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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, the config for this test is a randconfig. by this commit, the config has below we don't have enough knowledge how this diff impacts rcutorture test results, just FYI what we observed in our tests. kernel test robot noticed "WARNING:at_kernel/rcu/rcutorture.c:#rcu_torture_stats_print[rcutorture]" on: commit: 7a1fcbb52e611c49331bd66dd2da1efa4c0afef7 ("rcutorture: Add SRCU-V scenario for preemptible Tiny SRCU") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master [test failed on linux-next/master f76698bd9a8ca01d3581236082d786e9a6b72bb7] in testcase: rcutorture version: with following parameters: runtime: 300s test: default torture_type: busted_srcud compiler: gcc-13 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) +-------------------------------------------------------------------------+------------+------------+ | | d65635ebba | 7a1fcbb52e | +-------------------------------------------------------------------------+------------+------------+ | WARNING:suspicious_RCU_usage | 6 | 6 | | kernel/rcu/rcutorture.c:#suspicious_rcu_dereference_check()usage | 6 | 6 | | WARNING:at_kernel/rcu/rcutorture.c:#rcu_torture_stats_print[rcutorture] | 0 | 6 | | EIP:rcu_torture_stats_print | 0 | 6 | +-------------------------------------------------------------------------+------------+------------+ If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202406241652.e44865a0-lkp@intel.com The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240624/202406241652.e44865a0-lkp@intel.com [ 96.952168][ T436] busted_srcud-torture: !!! [ 96.952253][ T436] ------------[ cut here ]------------ [ 96.954867][ T436] WARNING: CPU: 0 PID: 436 at kernel/rcu/rcutorture.c:2268 rcu_torture_stats_print+0x253/0x496 [rcutorture] [ 96.956537][ T436] Modules linked in: rcutorture torture ppdev i6300esb rapl ipmi_devintf parport_pc bochs drm_vram_helper parport drm_ttm_helper ttm drm_kms_helper i2c_piix4 tiny_power_button ata_generic button fuse drm drm_panel_orientation_quirks i2c_core configfs [ 96.959483][ T436] CPU: 0 PID: 436 Comm: rcu_torture_sta Not tainted 6.10.0-rc1-00067-g7a1fcbb52e61 #1 [ 96.960380][ T436] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 96.961355][ T436] EIP: rcu_torture_stats_print+0x253/0x496 [rcutorture] [ 96.962139][ T436] Code: 85 c0 74 02 0f 0b 83 3d e4 17 59 ef 00 74 02 0f 0b 83 3d e0 17 59 ef 00 74 02 0f 0b 83 3d dc 17 59 ef 00 74 02 0f 0b 4b 7e 02 <0f> 0b 68 31 76 59 ef 31 db e8 40 11 54 de 5f 83 fb 0b 72 0c 89 da [ 96.963988][ T436] EAX: 00000000 EBX: 00000003 ECX: ef597627 EDX: ef59762c [ 96.964651][ T436] ESI: ef591994 EDI: 0000453c EBP: c6567f6c ESP: c6567eec [ 96.965187][ T436] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010206 [ 96.965660][ T436] CR0: 80050033 CR2: b6b5f000 CR3: 04f71000 CR4: 00040690 [ 96.966172][ T436] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 96.966624][ T436] DR6: fffe0ff0 DR7: 00000400 [ 96.966924][ T436] Call Trace: [ 96.967138][ T436] ? show_regs+0x45/0x4b [ 96.967415][ T436] ? rcu_torture_stats_print+0x253/0x496 [rcutorture] [ 96.967849][ T436] ? __warn+0x7c/0x113 [ 96.968117][ T436] ? report_bug+0xb3/0x111 [ 96.968406][ T436] ? rcu_torture_stats_print+0x253/0x496 [rcutorture] [ 96.968880][ T436] ? exc_overflow+0x37/0x37 [ 96.969174][ T436] ? handle_bug+0x2b/0x47 [ 96.969452][ T436] ? exc_invalid_op+0x17/0x53 [ 96.969755][ T436] ? handle_exception+0x100/0x100 [ 96.970141][ T436] ? exc_overflow+0x37/0x37 [ 96.970434][ T436] ? rcu_torture_stats_print+0x253/0x496 [rcutorture] [ 96.970871][ T436] ? exc_overflow+0x37/0x37 [ 96.971162][ T436] ? rcu_torture_stats_print+0x253/0x496 [rcutorture] [ 96.971599][ T436] ? __timer_delete_sync+0x82/0x92 [ 96.971938][ T436] rcu_torture_stats+0x3d/0x5e [rcutorture] [ 96.972322][ T436] kthread+0xdc/0xe1 [ 96.972575][ T436] ? rcu_torture_stats_print+0x496/0x496 [rcutorture] [ 96.973010][ T436] ? kthread_park+0x62/0x62 [ 96.973302][ T436] ret_from_fork+0x1c/0x2f [ 96.973589][ T436] ? kthread_park+0x62/0x62 [ 96.973879][ T436] ret_from_fork_asm+0x12/0x18 [ 96.974230][ T436] entry_INT80_32+0xef/0xef [ 96.974519][ T436] irq event stamp: 535 [ 96.974777][ T436] hardirqs last enabled at (543): [] console_unlock+0x80/0xd4 [ 96.975183][ T436] hardirqs last disabled at (550): [] console_unlock+0x63/0xd4 [ 96.975588][ T436] softirqs last enabled at (104): [] handle_softirqs+0x2cf/0x2f9 [ 96.976007][ T436] softirqs last disabled at (97): [] __do_softirq+0xa/0xc [ 96.976392][ T436] ---[ end trace 0000000000000000 ]--- [ 96.999461][ T436] Reader Pipe: 1738294 6779 1992 57 1 0 0 0 0 0 0 [ 96.999803][ T436] busted_srcud-torture: Reader Batch: 1747123 0 0 0 0 0 0 0 0 0 0 diff between parent and this commit. --- /pkg/linux/i386-randconfig-r022-20221003/gcc-13/d65635ebba92ee02e8284acfabbaf6b59ec0b5b6/.config 2024-06-23 23:24:45.203220229 +0800 +++ /pkg/linux/i386-randconfig-r022-20221003/gcc-13/7a1fcbb52e611c49331bd66dd2da1efa4c0afef7/.config 2024-06-23 23:59:34.976722738 +0800 @@ -133,7 +133,7 @@ CONFIG_IRQ_TIME_ACCOUNTING=y CONFIG_TREE_RCU=y CONFIG_PREEMPT_RCU=y CONFIG_RCU_EXPERT=y -CONFIG_TREE_SRCU=y +CONFIG_TINY_SRCU=y CONFIG_TASKS_RCU_GENERIC=y CONFIG_FORCE_TASKS_RCU=y CONFIG_NEED_TASKS_RCU=y