HPET 0x00000000BFFE1DDE 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001) [ 0.006347] ACPI: SRAT 0x00000000BFFE1E16 0000E0 (v01 BOCHS BXPCSRAT 00000001 BXPC 00000001) [ 0.006349] ACPI: WAET 0x00000000BFFE1EF6 000028 (v01 BOCHS BXPCWAET 00000001 BXPC 00000001) [ 0.006421] SRAT: PXM 0 -> APIC 0x00 -> Node 0 [ 0.006424] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.006426] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff] [ 0.006428] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x13fffffff] [ 0.006429] ACPI: SRAT: Node 0 PXM 0 [mem 0x140000000-0x3ffffffff] hotplug [ 0.006433] NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00000000-0xbfffffff] [ 0.006435] NUMA: Node 0 [mem 0x00000000-0xbfffffff] + [mem 0x100000000-0x13fffffff] -> [mem 0x00000000-0x13fffffff] [ 0.006449] NODE_DATA(0) allocated [mem 0x13ffd4000-0x13fffdfff] [ 0.007109] Zone ranges: [ 0.007110] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.007111] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.007112] Normal [mem 0x0000000100000000-0x000000013fffffff] [ 0.007113] Device empty [ 0.007114] Movable zone start for each node [ 0.007116] Early memory node ranges [ 0.007117] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.007119] node 0: [mem 0x0000000000100000-0x00000000bffdffff] [ 0.007119] node 0: [mem 0x0000000100000000-0x000000013fffffff] [ 0.007880] Zeroed struct page in unavailable ranges: 130 pages [ 0.007881] Initmem setup node 0 [mem 0x0000000000001000-0x000000013fffffff] [ 0.023595] ACPI: PM-Timer IO Port: 0x608 [ 0.023611] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.023643] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.023646] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) [ 0.023647] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.023648] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.023649] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.023650] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.023656] Using ACPI (MADT) for SMP configuration information [ 0.023657] ACPI: HPET id: 0x8086a201 base: 0xfed00000 [ 0.023663] smpboot: Allowing 1 CPUs, 0 hotplug CPUs [ 0.023674] KVM setup pv remote TLB flush [ 0.023690] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.023692] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff] [ 0.023694] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff] [ 0.023695] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff] [ 0.023698] PM: hibernation: Registered nosave memory: [mem 0xbffe0000-0xbfffffff] [ 0.023699] PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfeffbfff] [ 0.023701] PM: hibernation: Registered nosave memory: [mem 0xfeffc000-0xfeffffff] [ 0.023702] PM: hibernation: Registered nosave memory: [mem 0xff000000-0xfffbffff] [ 0.023703] PM: hibernation: Registered nosave memory: [mem 0xfffc0000-0xffffffff] [ 0.023706] [mem 0xc0000000-0xfeffbfff] available for PCI devices [ 0.023708] Booting paravirtualized kernel on KVM [ 0.023711] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns [ 0.028274] setup_percpu: NR_CPUS:8192 nr_cpumask_bits:1 nr_cpu_ids:1 nr_node_ids:1 [ 0.028748] percpu: Embedded 55 pages/cpu s188376 r8192 d28712 u2097152 [ 0.028778] KVM setup async PF for cpu 0 [ 0.028784] kvm-stealtime: cpu 0, msr 13bc19580 [ 0.028791] Built 1 zonelists, mobility grouping on. Total pages: 1032041 [ 0.028793] Policy zone: Normal [ 0.028794] Kernel command line: console=ttyS0 root=/dev/sda nokaslr swiotlb=noforce [ 0.029720] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes, linear) [ 0.030154] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes, linear) [ 0.030188] mem auto-init: stack:off, heap alloc:off, heap free:off [ 0.037244] Memory: 4086692K/4193784K available (14339K kernel code, 2474K rwdata, 4860K rodata, 2408K init, 3324K bss, 107092K reserved, 0K cma-r) [ 0.037640] random: get_random_u64 called from cache_random_seq_create+0x74/0x120 with crng_init=0 [ 0.037687] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [ 0.037696] ftrace: allocating 43405 entries in 170 pages [ 0.050874] ftrace: allocated 170 pages with 4 groups [ 0.051295] rcu: Hierarchical RCU implementation. [ 0.051296] rcu: RCU restricting CPUs from NR_CPUS=8192 to nr_cpu_ids=1. [ 0.051297] Trampoline variant of Tasks RCU enabled. [ 0.051298] Rude variant of Tasks RCU enabled. [ 0.051299] Tracing variant of Tasks RCU enabled. [ 0.051299] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies. [ 0.051300] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1 [ 0.054124] NR_IRQS: 524544, nr_irqs: 256, preallocated irqs: 16 [ 0.061561] Console: colour VGA+ 80x25 [ 0.142370] printk: console [ttyS0] enabled [ 0.142809] ACPI: Core revision 20200326 [ 0.143320] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns [ 0.144321] APIC: Switch to symmetric I/O mode setup [ 0.144988] x2apic enabled [ 0.145454] Switched APIC routing to physical x2apic. [ 0.145969] KVM setup pv IPIs [ 0.147050] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 [ 0.147674] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x240937b9988, max_idle_ns: 440795218083 ns [ 0.148748] Calibrating delay loop (skipped) preset value.. 4999.99 BogoMIPS (lpj=9999992) [ 0.149579] pid_max: default: 32768 minimum: 301 [ 0.150058] LSM: Security Framework initializing [ 0.150536] Yama: becoming mindful. [ 0.150912] AppArmor: AppArmor initialized [ 0.151331] TOMOYO Linux initialized [ 0.151726] Mount-cache hash table entries: 8192 (order: 4, 65536 bytes, linear) [ 0.152754] Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes, linear) [ 0.153769] x86/cpu: User Mode Instruction Prevention (UMIP) activated [ 0.154479] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0 [ 0.155015] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0 [ 0.155619] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization [ 0.156469] Spectre V2 : Mitigation: Enhanced IBRS [ 0.156749] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch [ 0.157531] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier [ 0.158326] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl and seccomp [ 0.159236] TAA: Vulnerable: Clear CPU buffers attempted, no microcode [ 0.163546] Freeing SMP alternatives memory: 40K [ 0.165628] smpboot: CPU0: Intel(R) Xeon(R) Platinum 8269CY CPU @ 2.50GHz (family: 0x6, model: 0x55, stepping: 0x7) [ 0.166697] Performance Events: Skylake events, Intel PMU driver. [ 0.167301] ... version: 2 [ 0.167684] ... bit width: 48 [ 0.168081] ... generic registers: 4 [ 0.168466] ... value mask: 0000ffffffffffff [ 0.168746] ... max period: 000000007fffffff [ 0.168746] ... fixed-purpose events: 3 [ 0.168749] ... event mask: 000000070000000f [ 0.169286] rcu: Hierarchical SRCU implementation. [ 0.170873] smp: Bringing up secondary CPUs ... [ 0.171317] smp: Brought up 1 node, 1 CPU [ 0.171705] smpboot: Max logical packages: 1 [ 0.172117] smpboot: Total of 1 processors activated (4999.99 BogoMIPS) [ 0.172930] devtmpfs: initialized [ 0.173284] x86/mm: Memory block size: 128MB [ 0.173995] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns [ 0.174923] futex hash table entries: 256 (order: 2, 16384 bytes, linear) [ 0.175607] pinctrl core: initialized pinctrl subsystem [ 0.176208] PM: RTC time: 10:00:50, date: 2020-05-14 [ 0.176688] thermal_sys: Registered thermal governor 'fair_share' [ 0.176689] thermal_sys: Registered thermal governor 'bang_bang' [ 0.176753] thermal_sys: Registered thermal governor 'step_wise' [ 0.177332] thermal_sys: Registered thermal governor 'user_space' [ 0.177982] NET: Registered protocol family 16 [ 0.179042] audit: initializing netlink subsys (disabled) [ 0.179577] audit: type=2000 audit(1589450451.021:1): state=initialized audit_enabled=0 res=1 [ 0.180450] cpuidle: using governor ladder [ 0.180753] cpuidle: using governor menu [ 0.181162] ACPI: bus type PCI registered [ 0.181548] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 [ 0.182236] PCI: Using configuration type 1 for base access [ 0.183818] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages [ 0.184470] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 0.185279] ACPI: Added _OSI(Module Device) [ 0.185693] ACPI: Added _OSI(Processor Device) [ 0.186119] ACPI: Added _OSI(3.0 _SCP Extensions) [ 0.186572] ACPI: Added _OSI(Processor Aggregator Device) [ 0.187089] ACPI: Added _OSI(Linux-Dell-Video) [ 0.187516] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio) [ 0.188027] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics) [ 0.189526] ACPI: 1 ACPI AML tables successfully acquired and loaded [ 0.190963] ACPI: Interpreter enabled [ 0.191333] ACPI: (supports S0 S3 S4 S5) [ 0.191716] ACPI: Using IOAPIC for interrupt routing [ 0.192199] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 0.192891] ACPI: Enabled 3 GPEs in block 00 to 0F [ 0.196692] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 0.196758] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI HPX-Type3] [ 0.197500] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge. [ 0.199151] acpiphp: Slot [3] registered [ 0.199546] acpiphp: Slot [4] registered [ 0.199941] acpiphp: Slot [5] registered [ 0.200333] acpiphp: Slot [6] registered [ 0.200729] acpiphp: Slot [7] registered [ 0.200770] acpiphp: Slot [8] registered [ 0.201160] acpiphp: Slot [9] registered [ 0.201555] acpiphp: Slot [10] registered [ 0.201952] acpiphp: Slot [11] registered [ 0.202353] acpiphp: Slot [12] registered [ 0.202750] acpiphp: Slot [13] registered [ 0.203151] acpiphp: Slot [14] registered [ 0.203553] acpiphp: Slot [15] registered [ 0.203952] acpiphp: Slot [16] registered [ 0.204355] acpiphp: Slot [17] registered [ 0.204756] acpiphp: Slot [18] registered [ 0.205155] acpiphp: Slot [19] registered [ 0.205559] acpiphp: Slot [20] registered [ 0.205956] acpiphp: Slot [21] registered [ 0.206358] acpiphp: Slot [22] registered [ 0.206756] acpiphp: Slot [23] registered [ 0.207154] acpiphp: Slot [24] registered [ 0.207557] acpiphp: Slot [25] registered [ 0.207957] acpiphp: Slot [26] registered [ 0.208360] acpiphp: Slot [27] registered [ 0.208756] acpiphp: Slot [28] registered [ 0.209154] acpiphp: Slot [29] registered [ 0.209558] acpiphp: Slot [30] registered [ 0.209955] acpiphp: Slot [31] registered [ 0.210351] PCI host bridge to bus 0000:00 [ 0.210742] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 0.211390] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] [ 0.212033] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] [ 0.212745] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfffff window] [ 0.212749] pci_bus 0000:00: root bus resource [mem 0x400000000-0x47fffffff window] [ 0.213475] pci_bus 0000:00: root bus resource [bus 00-ff] [ 0.214026] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 [ 0.214916] pci 0000:00:01.0: [8086:7000] type 00 class 0x060100 [ 0.215901] pci 0000:00:01.1: [8086:7010] type 00 class 0x010180 [ 0.218196] pci 0000:00:01.1: reg 0x20: [io 0xc040-0xc04f] [ 0.219476] pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io 0x01f0-0x01f7] [ 0.220155] pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io 0x03f6] [ 0.220750] pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io 0x0170-0x0177] [ 0.221430] pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io 0x0376] [ 0.222181] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 [ 0.223058] pci 0000:00:01.3: quirk: [io 0x0600-0x063f] claimed by PIIX4 ACPI [ 0.223752] pci 0000:00:01.3: quirk: [io 0x0700-0x070f] claimed by PIIX4 SMB [ 0.224604] pci 0000:00:02.0: [1234:1111] type 00 class 0x030000 [ 0.225627] pci 0000:00:02.0: reg 0x10: [mem 0xfd000000-0xfdffffff pref] [ 0.227840] pci 0000:00:02.0: reg 0x18: [mem 0xfebf0000-0xfebf0fff] [ 0.230963] pci 0000:00:02.0: reg 0x30: [mem 0xfebe0000-0xfebeffff pref] [ 0.231766] pci 0000:00:03.0: [8086:100e] type 00 class 0x020000 [ 0.233184] pci 0000:00:03.0: reg 0x10: [mem 0xfebc0000-0xfebdffff] [ 0.234628] pci 0000:00:03.0: reg 0x14: [io 0xc000-0xc03f] [ 0.239497] pci 0000:00:03.0: reg 0x30: [mem 0xfeb80000-0xfebbffff pref] [ 0.240716] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11) [ 0.240833] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11) [ 0.241449] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11) [ 0.242063] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11) [ 0.242642] ACPI: PCI Interrupt Link [LNKS] (IRQs *9) [ 0.243547] iommu: Default domain type: Translated [ 0.244050] pci 0000:00:02.0: vgaarb: setting as boot VGA device [ 0.244631] pci 0000:00:02.