| Message ID | 1532533683-5988-1-git-send-email-joro@8bytes.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | PTI x86-32 Updates and Fixes | expand |
On Wed, 2018-07-25 at 17:48 +0200, Joerg Roedel wrote: > Hi, > > here are three patches on-top of tip/x86/pti to update the > vmallo_fault() fix and also with another important fix. > > The first two patches remove the WARN_ON_ONCE(in_nmi) from > the vmalloc_fault() function and revert the previous fix, as > discussed at the last patch-set. > > The third patch is an important fix for a silent memory > corruption issue found by the trinity fuzzer, which did take > a while to track down. But I found it and with the fix the > fuzzer already runs for couple of hours now and the VM is > still alive. > > Regards, > > Joerg > > Joerg Roedel (3): > x86/mm: Remove in_nmi() warning from vmalloc_fault() > Revert "perf/core: Make sure the ring-buffer is mapped in all > page-tables" > x86/kexec: Allocate 8k PGDs for PTI > > arch/x86/kernel/machine_kexec_32.c | 5 +++-- > arch/x86/mm/fault.c | 2 -- > kernel/events/ring_buffer.c | 16 ---------------- > 3 files changed, 3 insertions(+), 20 deletions(-) Hi Joerg, I've found no significant issues in my testing of this patch set. The only minor thing I noted is that in your previous "v8" patch set ([PATCH 38/39] x86/mm/pti: Add Warning when booting on a PCID capable CPU), it reports the warning on non-PCID capable CPUs: I think you intended a bitwise "&", not a logical "&&" in the if statement? Tested-by: David H. Gutteridge <dhgutteridge@sympatico.ca> Regards, Dave
Hi, here are three patches on-top of tip/x86/pti to update the vmallo_fault() fix and also with another important fix. The first two patches remove the WARN_ON_ONCE(in_nmi) from the vmalloc_fault() function and revert the previous fix, as discussed at the last patch-set. The third patch is an important fix for a silent memory corruption issue found by the trinity fuzzer, which did take a while to track down. But I found it and with the fix the fuzzer already runs for couple of hours now and the VM is still alive. Regards, Joerg Joerg Roedel (3): x86/mm: Remove in_nmi() warning from vmalloc_fault() Revert "perf/core: Make sure the ring-buffer is mapped in all page-tables" x86/kexec: Allocate 8k PGDs for PTI arch/x86/kernel/machine_kexec_32.c | 5 +++-- arch/x86/mm/fault.c | 2 -- kernel/events/ring_buffer.c | 16 ---------------- 3 files changed, 3 insertions(+), 20 deletions(-)