From: Mimi Zohar <zohar@linux.ibm.com>
To: Miklos Szeredi <miklos@szeredi.hu>,
syzbot <syzbot+b42fe626038981fb7bfa@syzkaller.appspotmail.com>,
Hillf Danton <hdanton@sina.com>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
syzkaller-bugs <syzkaller-bugs@googlegroups.com>,
Al Viro <viro@zeniv.linux.org.uk>,
linux-integrity <linux-integrity@vger.kernel.org>
Subject: Re: [syzbot] possible deadlock in mnt_want_write (2)
Date: Thu, 22 Jul 2021 09:50:06 -0400 [thread overview]
Message-ID: <decadc5869f3de0bc78f783703e5ca9286f42522.camel@linux.ibm.com> (raw)
In-Reply-To: <CAJfpegsYNcv+mEVpLBxVGSQhXr0Q_UnOUC1VkYuYB=xzRt+f-A@mail.gmail.com>
[CC'ing Hillf Danton <hdanton@sina.com>]
Hi Miklos,
On Mon, 2021-07-19 at 17:11 +0200, Miklos Szeredi wrote:
> [CC: linux-intergrity]
>
> On Tue, 15 Jun 2021 at 18:59, syzbot
> <syzbot+b42fe626038981fb7bfa@syzkaller.appspotmail.com> wrote:
> >
> > Hello,
> >
> > syzbot found the following issue on:
> >
> > HEAD commit: 06af8679 coredump: Limit what can interrupt coredumps
> > git tree: upstream
> > console output: https://syzkaller.appspot.com/x/log.txt?x=162f99afd00000
> > kernel config: https://syzkaller.appspot.com/x/.config?x=547a5e42ca601229
> > dashboard link: https://syzkaller.appspot.com/bug?extid=b42fe626038981fb7bfa
> > compiler: Debian clang version 11.0.1-2
> >
> > Unfortunately, I don't have any reproducer for this issue yet.
There was a similar syzbot report and followup discussion [1].
According to Amir Goldstein, it's a false positive lockdep warning.
At this point we understand how to fix the problem, but are waiting for
a reproducer.
thanks,
Mimi
[1] Message-Id: <20210616090142.734-1-hdanton@sina.com>
> >
> > IMPORTANT: if you fix the issue, please add the following tag to the commit:
> > Reported-by: syzbot+b42fe626038981fb7bfa@syzkaller.appspotmail.com
next prev parent reply other threads:[~2021-07-22 13:50 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <00000000000067d24205c4d0e599@google.com>
2021-07-19 15:11 ` [syzbot] possible deadlock in mnt_want_write (2) Miklos Szeredi
2021-07-22 13:50 ` Mimi Zohar [this message]
2022-07-02 17:27 ` syzbot
2022-07-05 12:53 ` Mimi Zohar
[not found] ` <20220706121038.2045-1-hdanton@sina.com>
2022-07-06 22:24 ` Mimi Zohar
2023-06-06 9:12 ` Miklos Szeredi
2023-06-06 9:12 ` syzbot
2023-06-06 9:13 ` Miklos Szeredi
2023-10-04 16:45 ` [syzbot] [integrity] [overlayfs] " syzbot
2023-10-05 9:36 ` Amir Goldstein
2023-10-05 9:59 ` syzbot
2023-10-05 10:26 ` Amir Goldstein
2023-10-05 10:46 ` syzbot
2023-10-05 11:47 ` Mimi Zohar
2023-10-05 13:22 ` Amir Goldstein
2023-10-05 13:35 ` Mimi Zohar
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