From: Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com>
To: syzbot <syzbot+8073030e235a5a84dd31@syzkaller.appspotmail.com>,
asm@florahospitality.com, bfields@fieldses.org,
boqun.feng@gmail.com, jlayton@kernel.org,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
mingo@redhat.com, peterz@infradead.org,
syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk,
will@kernel.org
Subject: Re: [syzbot] possible deadlock in f_getown
Date: Thu, 23 Sep 2021 13:20:00 -0400 [thread overview]
Message-ID: <ff026440-590e-6268-6ced-326f4da27be2@gmail.com> (raw)
In-Reply-To: <000000000000ed2e6705cca36282@google.com>
On 23/9/21 2:03 am, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
>
> commit f671a691e299f58835d4660d642582bf0e8f6fda
> Author: Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com>
> Date: Fri Jul 2 09:18:30 2021 +0000
>
> fcntl: fix potential deadlocks for &fown_struct.lock
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15fa8017300000
> start commit: 293837b9ac8d Revert "i915: fix remap_io_sg to verify the p..
> git tree: upstream
> kernel config: https://syzkaller.appspot.com/x/.config?x=18fade5827eb74f7
> dashboard link: https://syzkaller.appspot.com/bug?extid=8073030e235a5a84dd31
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=171390add00000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10050553d00000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: fcntl: fix potential deadlocks for &fown_struct.lock
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
>
#syz fix: fcntl: fix potential deadlocks for &fown_struct.lock
Think I got jumbled a bit when marking the dups. This bug shares the
same root cause as [1], and is fixed by the same patch. Nice that Syzbot
noticed.
Link: https://syzkaller.appspot.com/bug?extid=e6d5398a02c516ce5e70 [1]
next prev parent reply other threads:[~2021-09-23 17:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-28 7:48 possible deadlock in f_getown syzbot
2020-11-30 12:39 ` syzbot
2020-11-30 19:23 ` syzbot
2021-09-23 6:03 ` [syzbot] " syzbot
2021-09-23 17:20 ` Desmond Cheong Zhi Xi [this message]
2021-09-23 17:54 ` Jeff Layton
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