linux-kernel - Re: [syzbot] [ext4?] possible deadlock in ext4_xattr_inode

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Message-ID: <20240311175441.o3ppno62leqgo2lw@quack3>
Date: Mon, 11 Mar 2024 18:54:41 +0100
From: Jan Kara <jack@...e.cz>
To: syzbot <syzbot+352d78bd60c8e9d6ecdc@...kaller.appspotmail.com>
Cc: adilger.kernel@...ger.ca, axboe@...nel.dk, brauner@...nel.org,
	elic@...dia.com, jack@...e.cz, jasowang@...hat.com,
	linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, llvm@...ts.linux.dev, mst@...hat.com,
	nathan@...nel.org, ndesaulniers@...gle.com, parav@...dia.com,
	syzkaller-bugs@...glegroups.com, trix@...hat.com, tytso@....edu
Subject: Re: [syzbot] [ext4?] possible deadlock in ext4_xattr_inode_iget (2)

On Fri 08-03-24 06:06:04, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
> 
> commit 6f861765464f43a71462d52026fbddfc858239a5
> Author: Jan Kara <jack@...e.cz>
> Date:   Wed Nov 1 17:43:10 2023 +0000
> 
>     fs: Block writes to mounted block devices
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14f08e0a180000
> start commit:   610a9b8f49fb Linux 6.7-rc8
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=56c2c781bb4ee18
> dashboard link: https://syzkaller.appspot.com/bug?extid=352d78bd60c8e9d6ecdc
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15a4d65ee80000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1715ad7ee80000
> 
> If the result looks correct, please mark the issue as fixed by replying with:
 
Makes sense.

#syz fix: fs: Block writes to mounted block devices

								Honza
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR