On Tue, Feb 14, 2023 at 6:52 PM Hillf Danton <[email protected]> wrote:
>
> On Tue, 14 Feb 2023 00:14:42 -0800
> > syzbot has found a reproducer for the following issue on:
> >
> > HEAD commit: f6feea56f66d Merge tag 'mm-hotfixes-stable-2023-02-13-13-5..
> > git tree: upstream
> > console+strace: https://syzkaller.appspot.com/x/log.txt?x=165ee62b480000
> > kernel config: https://syzkaller.appspot.com/x/.config?x=42ba4da8e1e6af9f
> > dashboard link: https://syzkaller.appspot.com/bug?extid=f0c4082ce5ebebdac63b
> > compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
> > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14ba7207480000
> > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15fd30d0c80000
> >
> > Downloadable assets:
> > disk image: https://storage.googleapis.com/syzbot-assets/1ae0143f08d5/disk-f6feea56.raw.xz
> > vmlinux: https://storage.googleapis.com/syzbot-assets/18b8a23fa0cb/vmlinux-f6feea56.xz
> > kernel image: https://storage.googleapis.com/syzbot-assets/d915f4c5c8c0/bzImage-f6feea56.xz
> > mounted in repro: https://storage.googleapis.com/syzbot-assets/1acd3b288433/mount_0.gz
> >
> > folio_mark_accessed+0x51c/0xf00 mm/swap.c:515
>
> Syzbot was launched without MGLRU enabled [1].
> Dmitry could you turn it on by default?
Thanks for the heads up!
(I should have followed up with Dmitry earlier... doing it now.)
On Wed, 15 Feb 2023 at 07:02, Yu Zhao <[email protected]> wrote:
> > On Tue, 14 Feb 2023 00:14:42 -0800
> > > syzbot has found a reproducer for the following issue on:
> > >
> > > HEAD commit: f6feea56f66d Merge tag 'mm-hotfixes-stable-2023-02-13-13-5..
> > > git tree: upstream
> > > console+strace: https://syzkaller.appspot.com/x/log.txt?x=165ee62b480000
> > > kernel config: https://syzkaller.appspot.com/x/.config?x=42ba4da8e1e6af9f
> > > dashboard link: https://syzkaller.appspot.com/bug?extid=f0c4082ce5ebebdac63b
> > > compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
> > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14ba7207480000
> > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15fd30d0c80000
> > >
> > > Downloadable assets:
> > > disk image: https://storage.googleapis.com/syzbot-assets/1ae0143f08d5/disk-f6feea56.raw.xz
> > > vmlinux: https://storage.googleapis.com/syzbot-assets/18b8a23fa0cb/vmlinux-f6feea56.xz
> > > kernel image: https://storage.googleapis.com/syzbot-assets/d915f4c5c8c0/bzImage-f6feea56.xz
> > > mounted in repro: https://storage.googleapis.com/syzbot-assets/1acd3b288433/mount_0.gz
> > >
>
> > > folio_mark_accessed+0x51c/0xf00 mm/swap.c:515
> >
> > Syzbot was launched without MGLRU enabled [1].
> > Dmitry could you turn it on by default?
>
> Thanks for the heads up!
>
> (I should have followed up with Dmitry earlier... doing it now.)
Here is configs change (speak up if you don't agree with something):
https://github.com/google/syzkaller/pull/3683/commits/e3c95b410e328b52fef013a8071e47c6c278b1ed