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none [ 0.244750] pci 0000:00:02.0: vgaarb: bridge control possible [ 0.245300] vgaarb: loaded [ 0.245684] SCSI subsystem initialized [ 0.246080] ACPI: bus type USB registered [ 0.246485] usbcore: registered new interface driver usbfs [ 0.247015] usbcore: registered new interface driver hub [ 0.247532] usbcore: registered new device driver usb [ 0.248053] EDAC MC: Ver: 3.0.0 [ 0.248488] PCI: Using ACPI for IRQ routing [ 0.248889] NetLabel: Initializing [ 0.249220] NetLabel: domain hash size = 128 [ 0.249642] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 0.250192] NetLabel: unlabeled traffic allowed by default [ 0.250793] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 [ 0.251268] hpet0: 3 comparators, 64-bit 100.000000 MHz counter [ 0.255814] clocksource: Switched to clocksource kvm-clock [ 0.263083] VFS: Disk quotas dquot_6.6.0 [ 0.263479] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 0.264215] AppArmor: AppArmor Filesystem Enabled [ 0.264683] pnp: PnP ACPI init [ 0.265570] pnp: PnP ACPI: found 6 devices [ 0.271088] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 0.271958] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window] [ 0.272551] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window] [ 0.273150] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window] [ 0.273805] pci_bus 0000:00: resource 7 [mem 0xc0000000-0xfebfffff window] [ 0.274463] pci_bus 0000:00: resource 8 [mem 0x400000000-0x47fffffff window] [ 0.275178] NET: Registered protocol family 2 [ 0.275726] tcp_listen_portaddr_hash hash table entries: 2048 (order: 3, 32768 bytes, linear) [ 0.276548] TCP established hash table entries: 32768 (order: 6, 262144 bytes, linear) [ 0.277341] TCP bind hash table entries: 32768 (order: 7, 524288 bytes, linear) [ 0.278089] TCP: Hash tables configured (established 32768 bind 32768) [ 0.279086] UDP hash table entries: 2048 (order: 4, 65536 bytes, linear) [ 0.279734] UDP-Lite hash table entries: 2048 (order: 4, 65536 bytes, linear) [ 0.280450] NET: Registered protocol family 1 [ 0.280896] pci 0000:00:01.0: PIIX3: Enabling Passive Release [ 0.281455] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 0.282028] pci 0000:00:01.0: Activating ISA DMA hang workarounds [ 0.282652] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff] [ 0.283463] PCI: CLS 0 bytes, default 64 [ 0.283865] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 0.284483] software IO TLB: mapped [mem 0xbffdf000-0xbffdf800] (0MB) [ 0.285199] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x240937b9988, max_idle_ns: 440795218083 ns [ 0.286167] check: Scanning for low memory corruption every 60 seconds [ 0.286998] Initialise system trusted keyrings [ 0.287462] workingset: timestamp_bits=36 max_order=20 bucket_order=0 [ 0.288814] zbud: loaded [ 0.289224] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 0.289871] fuse: init (API version 7.31) [ 0.297407] Key type asymmetric registered [ 0.297815] Asymmetric key parser 'x509' registered [ 0.298289] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 247) [ 0.299015] io scheduler mq-deadline registered [ 0.299548] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 [ 0.300278] ACPI: Power Button [PWRF] [ 0.300786] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled [ 0.301606] 00:05: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 0.302840] Linux agpgart interface v0.103 [ 0.304481] loop: module loaded [ 0.305665] scsi host0: ata_piix [ 0.306042] scsi host1: ata_piix [ 0.306385] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc040 irq 14 [ 0.307031] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc048 irq 15 [ 0.307930] libphy: Fixed MDIO Bus: probed [ 0.308331] tun: Universal TUN/TAP device driver, 1.6 [ 0.308847] PPP generic driver version 2.4.2 [ 0.309281] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 0.309907] ehci-pci: EHCI PCI platform driver [ 0.310340] ehci-platform: EHCI generic platform driver [ 0.310846] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 0.311437] ohci-pci: OHCI PCI platform driver [ 0.311869] ohci-platform: OHCI generic platform driver [ 0.312375] uhci_hcd: USB Universal Host Controller Interface driver [ 0.313181] i8042: PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12 [ 0.314458] serio: i8042 KBD port at 0x60,0x64 irq 1 [ 0.314934] serio: i8042 AUX port at 0x60,0x64 irq 12 [ 0.315476] mousedev: PS/2 mouse device common for all mice [ 0.316182] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input1 [ 0.317177] rtc_cmos 00:00: RTC can wake from S4 [ 0.317895] rtc_cmos 00:00: registered as rtc0 [ 0.318368] rtc_cmos 00:00: setting system clock to 2020-05-14T10:00:50 UTC (1589450450) [ 0.319151] rtc_cmos 00:00: alarms up to one day, y3k, 114 bytes nvram, hpet irqs [ 0.319867] i2c /dev entries driver [ 0.320229] device-mapper: uevent: version 1.0.3 [ 0.320704] device-mapper: ioctl: 4.42.0-ioctl (2020-02-27) initialised: dm-devel@redhat.com [ 0.321515] intel_pstate: CPU model not supported [ 0.321972] ledtrig-cpu: registered to indicate activity on CPUs [ 0.322567] drop_monitor: Initializing network drop monitor service [ 0.323263] NET: Registered protocol family 10 [ 0.323814] Segment Routing with IPv6 [ 0.324183] NET: Registered protocol family 17 [ 0.324631] Key type dns_resolver registered [ 0.325105] IPI shorthand broadcast: enabled [ 0.325522] sched_clock: Marking stable (238560739, 86481164)->(334226795, -9184892) [ 0.326296] registered taskstats version 1 [ 0.326696] Loading compiled-in X.509 certificates [ 0.328051] Loaded X.509 cert 'Build time autogenerated kernel key: bd0fe972797988f0782b694de4de56b1ff6c4bc3' [ 0.329022] zswap: loaded using pool lzo/zbud [ 0.329489] Key type ._fscrypt registered [ 0.329877] Key type .fscrypt registered [ 0.330259] Key type fscrypt-provisioning registered [ 0.330851] Key type big_key registered [ 0.331274] Key type encrypted registered [ 0.331662] AppArmor: AppArmor sha1 policy hashing enabled [ 0.332190] ima: No TPM chip found, activating TPM-bypass! [ 0.332716] ima: Allocated hash algorithm: sha1 [ 0.333171] ima: No architecture policies found [ 0.333646] evm: Initialising EVM extended attributes: [ 0.334144] evm: security.selinux [ 0.334463] evm: security.SMACK64 [ 0.334782] evm: security.SMACK64EXEC [ 0.335138] evm: security.SMACK64TRANSMUTE [ 0.335531] evm: security.SMACK64MMAP [ 0.335884] evm: security.apparmor [ 0.336215] evm: security.ima [ 0.336504] evm: security.capability [ 0.336855] evm: HMAC attrs: 0x1 [ 0.337354] PM: Magic number: 4:67:22 [ 0.473227] ata2.00: ATA-7: QEMU HARDDISK, 2.5+, max UDMA/100 [ 0.473785] ata2.00: 524288 sectors, multi 16: LBA48 [ 0.474659] scsi 1:0:0:0: Direct-Access ATA QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5 [ 0.475536] sd 1:0:0:0: [sda] 524288 512-byte logical blocks: (268 MB/256 MiB) [ 0.476237] sd 1:0:0:0: [sda] Write Protect is off [ 0.476704] sd 1:0:0:0: Attached scsi generic sg0 type 0 [ 0.477239] sd 1:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 0.478205] ------------[ cut here ]------------ [ 0.478652] ata_piix 0000:00:01.1: DMA addr 0x0000000139e4f000+4096 overflow (mask ffffffff, bus limit 0). [ 0.479580] WARNING: CPU: 0 PID: 6 at /home/teawater/kernel/linux2/kernel/dma/direct.c:400 dma_direct_map_page+0x118/0x130 [ 0.480630] Modules linked in: [ 0.480933] CPU: 0 PID: 6 Comm: kworker/0:0H Not tainted 5.7.0-rc4-next-20200507+ #10 [ 0.481681] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 [ 0.482770] Workqueue: kblockd blk_mq_run_work_fn [ 0.483230] RIP: 0010:dma_direct_map_page+0x118/0x130 [ 0.483715] Code: 8b 1f e8 6b 48 5b 00 48 8d 4c 24 08 48 89 c6 4c 89 2c 24 4d 89 e1 49 89 e8 48 89 da 48 c7 c7 48 e4 34 82 31 c0 e8 18 77 f7 ff <00 [ 0.485484] RSP: 0000:ffffc9000003bbe8 EFLAGS: 00010082 [ 0.485984] RAX: 0000000000000000 RBX: ffff88813b3db310 RCX: ffffffff82667968 [ 0.486663] RDX: 0000000000000001 RSI: 0000000000000096 RDI: 0000000000000046 [ 0.487342] RBP: 0000000000001000 R08: 00000000000001bb R09: 00000000000001bb [ 0.488017] R10: 0000000000000000 R11: ffffc9000003b958 R12: 00000000ffffffff [ 0.488699] R13: 0000000000000000 R14: 0000000000000000 R15: ffff888139e272a8 [ 0.489379] FS: 0000000000000000(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 [ 0.490148] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.490698] CR2: 0000000000000000 CR3: 000000000260a001 CR4: 0000000000360ef0 [ 0.491377] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 0.492057] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 0.492736] Call Trace: [ 0.492985] dma_direct_map_sg+0x64/0xb0 [ 0.493369] ? ata_scsi_write_same_xlat+0x350/0x350 [ 0.493837] ata_qc_issue+0x214/0x260 [ 0.494199] ? ata_scsi_write_same_xlat+0x350/0x350 [ 0.494665] __ata_scsi_queuecmd+0x190/0x410 [ 0.495077] ata_scsi_queuecmd+0x40/0x80 [ 0.495455] scsi_queue_rq+0x697/0xa90 [ 0.495819] blk_mq_dispatch_rq_list+0x90/0x590 [ 0.496259] ? elv_rb_del+0x1f/0x30 [ 0.496597] ? deadline_remove_request+0x6a/0xb0 [ 0.497042] blk_mq_do_dispatch_sched+0xe9/0x130 [ 0.497488] __blk_mq_sched_dispatch_requests+0xd8/0x160 [ 0.497996] blk_mq_sched_dispatch_requests+0x30/0x60 [ 0.498483] __blk_mq_run_hw_queue+0x7e/0x130 [ 0.498904] process_one_work+0x166/0x370 [ 0.499296] worker_thread+0x49/0x3e0 [ 0.499650] kthread+0xf8/0x130 [ 0.499957] ? max_active_store+0x80/0x80 [ 0.500347] ? kthread_bind+0x10/0x10 [ 0.500701] ret_from_fork+0x1f/0x30 [ 0.501048] ---[ end trace cfd92832ca2f7781 ]--- [ 0.524773] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.525404] ata2.00: failed command: READ DMA [ 0.525824] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.525824] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.527275] ata2.00: status: { DRDY } [ 0.528160] ata2.00: configured for MWDMA2 [ 0.528558] ata2: EH complete [ 0.540770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.541399] ata2.00: failed command: READ DMA [ 0.541818] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.541818] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.543265] ata2.00: status: { DRDY } [ 0.544129] ata2.00: configured for MWDMA2 [ 0.544525] ata2: EH complete [ 0.556771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.557389] ata2.00: failed command: READ DMA [ 0.557810] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.557810] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.559255] ata2.00: status: { DRDY } [ 0.560115] ata2.00: configured for MWDMA2 [ 0.560509] ata2: EH complete [ 0.572770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.573398] ata2.00: failed command: READ DMA [ 0.573818] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.573818] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.575264] ata2.00: status: { DRDY } [ 0.576125] ata2.00: configured for MWDMA2 [ 0.576522] ata2: EH complete [ 0.588772] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.589409] ata2.00: failed command: READ DMA [ 0.589831] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.589831] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.591275] ata2.00: status: { DRDY } [ 0.592136] ata2.00: configured for MWDMA2 [ 0.592532] ata2: EH complete [ 0.604771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.605400] ata2.00: failed command: READ DMA [ 0.605821] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.605821] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.607273] ata2.00: status: { DRDY } [ 0.608135] ata2.00: configured for MWDMA2 [ 0.608535] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s [ 0.609415] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] [ 0.610074] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command [ 0.610703] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 0.611402] blk_update_request: I/O error, dev sda, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 0.612336] Buffer I/O error on dev sda, logical block 0, async page read [ 0.612987] ata2: EH complete [ 0.636771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.637389] ata2.00: failed command: READ DMA [ 0.637808] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.637808] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.639254] ata2.00: status: { DRDY } [ 0.640112] ata2.00: configured for MWDMA2 [ 0.640511] ata2: EH complete [ 0.652772] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.653398] ata2.00: failed command: READ DMA [ 0.653818] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.653818] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.655267] ata2.00: status: { DRDY } [ 0.656126] ata2.00: configured for MWDMA2 [ 0.656523] ata2: EH complete [ 0.668771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.669396] ata2.00: failed command: READ DMA [ 0.669815] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.669815] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.671264] ata2.00: status: { DRDY } [ 0.672124] ata2.00: configured for MWDMA2 [ 0.672521] ata2: EH complete [ 0.684770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.685390] ata2.00: failed command: READ DMA [ 0.685807] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.685807] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.687252] ata2.00: status: { DRDY } [ 0.688109] ata2.00: configured for MWDMA2 [ 0.688506] ata2: EH complete [ 0.700769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.701388] ata2.00: failed command: READ DMA [ 0.701805] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.701805] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.703249] ata2.00: status: { DRDY } [ 0.704107] ata2.00: configured for MWDMA2 [ 0.704502] ata2: EH complete [ 0.716769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.717389] ata2.00: failed command: READ DMA [ 0.717806] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.717806] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.719251] ata2.00: status: { DRDY } [ 0.720110] ata2.00: configured for MWDMA2 [ 0.720507] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s [ 0.721389] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] [ 0.722042] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command [ 0.722676] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 0.723374] blk_update_request: I/O error, dev sda, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 0.724308] Buffer I/O error on dev sda, logical block 0, async page read [ 0.724959] ata2: EH complete [ 0.748770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.749390] ata2.00: failed command: READ DMA [ 0.749810] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.749810] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.751271] ata2.00: status: { DRDY } [ 0.752134] ata2.00: configured for MWDMA2 [ 0.752533] ata2: EH complete [ 0.764771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.765388] ata2.00: failed command: READ DMA [ 0.765809] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.765809] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.767257] ata2.00: status: { DRDY } [ 0.768115] ata2.00: configured for MWDMA2 [ 0.768511] ata2: EH complete [ 0.780773] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.781390] ata2.00: failed command: READ DMA [ 0.781813] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.781813] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.783263] ata2.00: status: { DRDY } [ 0.784123] ata2.00: configured for MWDMA2 [ 0.784520] ata2: EH complete [ 0.796771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.797394] ata2.00: failed command: READ DMA [ 0.797814] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.797814] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.799262] ata2.00: status: { DRDY } [ 0.800122] ata2.00: configured for MWDMA2 [ 0.800519] ata2: EH complete [ 0.812770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.813395] ata2.00: failed command: READ DMA [ 0.813815] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.813815] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.815263] ata2.00: status: { DRDY } [ 0.816121] ata2.00: configured for MWDMA2 [ 0.816517] ata2: EH complete [ 0.828770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.829395] ata2.00: failed command: READ DMA [ 0.829814] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.829814] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.831267] ata2.00: status: { DRDY } [ 0.832126] ata2.00: configured for MWDMA2 [ 0.832524] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s [ 0.833403] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] [ 0.834060] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command [ 0.834692] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 0.835389] blk_update_request: I/O error, dev sda, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 0.836319] Buffer I/O error on dev sda, logical block 0, async page read [ 0.836970] ata2: EH complete [ 0.837267] ldm_validate_partition_table(): Disk read failed. [ 0.860772] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.861401] ata2.00: failed command: READ DMA [ 0.861822] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.861822] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.863269] ata2.00: status: { DRDY } [ 0.864132] ata2.00: configured for MWDMA2 [ 0.864528] ata2: EH complete [ 0.876771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.877397] ata2.00: failed command: READ DMA [ 0.877817] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.877817] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.879266] ata2.00: status: { DRDY } [ 0.880127] ata2.00: configured for MWDMA2 [ 0.880524] ata2: EH complete [ 0.892773] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.893399] ata2.00: failed command: READ DMA [ 0.893820] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.893820] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.895273] ata2.00: status: { DRDY } [ 0.896133] ata2.00: configured for MWDMA2 [ 0.896531] ata2: EH complete [ 0.908770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.909394] ata2.00: failed command: READ DMA [ 0.909814] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.909814] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.911257] ata2.00: status: { DRDY } [ 0.912116] ata2.00: configured for MWDMA2 [ 0.912512] ata2: EH complete [ 0.924770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.925398] ata2.00: failed command: READ DMA [ 0.925817] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.925817] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.927261] ata2.00: status: { DRDY } [ 0.928118] ata2.00: configured for MWDMA2 [ 0.928515] ata2: EH complete [ 0.940771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.941387] ata2.00: failed command: READ DMA [ 0.941805] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.941805] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.943250] ata2.00: status: { DRDY } [ 0.944108] ata2.00: configured for MWDMA2 [ 0.944505] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s [ 0.945382] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] [ 0.946039] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command [ 0.946671] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 0.947370] blk_update_request: I/O error, dev sda, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 0.948302] Buffer I/O error on dev sda, logical block 0, async page read [ 0.948956] ata2: EH complete [ 0.972774] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.973395] ata2.00: failed command: READ DMA [ 0.973812] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.973812] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.975262] ata2.00: status: { DRDY } [ 0.976126] ata2.00: configured for MWDMA2 [ 0.976524] ata2: EH complete [ 0.988770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 0.989396] ata2.00: failed command: READ DMA [ 0.989815] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 0.989815] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 0.991257] ata2.00: status: { DRDY } [ 0.992117] ata2.00: configured for MWDMA2 [ 0.992511] ata2: EH complete [ 1.004769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.005398] ata2.00: failed command: READ DMA [ 1.005818] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.005818] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.007261] ata2.00: status: { DRDY } [ 1.008122] ata2.00: configured for MWDMA2 [ 1.008518] ata2: EH complete [ 1.020770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.021398] ata2.00: failed command: READ DMA [ 1.021819] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.021819] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.023262] ata2.00: status: { DRDY } [ 1.024123] ata2.00: configured for MWDMA2 [ 1.024519] ata2: EH