From: Christoph Hellwig <hch@lst.de>
To: Amir Goldstein <amir73il@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
syzbot <syzbot+9a5b0ced8b1bfb238b56@syzkaller.appspotmail.com>,
gregkh@linuxfoundation.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com,
tj@kernel.org, valesini@yandex-team.ru,
Christoph Hellwig <hch@lst.de>,
Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
Miklos Szeredi <miklos@szeredi.hu>
Subject: Re: [syzbot] [kernfs?] possible deadlock in kernfs_fop_llseek
Date: Fri, 5 Apr 2024 08:51:35 +0200 [thread overview]
Message-ID: <20240405065135.GA3959@lst.de> (raw)
In-Reply-To: <CAOQ4uximHfK78KFabJA3Hf4R0En6-GfJ3eF96Lzmc94PGuGayA@mail.gmail.com>
On Thu, Apr 04, 2024 at 12:33:40PM +0300, Amir Goldstein wrote:
> I don't follow what you are saying.
> Which code is in non-starter violation?
> kernfs for calling lookup_bdev() with internal of->mutex held?
That is a huge problem, and has been causing endless annoying lockdep
chains in the block layer for us. If we have some way to kill this
the whole block layer would benefit.
next prev parent reply other threads:[~2024-04-05 6:51 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-03 18:23 [syzbot] [kernfs?] possible deadlock in kernfs_fop_llseek syzbot
2024-04-03 23:51 ` syzbot
2024-04-04 6:54 ` Amir Goldstein
2024-04-04 8:11 ` Al Viro
2024-04-04 8:21 ` Al Viro
2024-04-04 8:40 ` Al Viro
2024-04-04 9:33 ` Amir Goldstein
2024-04-04 22:01 ` Al Viro
2024-04-05 10:34 ` Amir Goldstein
2024-04-05 6:51 ` Christoph Hellwig [this message]
2024-04-05 11:19 ` Christian Brauner
2024-04-05 13:48 ` Christian Brauner
2024-04-05 14:52 ` Christoph Hellwig
2024-04-05 15:41 ` Tejun Heo
2024-04-06 3:54 ` Al Viro
2024-04-05 10:47 ` Christian Brauner
2024-04-05 14:48 ` Amir Goldstein
2024-04-06 4:09 ` Al Viro
2024-04-06 5:25 ` Amir Goldstein
2024-04-05 15:08 ` Amir Goldstein
2024-04-05 15:37 ` syzbot
2024-04-05 16:23 ` Al Viro
2024-04-06 5:34 ` Amir Goldstein
2024-04-06 7:05 ` syzbot
2024-04-06 7:11 ` Al Viro
2024-04-06 8:23 ` Hillf Danton
2024-04-07 0:48 ` Al Viro
2024-04-06 8:57 ` Amir Goldstein
2024-04-07 0:50 ` Al Viro
2024-04-07 11:02 ` Amir Goldstein
2024-04-09 9:18 ` Christian Brauner
2024-04-04 0:42 ` Hillf Danton
2024-04-04 1:08 ` syzbot
2024-04-04 2:12 ` Hillf Danton
2024-04-04 2:39 ` syzbot
2024-04-05 23:00 ` Hillf Danton
2024-04-05 23:02 ` syzbot
2024-04-06 0:10 ` Al Viro
2024-04-05 23:02 ` Hillf Danton
2024-04-06 0:34 ` syzbot
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