Re: [LKP] [mm/memory.c] 6558038e45: general_protection_fault:#[##]

[Rong Chen]

On 10/18/2018 06:26 AM, Andrew Morton wrote:
> On Wed, 17 Oct 2018 09:36:00 +0800 kernel test robot <rong.a.chen@xxxxxxxxx> wrote:
>
> > FYI, we noticed the following commit (built with gcc-6):
> >
> > commit: 6558038e4540a22ee4f99a5def74791189102bc0 ("mm/memory.c: recheck page table entry with page table lock held")
> > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
> >
> > in testcase: trinity
> > with following parameters:
> >
> > 	runtime: 300s
> >
> > test-description: Trinity is a linux system call fuzz tester.
> > test-url: http://codemonkey.org.uk/projects/trinity/
> >
> >
> > on test machine: qemu-system-x86_64 -enable-kvm -cpu qemu64,+ssse3 -smp 4 -m 4G
> >
> > caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
> mm-recheck-page-table-entry-with-page-table-lock-held-fix.patch ("mm:
> fix the crash observed with syzkaller run") will most likely fix this.
> Was it applied during this testing?

It wasn't applied during this testing.

Best Regards,
Rong Chen