Re: [syzbot] [mm?] kernel BUG in validate_mm (2)

From: Aleksandr Nogikh
Date: Fri Aug 11 2023 - 08:11:17 EST


#syz fix: mm: validate the mm before dropping the mmap lock

On Mon, Aug 7, 2023 at 2:11 PM Aleksandr Nogikh <nogikh@xxxxxxxxxx> wrote:
>
> On Mon, Aug 7, 2023 at 3:49 AM syzbot
> <syzbot+70b97abe3e253d1c3f8e@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> >
> > syzbot suspects this issue was fixed by commit:
> >
> > commit ef513aa7aa5038d2f53e9f2932af5006f37ed0b6
> > Author: Luca Weiss <luca@xxxxxxxxx>
> > Date: Thu Apr 13 23:17:49 2023 +0000
> >
> > dt-bindings: iio: adc: qcom,spmi-vadc: Allow 1/16 for pre-scaling
> >
> > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11aeb085a80000
> > start commit: a901a3568fd2 Merge tag 'iomap-6.5-merge-1' of git://git.ke..
> > git tree: upstream
> > kernel config: https://syzkaller.appspot.com/x/.config?x=f5e1158c5b2f83bb
> > dashboard link: https://syzkaller.appspot.com/bug?extid=70b97abe3e253d1c3f8e
> > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1511d490a80000
> > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=130e5cfb280000
> >
> > If the result looks correct, please mark the issue as fixed by replying with:
> >
> > #syz fix: dt-bindings: iio: adc: qcom,spmi-vadc: Allow 1/16 for pre-scaling
>
> No, that's wrong. Please ignore the email.
>
> >
> > For information about bisection process see: https://goo.gl/tpsmEJ#bisection
> >