linux-kernel - Re: [syzbot] [kernfs?] possible deadlock in kernfs_fop

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Message-Id: <20240406082351.1213-1-hdanton@sina.com>
Date: Sat,  6 Apr 2024 16:23:51 +0800
From: Hillf Danton <hdanton@...a.com>
To: Al Viro <viro@...iv.linux.org.uk>
Cc: syzbot <syzbot+9a5b0ced8b1bfb238b56@...kaller.appspotmail.com>,
	amir73il@...il.com,
	linux-kernel@...r.kernel.org,
	miklos@...redi.hu,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [kernfs?] possible deadlock in kernfs_fop_llseek

On Sat, 6 Apr 2024 08:11:30 +0100 Al Viro <viro@....linux.org.uk>
> On Sat, Apr 06, 2024 at 12:05:04AM -0700, syzbot wrote:
> > commit:         3398bf34 kernfs: annotate different lockdep class for ..
> > git tree:       https://github.com/amir73il/linux/ vfs-fixes
> > kernel config:  https://syzkaller.appspot.com/x/.config?x=c5cda112a8438056
> > dashboard link: https://syzkaller.appspot.com/bug?extid=9a5b0ced8b1bfb238b56
> > compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
> > 
> > Note: no patches were applied.
> 
> How about the same test on 6c6e47d69d821047097909288b6d7f1aafb3b9b1?
> 
JFYI it works [1]

[1] https://lore.kernel.org/lkml/000000000000a386f2061562ba6a@google.com/