Re: [syzbot] [kernel?] Internal error in should_fail_ex

From: Aleksandr Nogikh
Date: Tue May 16 2023 - 13:23:46 EST


On Tue, May 16, 2023 at 2:32 PM Christian Brauner <brauner@xxxxxxxxxx> wrote:
>
> On Tue, May 16, 2023 at 03:35:03AM -0700, syzbot wrote:
> > Hello,
> >
> > syzbot found the following issue on:
> >
> > HEAD commit: 457391b03803 Linux 6.3
> > git tree: upstream
> > console output: https://syzkaller.appspot.com/x/log.txt?x=15671fa2280000
> > kernel config: https://syzkaller.appspot.com/x/.config?x=385e197a58ca4afe
> > dashboard link: https://syzkaller.appspot.com/bug?extid=c84b326736ee471158dc
> > compiler: arm-linux-gnueabi-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> > userspace arch: arm
> >
> > Unfortunately, I don't have any reproducer for this issue yet.
> >
> > Downloadable assets:
> > disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/c35b5b2731d2/non_bootable_disk-457391b0.raw.xz
> > vmlinux: https://storage.googleapis.com/syzbot-assets/2a1bf3bafeb6/vmlinux-457391b0.xz
> > kernel image: https://storage.googleapis.com/syzbot-assets/21f1e3b4a5a9/zImage-457391b0.xz
> >
> > IMPORTANT: if you fix the issue, please add the following tag to the commit:
> > Reported-by: syzbot+c84b326736ee471158dc@xxxxxxxxxxxxxxxxxxxxxxxxx
>
> On Tue, May 16, 2023 at 03:35:02AM -0700, syzbot wrote:
> > Hello,
> >
> > syzbot found the following issue on:
> >
> > HEAD commit: 457391b03803 Linux 6.3
> > git tree: upstream
> > console output: https://syzkaller.appspot.com/x/log.txt?x=134e0b01280000
> > kernel config: https://syzkaller.appspot.com/x/.config?x=385e197a58ca4afe
> > dashboard link: https://syzkaller.appspot.com/bug?extid=729f1325904c82acd601
> > compiler: arm-linux-gnueabi-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> > userspace arch: arm
> > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=118f964e280000
> > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16f6e776280000
> >
> > Downloadable assets:
> > disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/c35b5b2731d2/non_bootable_disk-457391b0.raw.xz
> > vmlinux: https://storage.googleapis.com/syzbot-assets/2a1bf3bafeb6/vmlinux-457391b0.xz
> > kernel image: https://storage.googleapis.com/syzbot-assets/21f1e3b4a5a9/zImage-457391b0.xz
> >
> > IMPORTANT: if you fix the issue, please add the following tag to the commit:
> > Reported-by: syzbot+729f1325904c82acd601@xxxxxxxxxxxxxxxxxxxxxxxxx
>
> Not complaining but why am I blessed with an explicit Cc on this?
>

You were Cc'd because syzbot incorrectly identified the guilty file
for the bug, I've sent a fix [1].
Sorry for the noise.

[1] https://github.com/google/syzkaller/pull/3905

--
Aleksandr