complete [ 1.036771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.037396] ata2.00: failed command: READ DMA [ 1.037816] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.037816] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.039262] ata2.00: status: { DRDY } [ 1.040120] ata2.00: configured for MWDMA2 [ 1.040515] ata2: EH complete [ 1.052772] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.053397] ata2.00: failed command: READ DMA [ 1.053818] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.053818] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.055264] ata2.00: status: { DRDY } [ 1.056125] ata2.00: configured for MWDMA2 [ 1.056525] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s [ 1.057404] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] [ 1.058066] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command [ 1.058695] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 1.059393] blk_update_request: I/O error, dev sda, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 1.060325] Buffer I/O error on dev sda, logical block 0, async page read [ 1.060973] ata2: EH complete [ 1.084771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.085395] ata2.00: failed command: READ DMA [ 1.085814] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.085814] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.087259] ata2.00: status: { DRDY } [ 1.088119] ata2.00: configured for MWDMA2 [ 1.088514] ata2: EH complete [ 1.100770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.101395] ata2.00: failed command: READ DMA [ 1.101814] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.101814] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.103259] ata2.00: status: { DRDY } [ 1.104118] ata2.00: configured for MWDMA2 [ 1.104515] ata2: EH complete [ 1.116769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.117388] ata2.00: failed command: READ DMA [ 1.117805] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.117805] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.119248] ata2.00: status: { DRDY } [ 1.120106] ata2.00: configured for MWDMA2 [ 1.120503] ata2: EH complete [ 1.132770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.133390] ata2.00: failed command: READ DMA [ 1.133807] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.133807] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.135253] ata2.00: status: { DRDY } [ 1.136113] ata2.00: configured for MWDMA2 [ 1.136509] ata2: EH complete [ 1.148770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.149389] ata2.00: failed command: READ DMA [ 1.149806] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.149806] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.151248] ata2.00: status: { DRDY } [ 1.152108] ata2.00: configured for MWDMA2 [ 1.152503] ata2: EH complete [ 1.164770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.165395] ata2.00: failed command: READ DMA [ 1.165814] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.165814] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.167258] ata2.00: status: { DRDY } [ 1.168119] ata2.00: configured for MWDMA2 [ 1.168515] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s [ 1.169397] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] [ 1.170054] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command [ 1.170685] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 1.171382] blk_update_request: I/O error, dev sda, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 1.172315] Buffer I/O error on dev sda, logical block 0, async page read [ 1.172965] ata2: EH complete [ 1.196770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.197391] ata2.00: failed command: READ DMA [ 1.197811] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.197811] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.199265] ata2.00: status: { DRDY } [ 1.200128] ata2.00: configured for MWDMA2 [ 1.200525] ata2: EH complete [ 1.212770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.213389] ata2.00: failed command: READ DMA [ 1.213809] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.213809] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.215253] ata2.00: status: { DRDY } [ 1.216114] ata2.00: configured for MWDMA2 [ 1.216510] ata2: EH complete [ 1.228773] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.229398] ata2.00: failed command: READ DMA [ 1.229819] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.229819] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.231273] ata2.00: status: { DRDY } [ 1.232132] ata2.00: configured for MWDMA2 [ 1.232528] ata2: EH complete [ 1.244773] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.245399] ata2.00: failed command: READ DMA [ 1.245821] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.245821] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.247269] ata2.00: status: { DRDY } [ 1.248128] ata2.00: configured for MWDMA2 [ 1.248525] ata2: EH complete [ 1.260770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.261391] ata2.00: failed command: READ DMA [ 1.261813] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.261813] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.263263] ata2.00: status: { DRDY } [ 1.264124] ata2.00: configured for MWDMA2 [ 1.264520] ata2: EH complete [ 1.276771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.277389] ata2.00: failed command: READ DMA [ 1.277809] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.277809] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.279253] ata2.00: status: { DRDY } [ 1.280112] ata2.00: configured for MWDMA2 [ 1.280510] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s [ 1.281385] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] [ 1.282040] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command [ 1.282672] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 1.283371] blk_update_request: I/O error, dev sda, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 1.284305] Buffer I/O error on dev sda, logical block 0, async page read [ 1.284960] ata2: EH complete [ 1.285254] Dev sda: unable to read RDB block 0 [ 1.308770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.309404] ata2.00: failed command: READ DMA [ 1.309825] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.309825] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.311278] ata2.00: status: { DRDY } [ 1.312142] ata2.00: configured for MWDMA2 [ 1.312538] ata2: EH complete [ 1.324770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.325398] ata2.00: failed command: READ DMA [ 1.325817] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.325817] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.327269] ata2.00: status: { DRDY } [ 1.328127] ata2.00: configured for MWDMA2 [ 1.328520] ata2: EH complete [ 1.340770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.341396] ata2.00: failed command: READ DMA [ 1.341813] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.341813] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.343258] ata2.00: status: { DRDY } [ 1.344120] ata2.00: configured for MWDMA2 [ 1.344515] ata2: EH complete [ 1.356771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.357396] ata2.00: failed command: READ DMA [ 1.357815] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.357815] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.359258] ata2.00: status: { DRDY } [ 1.360118] ata2.00: configured for MWDMA2 [ 1.360514] ata2: EH complete [ 1.372772] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.373399] ata2.00: failed command: READ DMA [ 1.373822] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.373822] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.375275] ata2.00: status: { DRDY } [ 1.376135] ata2.00: configured for MWDMA2 [ 1.376533] ata2: EH complete [ 1.388773] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.389397] ata2.00: failed command: READ DMA [ 1.389817] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.389817] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.391263] ata2.00: status: { DRDY } [ 1.392122] ata2.00: configured for MWDMA2 [ 1.392522] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s [ 1.393400] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] [ 1.394057] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command [ 1.394687] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 1.395388] blk_update_request: I/O error, dev sda, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 1.396323] Buffer I/O error on dev sda, logical block 0, async page read [ 1.396975] ata2: EH complete [ 1.420771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.421400] ata2.00: failed command: READ DMA [ 1.421819] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.421819] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.423267] ata2.00: status: { DRDY } [ 1.424124] ata2.00: configured for MWDMA2 [ 1.424521] ata2: EH complete [ 1.436771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.437395] ata2.00: failed command: READ DMA [ 1.437813] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.437813] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.439261] ata2.00: status: { DRDY } [ 1.440120] ata2.00: configured for MWDMA2 [ 1.440516] ata2: EH complete [ 1.452770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.453399] ata2.00: failed command: READ DMA [ 1.453816] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.453816] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.455259] ata2.00: status: { DRDY } [ 1.456116] ata2.00: configured for MWDMA2 [ 1.456512] ata2: EH complete [ 1.468769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.469387] ata2.00: failed command: READ DMA [ 1.469802] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.469802] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.471246] ata2.00: status: { DRDY } [ 1.472105] ata2.00: configured for MWDMA2 [ 1.472501] ata2: EH complete [ 1.484769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.485403] ata2.00: failed command: READ DMA [ 1.485822] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.485822] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.487269] ata2.00: status: { DRDY } [ 1.488128] ata2.00: configured for MWDMA2 [ 1.488524] ata2: EH complete [ 1.500770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.501389] ata2.00: failed command: READ DMA [ 1.501807] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.501807] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.503252] ata2.00: status: { DRDY } [ 1.504114] ata2.00: configured for MWDMA2 [ 1.504512] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s [ 1.505395] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] [ 1.506054] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command [ 1.506685] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 [ 1.507383] blk_update_request: I/O error, dev sda, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 1.508319] Buffer I/O error on dev sda, logical block 0, async page read [ 1.508972] ata2: EH complete [ 