linux-kernel - Re: [syzbot] WARNING in inc

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Date:   Wed, 17 Nov 2021 08:25:11 +0100
From:   Miklos Szeredi <miklos@...redi.hu>
To:     syzbot <syzbot+1c8034b9f0e640f9ba45@...kaller.appspotmail.com>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Miklos Szeredi <mszeredi@...hat.com>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Al Viro <viro@...iv.linux.org.uk>
Subject: Re: [syzbot] WARNING in inc_nlink (2)

On Wed, 17 Nov 2021 at 06:32, syzbot
<syzbot+1c8034b9f0e640f9ba45@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 97f044f690bac2b094bfb7fb2d177ef946c85880
> Author: Miklos Szeredi <mszeredi@...hat.com>
> Date:   Fri Oct 22 15:03:02 2021 +0000
>
>     fuse: don't increment nlink in link()
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10563ac9b00000
> start commit:   1da38549dd64 Merge tag 'nfsd-5.15-3' of git://git.kernel.o..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=e2ffb281e6323643
> dashboard link: https://syzkaller.appspot.com/bug?extid=1c8034b9f0e640f9ba45
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11f16d57300000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15758d57300000
>
> If the result looks correct, please mark the issue as fixed by replying with:

Highly unlikely: the original report was for sysvfs and the fix is for fuse.

Thanks,
Miklos