linux-kernel - Re: [PATCH v2] jbd2: allocate lock_class_key for jbd2

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <176340680642.138575.13187935729137016105.b4-ty@mit.edu>
Date: Mon, 17 Nov 2025 14:13:35 -0500
From: "Theodore Ts'o" <tytso@....edu>
To: Jan Kara <jack@...e.cz>, Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Cc: "Theodore Ts'o" <tytso@....edu>, Andreas Dilger <adilger.kernel@...ger.ca>,
        Jan Kara <jack@...e.com>, linux-ext4@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] jbd2: allocate lock_class_key for jbd2_handle dynamically


On Wed, 22 Oct 2025 20:11:37 +0900, Tetsuo Handa wrote:
> syzbot is reporting possibility of deadlock due to sharing lock_class_key
> for jbd2_handle across ext4 and ocfs2. But this is a false positive, for
> one disk partition can't have two filesystems at the same time.
> 
> 

Applied, thanks!

[1/1] jbd2: allocate lock_class_key for jbd2_handle dynamically
      commit: 524c3853831cf4f7e1db579e487c757c3065165c

Best regards,
-- 
Theodore Ts'o <tytso@....edu>