Messages in this thread | | | From | Willem de Bruijn <> | Date | Tue, 9 Oct 2018 12:02:58 -0400 | Subject | Re: general protection fault in __handle_mm_fault |
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On Tue, Oct 9, 2018 at 11:00 AM Eric Dumazet <eric.dumazet@gmail.com> wrote: > > > > On 10/09/2018 01:53 AM, Aneesh Kumar K.V wrote: > ... > > >>>> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13cdb67e400000 > ... > > > > > Can you check with this patch
Thanks. With that patch the crash indeed does not occur.
> > Well, this is a C repro, you can test this yourself instead of asking Willem who > already did a painful bisection.
Thanks Eric. It does take some effort to get the syzkaller environment up and running [1] and I happen to have it ready, so I don't mind testing a few patches.
It just had to wait until I got to the office. Somehow the debug kernel produces so much output that it consistently locked up my shell over ssh.
[1] for reference: https://github.com/google/syzkaller/blob/master/docs/linux/setup_ubuntu-host_qemu-vm_x86-64-kernel.md
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