1.532770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.533402] ata2.00: failed command: READ DMA [ 1.533825] ata2.00: cmd c8/00:08:18:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.533825] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.535282] ata2.00: status: { DRDY } [ 1.536143] ata2.00: configured for MWDMA2 [ 1.536542] ata2: EH complete [ 1.548771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.549394] ata2.00: failed command: READ DMA [ 1.549817] ata2.00: cmd c8/00:08:18:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.549817] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.551272] ata2.00: status: { DRDY } [ 1.552132] ata2.00: configured for MWDMA2 [ 1.552530] ata2: EH complete [ 1.564771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.565392] ata2.00: failed command: READ DMA [ 1.565814] ata2.00: cmd c8/00:08:18:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.565814] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.567271] ata2.00: status: { DRDY } [ 1.568129] ata2.00: configured for MWDMA2 [ 1.568530] ata2: EH complete [ 1.580769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.581390] ata2.00: failed command: READ DMA [ 1.581812] ata2.00: cmd c8/00:08:18:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.581812] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.583257] ata2.00: status: { DRDY } [ 1.584114] ata2.00: configured for MWDMA2 [ 1.584510] ata2: EH complete [ 1.596770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.597389] ata2.00: failed command: READ DMA [ 1.597809] ata2.00: cmd c8/00:08:18:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.597809] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.599260] ata2.00: status: { DRDY } [ 1.600119] ata2.00: configured for MWDMA2 [ 1.600515] ata2: EH complete [ 1.612770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.613394] ata2.00: failed command: READ DMA [ 1.613814] ata2.00: cmd c8/00:08:18:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.613814] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.615276] ata2.00: status: { DRDY } [ 1.616139] ata2.00: configured for MWDMA2 [ 1.616539] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s [ 1.617421] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] [ 1.618081] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command [ 1.618714] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 00 18 00 00 08 00 [ 1.619418] blk_update_request: I/O error, dev sda, sector 24 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 1.620369] Buffer I/O error on dev sda, logical block 3, async page read [ 1.621028] ata2: EH complete [ 1.644770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.645397] ata2.00: failed command: READ DMA [ 1.645819] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.645819] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.647272] ata2.00: status: { DRDY } [ 1.648136] ata2.00: configured for MWDMA2 [ 1.648536] ata2: EH complete [ 1.660769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.661389] ata2.00: failed command: READ DMA [ 1.661809] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.661809] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.663260] ata2.00: status: { DRDY } [ 1.664119] ata2.00: configured for MWDMA2 [ 1.664516] ata2: EH complete [ 1.676770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.677393] ata2.00: failed command: READ DMA [ 1.677812] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.677812] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.679262] ata2.00: status: { DRDY } [ 1.680120] ata2.00: configured for MWDMA2 [ 1.680517] ata2: EH complete [ 1.692769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.693390] ata2.00: failed command: READ DMA [ 1.693810] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.693810] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.695265] ata2.00: status: { DRDY } [ 1.696128] ata2.00: configured for MWDMA2 [ 1.696526] ata2: EH complete [ 1.708769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.709395] ata2.00: failed command: READ DMA [ 1.709817] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.709817] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.711277] ata2.00: status: { DRDY } [ 1.712138] ata2.00: configured for MWDMA2 [ 1.712535] ata2: EH complete [ 1.724769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.725393] ata2.00: failed command: READ DMA [ 1.725814] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.725814] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.727265] ata2.00: status: { DRDY } [ 1.728125] ata2.00: configured for MWDMA2 [ 1.728525] ata2: EH complete [ 1.752770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.753396] ata2.00: failed command: READ DMA [ 1.753815] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.753815] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.755272] ata2.00: status: { DRDY } [ 1.756130] ata2.00: configured for MWDMA2 [ 1.756525] ata2: EH complete [ 1.768769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.769386] ata2.00: failed command: READ DMA [ 1.769803] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.769803] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.771250] ata2.00: status: { DRDY } [ 1.772108] ata2.00: configured for MWDMA2 [ 1.772503] ata2: EH complete [ 1.784769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.785390] ata2.00: failed command: READ DMA [ 1.785812] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.785812] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.787264] ata2.00: status: { DRDY } [ 1.788127] ata2.00: configured for MWDMA2 [ 1.788525] ata2: EH complete [ 1.800769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.801392] ata2.00: failed command: READ DMA [ 1.801813] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.801813] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.803264] ata2.00: status: { DRDY } [ 1.804126] ata2.00: configured for MWDMA2 [ 1.804522] ata2: EH complete [ 1.816770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.817391] ata2.00: failed command: READ DMA [ 1.817813] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.817813] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.819264] ata2.00: status: { DRDY } [ 1.820126] ata2.00: configured for MWDMA2 [ 1.820523] ata2: EH complete [ 1.832773] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.833398] ata2.00: failed command: READ DMA [ 1.833819] ata2.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 1.833819] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.835275] ata2.00: status: { DRDY } [ 1.836136] ata2.00: configured for MWDMA2 [ 1.836537] ata2: EH complete [ 1.836833] sda: unable to read partition table [ 1.837393] sd 1:0:0:0: [sda] Attached SCSI disk [ 1.837855] md: Waiting for all devices to be available before autodetect [ 1.838510] md: If you don't use raid, use raid=noautodetect [ 1.839152] sda: detected capacity change from 0 to 268435456 [ 1.839759] sda: detected capacity change from 0 to 268435456 [ 1.840346] md: Autodetecting RAID arrays. [ 1.840741] md: autorun ... [ 1.841018] md: ... autorun DONE. [ 1.864774] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.865398] ata2.00: failed command: READ DMA [ 1.865821] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 1.865821] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.867274] ata2.00: status: { DRDY } [ 1.868146] ata2.00: configured for MWDMA2 [ 1.868546] ata2: EH complete [ 1.880772] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.881393] ata2.00: failed command: READ DMA [ 1.881816] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 1.881816] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.883269] ata2.00: status: { DRDY } [ 1.884130] ata2.00: configured for MWDMA2 [ 1.884531] ata2: EH complete [ 1.896771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.897392] ata2.00: failed command: READ DMA [ 1.897816] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 1.897816] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.899265] ata2.00: status: { DRDY } [ 1.900125] ata2.00: configured for MWDMA2 [ 1.900524] ata2: EH complete [ 1.912771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.913395] ata2.00: failed command: READ DMA [ 1.913821] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 1.913821] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.915281] ata2.00: status: { DRDY } [ 1.916144] ata2.00: configured for MWDMA2 [ 1.916544] ata2: EH complete [ 1.928769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.929392] ata2.00: failed command: READ DMA [ 1.929814] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 1.929814] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.931269] ata2.00: status: { DRDY } [ 1.932129] ata2.00: configured for MWDMA2 [ 1.932529] ata2: EH complete [ 1.944769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.945402] ata2.00: failed command: READ DMA [ 1.945826] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 1.945826] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.947295] ata2.00: status: { DRDY } [ 1.948156] ata2.00: configured for MWDMA2 [ 1.948561] ata2: EH complete [ 1.948860] EXT4-fs (sda): unable to read superblock [ 1.972772] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.973397] ata2.00: failed command: READ DMA [ 1.973819] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 1.973819] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.975278] ata2.00: status: { DRDY } [ 1.976142] ata2.00: configured for MWDMA2 [ 1.976541] ata2: EH complete [ 1.988771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 1.989390] ata2.00: failed command: READ DMA [ 1.989812] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 1.989812] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 1.991263] ata2.00: status: { DRDY } [ 1.992126] ata2.00: configured for MWDMA2 [ 1.992526] ata2: EH complete [ 2.004773] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.005394] ata2.00: failed command: READ DMA [ 2.005817] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.005817] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.007276] ata2.00: status: { DRDY } [ 2.008141] ata2.00: configured for MWDMA2 [ 2.008542] ata2: EH complete [ 2.020770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.021394] ata2.00: failed command: READ DMA [ 2.021815] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.021815] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.023273] ata2.00: status: { DRDY } [ 2.024138] ata2.00: configured for MWDMA2 [ 2.024538] ata2: EH complete [ 2.036771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.037392] ata2.00: failed command: READ DMA [ 2.037815] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.037815] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.039272] ata2.00: status: { DRDY } [ 2.040135] ata2.00: configured for MWDMA2 [ 2.040533] ata2: EH complete [ 2.052771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.053393] ata2.00: failed command: READ DMA [ 