Re: [syzbot] [ext4?] possible deadlock in ext4_setattr

[Michael S. Tsirkin]

On Sun, May 14, 2023 at 12:24:32PM -0700, syzbot wrote:
> syzbot has bisected this issue to:
> 
> commit a3c06ae158dd6fa8336157c31d9234689d068d02
> Author: Parav Pandit <parav@xxxxxxxxxx>
> Date:   Tue Jan 5 10:32:03 2021 +0000
> 
>     vdpa_sim_net: Add support for user supported devices
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16e372c6280000
> start commit:   e922ba281a8d Add linux-next specific files for 20230512
> git tree:       linux-next
> final oops:     https://syzkaller.appspot.com/x/report.txt?x=15e372c6280000
> console output: https://syzkaller.appspot.com/x/log.txt?x=11e372c6280000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=17a4c2d44484b62f
> dashboard link: https://syzkaller.appspot.com/bug?extid=cbb68193bdb95af4340a
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=172a21c6280000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16b67fc6280000
> 
> Reported-by: syzbot+cbb68193bdb95af4340a@xxxxxxxxxxxxxxxxxxxxxxxxx
> Fixes: a3c06ae158dd ("vdpa_sim_net: Add support for user supported devices")
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

I don't see how this can be related, I don't think the test setup uses
vdpa sim at all.

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MST