linux-kernel - Re: [PATCH] mm: fix lockdep issues in writeback handling

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20250903090934.4b5479d8@canb.auug.org.au>
Date: Wed, 3 Sep 2025 09:09:34 +1000
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Aleksandr Nogikh <nogikh@...gle.com>, david@...hat.com,
 joannelkoong@...il.com, linux-fsdevel@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-mm@...ck.org, m.szyprowski@...sung.com,
 mszeredi@...hat.com, willy@...radead.org, syzkaller-bugs@...glegroups.com
Subject: Re: [PATCH] mm: fix lockdep issues in writeback handling

Hi Andrew,

On Tue, 2 Sep 2025 15:40:43 -0700 Andrew Morton <akpm@...ux-foundation.org> wrote:
>
> Perhaps Stephen can directly add it to linux-next for a while?

I will add it to linux-next from today (until Miklos sorts it out).
Note that the fuse tree was updated since yesterday's linux-next, but
this patch is still not included.

> From: Marek Szyprowski <m.szyprowski@...sung.com>
> To: linux-fsdevel@...r.kernel.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org
> Cc: Marek Szyprowski <m.szyprowski@...sung.com>, "Matthew Wilcox (Oracle)" <willy@...radead.org>, Andrew Morton <akpm@...ux-foundation.org>, David Hildenbrand <david@...hat.com>, Miklos Szeredi <mszeredi@...hat.com>, Joanne Koong <joannelkoong@...il.com>
> Subject: [PATCH] mm: fix lockdep issues in writeback handling
> Date: Tue, 26 Aug 2025 15:09:48 +0200
> Sender: owner-linux-mm@...ck.org
> X-Mailer: git-send-email 2.34.1
> 
> Commit 167f21a81a9c ("mm: remove BDI_CAP_WRITEBACK_ACCT") removed
> BDI_CAP_WRITEBACK_ACCT flag and refactored code that depend on it.
> Unfortunately it also moved some variable intialization out of guarded
> scope in writeback handling, what triggers a true lockdep warning. Fix
> this by moving initialization to the proper place.
> 
> Fixes: 167f21a81a9c ("mm: remove BDI_CAP_WRITEBACK_ACCT")

This is now commit

  2841808f35ee ("mm: remove BDI_CAP_WRITEBACK_ACCT")

in the fuse tree.

> Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>

-- 
Cheers,
Stephen Rothwell

Content of type "application/pgp-signature" skipped