2.053816] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.053816] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.055273] ata2.00: status: { DRDY } [ 2.056136] ata2.00: configured for MWDMA2 [ 2.056538] ata2: EH complete [ 2.056834] EXT4-fs (sda): unable to read superblock [ 2.080771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.081394] ata2.00: failed command: READ DMA [ 2.081815] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.081815] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.083272] ata2.00: status: { DRDY } [ 2.084137] ata2.00: configured for MWDMA2 [ 2.084536] ata2: EH complete [ 2.096770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.097393] ata2.00: failed command: READ DMA [ 2.097814] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.097814] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.100505] ata2.00: status: { DRDY } [ 2.101411] ata2.00: configured for MWDMA2 [ 2.101809] ata2: EH complete [ 2.112771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.113392] ata2.00: failed command: READ DMA [ 2.113812] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.113812] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.115270] ata2.00: status: { DRDY } [ 2.116137] ata2.00: configured for MWDMA2 [ 2.116537] ata2: EH complete [ 2.128770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.129395] ata2.00: failed command: READ DMA [ 2.129819] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.129819] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.131275] ata2.00: status: { DRDY } [ 2.132138] ata2.00: configured for MWDMA2 [ 2.132538] ata2: EH complete [ 2.144772] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.145403] ata2.00: failed command: READ DMA [ 2.145825] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.145825] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.147286] ata2.00: status: { DRDY } [ 2.148149] ata2.00: configured for MWDMA2 [ 2.148549] ata2: EH complete [ 2.160771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.161400] ata2.00: failed command: READ DMA [ 2.161822] ata2.00: cmd c8/00:02:02:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.161822] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.163282] ata2.00: status: { DRDY } [ 2.164146] ata2.00: configured for MWDMA2 [ 2.164548] ata2: EH complete [ 2.164846] EXT4-fs (sda): unable to read superblock [ 2.184771] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.185398] ata2.00: failed command: READ DMA [ 2.185820] ata2.00: cmd c8/00:02:00:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.185820] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.187280] ata2.00: status: { DRDY } [ 2.188146] ata2.00: configured for MWDMA2 [ 2.188548] ata2: EH complete [ 2.200770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.201397] ata2.00: failed command: READ DMA [ 2.201820] ata2.00: cmd c8/00:02:00:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.201820] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.203281] ata2.00: status: { DRDY } [ 2.204144] ata2.00: configured for MWDMA2 [ 2.204543] ata2: EH complete [ 2.216770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.217404] ata2.00: failed command: READ DMA [ 2.217825] ata2.00: cmd c8/00:02:00:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.217825] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.219290] ata2.00: status: { DRDY } [ 2.220152] ata2.00: configured for MWDMA2 [ 2.220551] ata2: EH complete [ 2.232770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.233396] ata2.00: failed command: READ DMA [ 2.233819] ata2.00: cmd c8/00:02:00:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.233819] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.235281] ata2.00: status: { DRDY } [ 2.236145] ata2.00: configured for MWDMA2 [ 2.236545] ata2: EH complete [ 2.248769] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.249396] ata2.00: failed command: READ DMA [ 2.249818] ata2.00: cmd c8/00:02:00:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.249818] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.251279] ata2.00: status: { DRDY } [ 2.252145] ata2.00: configured for MWDMA2 [ 2.252543] ata2: EH complete [ 2.264770] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 [ 2.265393] ata2.00: failed command: READ DMA [ 2.265815] ata2.00: cmd c8/00:02:00:00:00/00:00:00:00:00/e0 tag 0 dma 1024 in [ 2.265815] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) [ 2.267271] ata2.00: status: { DRDY } [ 2.268133] ata2.00: configured for MWDMA2 [ 2.268534] ata2: EH complete [ 2.268833] SQUASHFS error: Failed to read block 0x0: -5 [ 2.269346] unable to read squashfs_super_block [ 2.269785] VFS: Cannot open root device "sda" or unknown-block(8,0): error -5 [ 2.270481] Please append a correct "root=" boot option; here are the available partitions: [ 2.271284] 0800 262144 sda [ 2.271285] driver: sd [ 2.271881] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,0) [ 2.272673] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 5.7.0-rc4-next-20200507+ #10 [ 2.273527] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 [ 2.274614] Call Trace: [ 2.274861] dump_stack+0x6b/0x83 [ 2.275189] panic+0x102/0x2f3 [ 2.275491] mount_block_root+0x290/0x339 [ 2.275879] prepare_namespace+0x13d/0x16c [ 2.276277] kernel_init_freeable+0x246/0x270 [ 2.276699] ? rdinit_setup+0x28/0x28 [ 2.277056] ? rest_init+0xb0/0xb0 [ 2.277387] kernel_init+0xa/0x110 [ 2.277718] ret_from_fork+0x1f/0x30 [ 2.278414] Kernel Offset: disabled [ 2.278755] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,0) ]--- qemu-system-x86_64: terminating on signal 2 Best, Hui > > Cheers! > > >> // start a QEMU that is get from https://github.com/davidhildenbrand/qemu/tree/virtio-mem-v2 and setup a file as a ide disk. >> /home/teawater/qemu/qemu/x86_64-softmmu/qemu-system-x86_64 -machine pc-i440fx-2.1,accel=kvm,usb=off -cpu host -no-reboot -nographic -device ide-hd,drive=hd -drive if=none,id=hd,file=/home/teawater/old.img,format=raw -kernel /home/teawater/kernel/bk2/arch/x86/boot/bzImage -append "console=ttyS0 root=/dev/sda nokaslr swiotlb=noforce" -m 1g,slots=10,maxmem=2G -smp 1 -s -monitor unix:/home/teawater/qemu/m,server,nowait >> >> // Setup virtio-mem and plug 256m memory in qemu monitor: >> object_add memory-backend-ram,id=mem1,size=256m >> device_add virtio-mem-pci,id=vm0,memdev=mem1 >> qom-set vm0 requested-size 256M >> >> // Go back to the terminal and access file system will got following kernel warning. >> [ 19.515549] pci 0000:00:04.0: [1af4:1015] type 00 class 0x00ff00 >> [ 19.516227] pci 0000:00:04.0: reg 0x10: [io 0x0000-0x007f] >> [ 19.517196] pci 0000:00:04.0: BAR 0: assigned [io 0x1000-0x107f] >> [ 19.517843] virtio-pci 0000:00:04.0: enabling device (0000 -> 0001) >> [ 19.535957] PCI Interrupt Link [LNKD] enabled at IRQ 11 >> [ 19.536507] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver >> [ 19.537528] virtio_mem virtio0: start address: 0x100000000 >> [ 19.538094] virtio_mem virtio0: region size: 0x10000000 >> [ 19.538621] virtio_mem virtio0: device block size: 0x200000 >> [ 19.539186] virtio_mem virtio0: memory block size: 0x8000000 >> [ 19.539752] virtio_mem virtio0: subblock size: 0x400000 >> [ 19.540357] virtio_mem virtio0: plugged size: 0x0 >> [ 19.540834] virtio_mem virtio0: requested size: 0x0 >> [ 20.170441] virtio_mem virtio0: plugged size: 0x0 >> [ 20.170933] virtio_mem virtio0: requested size: 0x10000000 >> [ 20.172247] Built 1 zonelists, mobility grouping on. Total pages: 266012 >> [ 20.172955] Policy zone: Normal >> >> / # ls >> [ 26.724565] ------------[ cut here ]------------ >> [ 26.725047] ata_piix 0000:00:01.1: DMA addr 0x000000010fc14000+49152 overflow (mask ffffffff, bus limit 0). >> [ 26.726024] WARNING: CPU: 0 PID: 179 at /home/teawater/kernel/linux2/kernel/dma/direct.c:364 dma_direct_map_page+0x118/0x130 >> [ 26.727141] Modules linked in: >> [ 26.727456] CPU: 0 PID: 179 Comm: ls Not tainted 5.6.0-rc5-next-20200311+ #9 >> [ 26.728163] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 >> [ 26.729305] RIP: 0010:dma_direct_map_page+0x118/0x130 >> [ 26.729825] Code: 8b 1f e8 3b 70 59 00 48 8d 4c 24 08 48 89 c6 4c 89 2c 24 4d 89 e1 49 89 e8 48 89 da 48 c7 c7 08 6c 34 82 31 c0 e8 d8 8e f7 ff <00 >> [ 26.731683] RSP: 0000:ffffc90000213838 EFLAGS: 00010082 >> [ 26.732205] RAX: 0000000000000000 RBX: ffff88803ebeb1b0 RCX: ffffffff82665148 >> [ 26.732913] RDX: 0000000000000001 RSI: 0000000000000092 RDI: 0000000000000046 >> [ 26.733621] RBP: 000000000000c000 R08: 00000000000001df R09: 00000000000001df >> [ 26.734338] R10: 0000000000000000 R11: ffffc900002135a8 R12: 00000000ffffffff >> [ 26.735054] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88803d55f5b0 >> [ 26.735772] FS: 00000000024e9880(0000) GS:ffff88803ec00000(0000) knlGS:0000000000000000 >> [ 26.736579] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> [ 26.737162] CR2: 00000000005bfc7f CR3: 0000000107e12004 CR4: 0000000000360ef0 >> [ 26.737879] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 >> [ 26.738591] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 >> [ 26.739307] Call Trace: >> [ 26.739564] dma_direct_map_sg+0x64/0xb0 >> [ 26.739969] ? ata_scsi_write_same_xlat+0x350/0x350 >> [ 26.740461] ata_qc_issue+0x214/0x260 >> [ 26.740839] ata_scsi_queuecmd+0x16a/0x490 >> [ 26.741255] scsi_queue_rq+0x679/0xa60 >> [ 26.741639] blk_mq_dispatch_rq_list+0x90/0x510 >> [ 26.742099] ? elv_rb_del+0x1f/0x30 >> [ 26.742456] ? deadline_remove_request+0x6a/0xb0 >> [ 26.742926] blk_mq_do_dispatch_sched+0x78/0x100 >> [ 26.743397] blk_mq_sched_dispatch_requests+0xf9/0x170 >> [ 26.743924] __blk_mq_run_hw_queue+0x7e/0x130 >> [ 26.744365] __blk_mq_delay_run_hw_queue+0x107/0x150 >> [ 26.744874] blk_mq_run_hw_queue+0x61/0x100 >> [ 26.745299] blk_mq_sched_insert_requests+0x71/0x110 >> [ 26.745798] blk_mq_flush_plug_list+0x14b/0x210 >> [ 26.746258] blk_flush_plug_list+0xbf/0xe0 >> [ 26.746675] blk_finish_plug+0x27/0x40 >> [ 26.747056] read_pages+0x7c/0x190 >> [ 26.747399] __do_page_cache_readahead+0x19c/0x1b0 >> [ 26.747886] filemap_fault+0x54e/0x9a0 >> [ 26.748268] ? alloc_set_pte+0x102/0x610 >> [ 26.748673] ? walk_component+0x64/0x2e0 >> [ 26.749072] ? filemap_map_pages+0xfa/0x3f0 >> [ 26.749498] ext4_filemap_fault+0x2c/0x3b >> [ 26.749911] __do_fault+0x38/0xb0 >> [ 26.750251] __handle_mm_fault+0xd2a/0x16d0 >> [ 26.750678] handle_mm_fault+0xe2/0x1f0 >> [ 26.751069] do_page_fault+0x250/0x590 >> [ 26.751448] async_page_fault+0x34/0x40 >> [ 26.751841] RIP: 0033:0x5bfc7f >> [ 26.752155] Code: Bad RIP value. >> [ 26.752481] RSP: 002b:00007ffef0289cd8 EFLAGS: 00010246 >> [ 26.752999] RAX: 0000000000000001 RBX: 00007ffef028af81 RCX: 00007ffef028af84 >> [ 26.753715] RDX: 00007ffef0289e01 RSI: 00007ffef0289ea8 RDI: 0000000000000001 >> [ 26.754424] RBP: 00000000000000ac R08: 0000000000000001 R09: 0000000000000006 >> [ 26.755144] R10: 000000000089fc18 R11: 0000000000000246 R12: 00007ffef0289ea8 >> [ 26.755853] R13: 000000000043a5f0 R14: 0000000000000000 R15: 0000000000000000 >> [ 26.756560] ---[ end trace 23cc3e9021358587 ]--- >> [ 26.778034] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 >> [ 26.778690] ata2.00: failed command: READ DMA >> [ 26.779131] ata2.00: cmd c8/00:e8:92:ad:00/00:00:00:00:00/e0 tag 0 dma 118784 in >> [ 26.779131] res 50/00:00:0a:80:03/00:00:00:00:00/a0 Emask 0x40 (internal error) >> [ 26.780691] ata2.00: status: { DRDY } >> [ 26.781603] ata2.00: configured for MWDMA2 >> [ 26.782034] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s >> [ 26.782958] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] >> [ 26.783646] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command >> [ 26.784321] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 ad 92 00 00 e8 00 >> [ 26.785056] blk_update_request: I/O error, dev sda, sector 44434 op 0x0:(READ) flags 0x80700 phys_seg 3 prio class 0 >> [ 26.786118] ata2: EH complete >> [ 26.810033] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 >> [ 26.810690] ata2.00: failed command: READ DMA >> [ 26.811133] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in >> [ 26.811133] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) >> [ 26.812681] ata2.00: status: { DRDY } >> [ 26.813569] ata2.00: configured for MWDMA2 >> [ 26.813992] ata2: EH complete >> [ 26.826031] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 >> [ 26.826687] ata2.00: failed command: READ DMA >> [ 26.827131] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in >> [ 26.827131] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) >> [ 26.828668] ata2.00: status: { DRDY } >> [ 26.829552] ata2.00: configured for MWDMA2 >> [ 26.829972] ata2: EH complete >> [ 26.842030] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 >> [ 26.842686] ata2.00: failed command: READ DMA >> [ 26.843127] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in >> [ 26.843127] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) >> [ 26.844656] ata2.00: status: { DRDY } >> [ 26.845538] ata2.00: configured for MWDMA2 >> [ 26.845961] ata2: EH complete >> [ 26.858030] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 >> [ 26.858690] ata2.00: failed command: READ DMA >> [ 26.859132] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in >> [ 26.859132] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) >> [ 26.860656] ata2.00: status: { DRDY } >> [ 26.861542] ata2.00: configured for MWDMA2 >> [ 26.861960] ata2: EH complete >> [ 26.874030] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 >> [ 26.874693] ata2.00: failed command: READ DMA >> [ 26.875131] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in >> [ 26.875131] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) >> [ 26.876675] ata2.00: status: { DRDY } >> [ 26.877554] ata2.00: configured for MWDMA2 >> [ 26.877976] ata2: EH complete >> [ 26.890030] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 >> [ 26.890655] ata2.00: failed command: READ DMA >> [ 26.891082] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in >> [ 26.891082] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) >> [ 26.892544] ata2.00: status: { DRDY } >> [ 26.893408] ata2.00: configured for MWDMA2 >> [ 26.893812] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s >> [ 26.894698] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] >> [ 26.895356] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command >> [ 26.895993] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 ad fa 00 00 08 00 >> [ 26.896693] blk_update_request: I/O error, dev sda, sector 44538 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 >> [ 26.897668] ata2: EH complete >> [ 26.922032] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 >> [ 26.922652] ata2.00: failed command: READ DMA >> [ 26.923080] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in >> [ 26.923080] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) >> [ 26.924538] ata2.00: status: { DRDY } >> [ 26.925404] ata2.00: configured for MWDMA2 >> [ 26.925807] ata2: EH complete >> [ 26.938031] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 >> [ 26.938650] ata2.00: failed command: READ DMA >> [ 26.939076] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in >> [ 26.939076] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) >> [ 26.940529] ata2.00: status: { DRDY } >> [ 26.941391] ata2.00: configured for MWDMA2 >> [ 26.941793] ata2: EH complete >> [ 26.954031] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 >> [ 26.954652] ata2.00: failed command: READ DMA >> [ 26.955079] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in >> [ 26.955079] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) >> [ 26.956536] ata2.00: status: { DRDY } >> [ 26.957400] ata2.00: configured for MWDMA2 >> [ 26.957800] ata2: EH complete >> [ 26.970031] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 >> [ 26.970653] ata2.00: failed command: READ DMA >> [ 26.971079] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in >> [ 26.971079] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) >> [ 26.972536] ata2.00: status: { DRDY } >> [ 26.973402] ata2.00: configured for MWDMA2 >> [ 26.973804] ata2: EH complete >> [ 26.986030] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 >> [ 26.986654] ata2.00: failed command: READ DMA >> [ 26.987082] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in >> [ 26.987082] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) >> [ 26.988541] ata2.00: status: { DRDY } >> [ 26.989406] ata2.00: configured for MWDMA2 >> [ 26.989807] ata2: EH complete >> [ 27.002031] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 >> [ 27.002653] ata2.00: failed command: READ DMA >> [ 27.003083] ata2.00: cmd c8/00:08:fa:ad:00/00:00:00:00:00/e0 tag 0 dma 4096 in >> [ 27.003083] res 50/00:00:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) >> [ 27.004541] ata2.00: status: { DRDY } >> [ 27.005404] ata2.00: configured for MWDMA2 >> [ 27.005806] sd 1:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s >> [ 27.006688] sd 1:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current] >> [ 27.007346] sd 1:0:0:0: [sda] tag#0 Add. Sense: Unaligned write command >> [ 27.007982] sd 1:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 ad fa 00 00 08 00 >> [ 27.008680] blk_update_request: I/O error, dev sda, sector 44538 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 >> [ 27.009649] ata2: EH complete >> Bus error >> >> I cannot reproduce this warning with set file as nvdimm with following command. >> sudo /home/teawater/qemu/qemu/x86_64-softmmu/qemu-system-x86_64 -machine pc,accel=kvm,kernel_irqchip,nvdimm -no-reboot -nographic -kernel /home/teawater/kernel/bk2/arch/x86/boot/bzImage -append "console=ttyS0 root=/dev/pmem0 swiotlb=noforce" -m 1g,slots=1,maxmem=2G -smp 1 -device nvdimm,id=nv0,memdev=mem0 -object memory-backend-file,id=mem0,mem-path=/home/teawater/old.img,size=268435456 -monitor unix:/home/teawater/qemu/m,server,nowait >> >> Best, >> Hui > > > -- > Thanks, > > David / dhildenb
On 14.05.20 12:02, teawater wrote: > > >> 2020年5月14日 16:48，David Hildenbrand <david@redhat.com> 写道： >> >> On 14.05.20 08:44, teawater wrote: >>> Hi David, >>> >>> I got a kernel warning with v2 and v3. >> >> Hi Hui, >> >> thanks for playing with the latest versions. Surprisingly, I can >> reproduce even by hotplugging a DIMM instead as well - that's good, so >> it's not related to virtio-mem, lol. Seems to be some QEMU setup issue >> with older machine types. >> >> Can you switch to a newer qemu machine version, especially >> pc-i440fx-5.0? Both, hotplugging DIMMs and virtio-mem works for me with >> that QEMU machine just fine. > > I still could reproduce this issue with pc-i440fx-5.0 or pc. Did I miss anything? > Below I don't even see virtio_mem. I had to repair the image (filesystem fsck) because it was broken, can you try that as well? Also, it would be great if you could test with v4.
On 14.05.20 12:12, David Hildenbrand wrote: > On 14.05.20 12:02, teawater wrote: >> >> >>> 2020年5月14日 16:48，David Hildenbrand <david@redhat.com> 写道： >>> >>> On 14.05.20 08:44, teawater wrote: >>>> Hi David, >>>> >>>> I got a kernel warning with v2 and v3. >>> >>> Hi Hui, >>> >>> thanks for playing with the latest versions. Surprisingly, I can >>> reproduce even by hotplugging a DIMM instead as well - that's good, so >>> it's not related to virtio-mem, lol. Seems to be some QEMU setup issue >>> with older machine types. >>> >>> Can you switch to a newer qemu machine version, especially >>> pc-i440fx-5.0? Both, hotplugging DIMMs and virtio-mem works for me with >>> that QEMU machine just fine. >> >> I still could reproduce this issue with pc-i440fx-5.0 or pc. Did I miss anything? >> > > Below I don't even see virtio_mem. I had to repair the image (filesystem > fsck) because it was broken, can you try that as well? > > Also, it would be great if you could test with v4. > Correction, something seems to be broken either in QEMU or the kernel. Once I define a DIMM so it's added and online during boot, I get these issues: (I have virtio-mem v4 installed in the guest) #! /bin/bash sudo x86_64-softmmu/qemu-system-x86_64 \ -machine pc-i440fx-5.0,accel=kvm,usb=off \ -cpu host \ -no-reboot \ -nographic \ -device ide-hd,drive=hd \ -drive if=none,id=hd,file=/home/dhildenb/git/Fedora-Cloud-Base-31-1.9.x86_64.qcow2,format=qcow2 \ -m 1g,slots=10,maxmem=2G \ -smp 1 \ -object memory-backend-ram,id=mem0,size=256m \ -device pc-dimm,id=dimm0,memdev=mem0 \ -s \ -monitor unix:/var/tmp/monitor,server,nowait Without the DIMM it seems to work just fine.
On 14.05.20 13:10, David Hildenbrand wrote: > On 14.05.20 12:12, David Hildenbrand wrote: >> On 14.05.20 12:02, teawater wrote: >>> >>> >>>> 2020年5月14日 16:48，David Hildenbrand <david@redhat.com> 写道： >>>> >>>> On 14.05.20 08:44, teawater wrote: >>>>> Hi David, >>>>> >>>>> I got a kernel warning with v2 and v3. >>>> >>>> Hi Hui, >>>> >>>> thanks for playing with the latest versions. Surprisingly, I can >>>> reproduce even by hotplugging a DIMM instead as well - that's good, so >>>> it's not related to virtio-mem, lol. Seems to be some QEMU setup issue >>>> with older machine types. >>>> >>>> Can you switch to a newer qemu machine version, especially >>>> pc-i440fx-5.0? Both, hotplugging DIMMs and virtio-mem works for me with >>>> that QEMU machine just fine. >>> >>> I still could reproduce this issue with pc-i440fx-5.0 or pc. Did I miss anything? >>> >> >> Below I don't even see virtio_mem. I had to repair the image (filesystem >> fsck) because it was broken, can you try that as well? >> >> Also, it would be great if you could test with v4. >> > > Correction, something seems to be broken either in QEMU or the kernel. Once I > define a DIMM so it's added and online during boot, I get these issues: > > (I have virtio-mem v4 installed in the guest) > > #! /bin/bash > sudo x86_64-softmmu/qemu-system-x86_64 \ > -machine pc-i440fx-5.0,accel=kvm,usb=off \ > -cpu host \ > -no-reboot \ > -nographic \ > -device ide-hd,drive=hd \ > -drive if=none,id=hd,file=/home/dhildenb/git/Fedora-Cloud-Base-31-1.9.x86_64.qcow2,format=qcow2 \ > -m 1g,slots=10,maxmem=2G \ > -smp 1 \ > -object memory-backend-ram,id=mem0,size=256m \ > -device pc-dimm,id=dimm0,memdev=mem0 \ > -s \ > -monitor unix:/var/tmp/monitor,server,nowait > > > Without the DIMM it seems to work just fine. > And another correction. Using QEMU v5.0.0, Linux 5.7-rc5, untouched Fedora-Cloud-Base-32-1.6.x86_64.qcow2, I get even without any memory hotplug: #! /bin/bash sudo x86_64-softmmu/qemu-system-x86_64 \ -machine pc-i440fx-5.0,accel=kvm,usb=off \ -cpu host \ -no-reboot \ -nographic \ -device ide-hd,drive=hd \ -drive if=none,id=hd,file=/home/dhildenb/git/Fedora-Cloud-Base-32-1.6.x86_64.qcow2,format=qcow2 \ -m 5g,slots=10,maxmem=6G \ -smp 1 \ -s \ -kernel /home/dhildenb/git/linux/arch/x86/boot/bzImage \ -append "console=ttyS0 rd.shell nokaslr swiotlb=noforce" \ -monitor unix:/var/tmp/monitor,server,nowait Observe how big the initial RAM even is! So this is no DIMM/hotplug/virtio_mem issue. With memory hotplug, it seems to get more likely to trigger if "swiotlb=noforce" is not specified. "swiotlb=noforce" seems to trigger some pre-existing issue here. Without "swiotlb=noforce", I was only able to observe this via pc-i440fx-2.1,
