linux-kernel - Re: WARNING: refcount bug in p9_req

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Date:   Wed, 11 Nov 2020 14:54:13 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     syzbot <syzbot+edec7868af5997928fe9@...kaller.appspotmail.com>,
        LKML <linux-kernel@...r.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        v9fs-developer@...ts.sourceforge.net
Subject: Re: WARNING: refcount bug in p9_req_put

On Sat, Aug 15, 2020 at 7:23 AM syzbot
<syzbot+edec7868af5997928fe9@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit a39c46067c845a8a2d7144836e9468b7f072343e
> Author: Christoph Hellwig <hch@....de>
> Date:   Fri Jul 10 08:57:22 2020 +0000
>
>     net/9p: validate fds in p9_fd_open
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1015f012900000
> start commit:   459e3a21 gcc-9: properly declare the {pv,hv}clock_page sto..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=ef1b87b455c397cf
> dashboard link: https://syzkaller.appspot.com/bug?extid=edec7868af5997928fe9
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1642ee48a00000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: net/9p: validate fds in p9_fd_open
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

#syz fix: net/9p: validate fds in p9_fd_open