linux-kernel - Re: [syzbot] [f2fs?] possible deadlock in f2fs_add_inline

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Message-ID: <CANp29Y4kNfuBK6LxU5nAHwA8wGqGYK9EJ-uBFef70s=AEbNP0g@mail.gmail.com>
Date:   Thu, 26 Oct 2023 11:21:21 +0200
From:   Aleksandr Nogikh <nogikh@...gle.com>
To:     syzbot <syzbot+a4976ce949df66b1ddf1@...kaller.appspotmail.com>
Cc:     arthurgrillo@...eup.net, chao@...nel.org, hdanton@...a.com,
        jaegeuk@...nel.org, linux-f2fs-devel@...ts.sourceforge.net,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        lizhi.xu@...driver.com, mairacanal@...eup.net, mcanal@...lia.com,
        penguin-kernel@...ove.sakura.ne.jp, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [f2fs?] possible deadlock in f2fs_add_inline_entry

For some still unknown reason, syzbot's bisections of fs bugs
sometimes end up in drm. There've been quite a few such cases
already..

Please ignore this bot's message.


On Thu, Oct 26, 2023 at 8:59 AM syzbot
<syzbot+a4976ce949df66b1ddf1@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit a0e6a017ab56936c0405fe914a793b241ed25ee0
> Author: Maíra Canal <mcanal@...lia.com>
> Date:   Tue May 23 12:32:08 2023 +0000
>
>     drm/vkms: Fix race-condition between the hrtimer and the atomic commit
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=166c090d680000
> start commit:   28f20a19294d Merge tag 'x86-urgent-2023-08-26' of git://gi..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=21a578092dd61d05
> dashboard link: https://syzkaller.appspot.com/bug?extid=a4976ce949df66b1ddf1
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15a09340680000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=118909eba80000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: drm/vkms: Fix race-condition between the hrtimer and the atomic commit
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
>
> --
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