On 14.05.20 13:47, David Hildenbrand wrote: > On 14.05.20 13:10, David Hildenbrand wrote: >> On 14.05.20 12:12, David Hildenbrand wrote: >>> On 14.05.20 12:02, teawater wrote: >>>> >>>> >>>>> 2020年5月14日 16:48，David Hildenbrand <david@redhat.com> 写道： >>>>> >>>>> On 14.05.20 08:44, teawater wrote: >>>>>> Hi David, >>>>>> >>>>>> I got a kernel warning with v2 and v3. >>>>> >>>>> Hi Hui, >>>>> >>>>> thanks for playing with the latest versions. Surprisingly, I can >>>>> reproduce even by hotplugging a DIMM instead as well - that's good, so >>>>> it's not related to virtio-mem, lol. Seems to be some QEMU setup issue >>>>> with older machine types. >>>>> >>>>> Can you switch to a newer qemu machine version, especially >>>>> pc-i440fx-5.0? Both, hotplugging DIMMs and virtio-mem works for me with >>>>> that QEMU machine just fine. >>>> >>>> I still could reproduce this issue with pc-i440fx-5.0 or pc. Did I miss anything? >>>> >>> >>> Below I don't even see virtio_mem. I had to repair the image (filesystem >>> fsck) because it was broken, can you try that as well? >>> >>> Also, it would be great if you could test with v4. >>> >> >> Correction, something seems to be broken either in QEMU or the kernel. Once I >> define a DIMM so it's added and online during boot, I get these issues: >> >> (I have virtio-mem v4 installed in the guest) >> >> #! /bin/bash >> sudo x86_64-softmmu/qemu-system-x86_64 \ >> -machine pc-i440fx-5.0,accel=kvm,usb=off \ >> -cpu host \ >> -no-reboot \ >> -nographic \ >> -device ide-hd,drive=hd \ >> -drive if=none,id=hd,file=/home/dhildenb/git/Fedora-Cloud-Base-31-1.9.x86_64.qcow2,format=qcow2 \ >> -m 1g,slots=10,maxmem=2G \ >> -smp 1 \ >> -object memory-backend-ram,id=mem0,size=256m \ >> -device pc-dimm,id=dimm0,memdev=mem0 \ >> -s \ >> -monitor unix:/var/tmp/monitor,server,nowait >> >> >> Without the DIMM it seems to work just fine. >> > > And another correction. > > Using QEMU v5.0.0, Linux 5.7-rc5, untouched > Fedora-Cloud-Base-32-1.6.x86_64.qcow2, I get even without any memory hotplug: > > #! /bin/bash > sudo x86_64-softmmu/qemu-system-x86_64 \ > -machine pc-i440fx-5.0,accel=kvm,usb=off \ > -cpu host \ > -no-reboot \ > -nographic \ > -device ide-hd,drive=hd \ > -drive if=none,id=hd,file=/home/dhildenb/git/Fedora-Cloud-Base-32-1.6.x86_64.qcow2,format=qcow2 \ > -m 5g,slots=10,maxmem=6G \ > -smp 1 \ > -s \ > -kernel /home/dhildenb/git/linux/arch/x86/boot/bzImage \ > -append "console=ttyS0 rd.shell nokaslr swiotlb=noforce" \ > -monitor unix:/var/tmp/monitor,server,nowait > > > Observe how big the initial RAM even is! > > > So this is no DIMM/hotplug/virtio_mem issue. With memory hotplug, it seems to get > more likely to trigger if "swiotlb=noforce" is not specified. > > "swiotlb=noforce" seems to trigger some pre-existing issue here. Without > "swiotlb=noforce", I was only able to observe this via pc-i440fx-2.1, > (talking to myself :) ) I think I finally understood why using "swiotlb=noforce" with hotplugged memory is wrong - or with memory > 3GB. Via "swiotlb=noforce" you tell the system to "Never use bounce buffers (for debugging)". This works as long as all memory is DMA memory (e.g., < 3GB) AFAIK. "If specified, trying to map memory that cannot be used with DMA will fail, and a rate-limited warning will be printed." Hotplugged memory (under QEMU) is never added below 4GB, because of the PCI hole. So both, memory from DIMMs and from virtio-mem will end up at or above 4GB. To make a device use that memory, you need bounce buffers. Hotplugged memory is never DMA memory.
> 2020年5月14日 20:19，David Hildenbrand <david@redhat.com> 写道： > > On 14.05.20 13:47, David Hildenbrand wrote: >> On 14.05.20 13:10, David Hildenbrand wrote: >>> On 14.05.20 12:12, David Hildenbrand wrote: >>>> On 14.05.20 12:02, teawater wrote: >>>>> >>>>> >>>>>> 2020年5月14日 16:48，David Hildenbrand <david@redhat.com> 写道： >>>>>> >>>>>> On 14.05.20 08:44, teawater wrote: >>>>>>> Hi David, >>>>>>> >>>>>>> I got a kernel warning with v2 and v3. >>>>>> >>>>>> Hi Hui, >>>>>> >>>>>> thanks for playing with the latest versions. Surprisingly, I can >>>>>> reproduce even by hotplugging a DIMM instead as well - that's good, so >>>>>> it's not related to virtio-mem, lol. Seems to be some QEMU setup issue >>>>>> with older machine types. >>>>>> >>>>>> Can you switch to a newer qemu machine version, especially >>>>>> pc-i440fx-5.0? Both, hotplugging DIMMs and virtio-mem works for me with >>>>>> that QEMU machine just fine. >>>>> >>>>> I still could reproduce this issue with pc-i440fx-5.0 or pc. Did I miss anything? >>>>> >>>> >>>> Below I don't even see virtio_mem. I had to repair the image (filesystem >>>> fsck) because it was broken, can you try that as well? >>>> >>>> Also, it would be great if you could test with v4. >>>> >>> >>> Correction, something seems to be broken either in QEMU or the kernel. Once I >>> define a DIMM so it's added and online during boot, I get these issues: >>> >>> (I have virtio-mem v4 installed in the guest) >>> >>> #! /bin/bash >>> sudo x86_64-softmmu/qemu-system-x86_64 \ >>> -machine pc-i440fx-5.0,accel=kvm,usb=off \ >>> -cpu host \ >>> -no-reboot \ >>> -nographic \ >>> -device ide-hd,drive=hd \ >>> -drive if=none,id=hd,file=/home/dhildenb/git/Fedora-Cloud-Base-31-1.9.x86_64.qcow2,format=qcow2 \ >>> -m 1g,slots=10,maxmem=2G \ >>> -smp 1 \ >>> -object memory-backend-ram,id=mem0,size=256m \ >>> -device pc-dimm,id=dimm0,memdev=mem0 \ >>> -s \ >>> -monitor unix:/var/tmp/monitor,server,nowait >>> >>> >>> Without the DIMM it seems to work just fine. >>> >> >> And another correction. >> >> Using QEMU v5.0.0, Linux 5.7-rc5, untouched >> Fedora-Cloud-Base-32-1.6.x86_64.qcow2, I get even without any memory hotplug: >> >> #! /bin/bash >> sudo x86_64-softmmu/qemu-system-x86_64 \ >> -machine pc-i440fx-5.0,accel=kvm,usb=off \ >> -cpu host \ >> -no-reboot \ >> -nographic \ >> -device ide-hd,drive=hd \ >> -drive if=none,id=hd,file=/home/dhildenb/git/Fedora-Cloud-Base-32-1.6.x86_64.qcow2,format=qcow2 \ >> -m 5g,slots=10,maxmem=6G \ >> -smp 1 \ >> -s \ >> -kernel /home/dhildenb/git/linux/arch/x86/boot/bzImage \ >> -append "console=ttyS0 rd.shell nokaslr swiotlb=noforce" \ >> -monitor unix:/var/tmp/monitor,server,nowait >> >> >> Observe how big the initial RAM even is! >> >> >> So this is no DIMM/hotplug/virtio_mem issue. With memory hotplug, it seems to get >> more likely to trigger if "swiotlb=noforce" is not specified. >> >> "swiotlb=noforce" seems to trigger some pre-existing issue here. Without >> "swiotlb=noforce", I was only able to observe this via pc-i440fx-2.1, >> > > (talking to myself :) ) > > I think I finally understood why using "swiotlb=noforce" with hotplugged > memory is wrong - or with memory > 3GB. Via "swiotlb=noforce" you tell > the system to "Never use bounce buffers (for debugging)". This works as > long as all memory is DMA memory (e.g., < 3GB) AFAIK. > > "If specified, trying to map memory that cannot be used with DMA will > fail, and a rate-limited warning will be printed." > > Hotplugged memory (under QEMU) is never added below 4GB, because of the > PCI hole. So both, memory from DIMMs and from virtio-mem will end up at > or above 4GB. To make a device use that memory, you need bounce buffers. > > Hotplugged memory is never DMA memory. > Hi David, It is fixed when I remove "swiotlb=noforce”. Thanks for your help. Best, Hui > -- > Thanks, > > David / dhildenb
This series is based on latest linux-next. The patches are located at: https://github.com/davidhildenbrand/linux.git virtio-mem-v3 Patch #1 - #10 where contained in v2 and only contain minor modifications (mostly smaller fixes). The remaining patches are new and contain smaller optimizations. Details about virtio-mem can be found in the cover letter of v2 [1]. A basic QEMU implementation was posted yesterday [2]. [1] https://lkml.kernel.org/r/20200311171422.10484-1-david@redhat.com [2] https://lkml.kernel.org/r/20200506094948.76388-1-david@redhat.com v2 -> v3: - "virtio-mem: Paravirtualized memory hotplug" -- Include "linux/slab.h" to fix build issues -- Remember the "region_size", helpful for patch #11 -- Minor simplifaction in virtio_mem_overlaps_range() -- Use notifier_from_errno() instead of notifier_to_errno() in notifier -- More reliable check for added memory when unloading the driver - "virtio-mem: Allow to specify an ACPI PXM as nid" -- Also print the nid - Added patch #11-#15 Cc: Sebastien Boeuf <sebastien.boeuf@intel.com> Cc: Samuel Ortiz <samuel.ortiz@intel.com> Cc: Robert Bradford <robert.bradford@intel.com> Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Cc: teawater <teawaterz@linux.alibaba.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> David Hildenbrand (15): virtio-mem: Paravirtualized memory hotplug virtio-mem: Allow to specify an ACPI PXM as nid virtio-mem: Paravirtualized memory hotunplug part 1 virtio-mem: Paravirtualized memory hotunplug part 2 mm: Allow to offline unmovable PageOffline() pages via MEM_GOING_OFFLINE virtio-mem: Allow to offline partially unplugged memory blocks mm/memory_hotplug: Introduce offline_and_remove_memory() virtio-mem: Offline and remove completely unplugged memory blocks virtio-mem: Better retry handling MAINTAINERS: Add myself as virtio-mem maintainer virtio-mem: Add parent resource for all added "System RAM" virtio-mem: Drop manual check for already present memory virtio-mem: Unplug subblocks right-to-left virtio-mem: Use -ETXTBSY as error code if the device is busy virtio-mem: Try to unplug the complete online memory block first MAINTAINERS | 7 + drivers/acpi/numa/srat.c | 1 + drivers/virtio/Kconfig | 17 + drivers/virtio/Makefile | 1 + drivers/virtio/virtio_mem.c | 1962 +++++++++++++++++++++++++++++++ include/linux/memory_hotplug.h | 1 + include/linux/page-flags.h | 10 + include/uapi/linux/virtio_ids.h | 1 + include/uapi/linux/virtio_mem.h | 208 ++++ mm/memory_hotplug.c | 81 +- mm/page_alloc.c | 26 + mm/page_isolation.c | 9 + 12 files changed, 2314 insertions(+), 10 deletions(-) create mode 100644 drivers/virtio/virtio_mem.c create mode 100644 include/uapi/linux/virtio_mem.h