netdev - Re: [PATCH net] net: linkwatch: use system_unbound

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: 
 <172297607550.1692635.2271755679626099885.git-patchwork-notify@kernel.org>
Date: Tue, 06 Aug 2024 20:27:55 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Eric Dumazet <edumazet@...gle.com>
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
 netdev@...r.kernel.org, eric.dumazet@...il.com, syzkaller@...glegroups.com
Subject: Re: [PATCH net] net: linkwatch: use system_unbound_wq

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Mon,  5 Aug 2024 08:58:21 +0000 you wrote:
> linkwatch_event() grabs possibly very contended RTNL mutex.
> 
> system_wq is not suitable for such work.
> 
> Inspired by many noisy syzbot reports.
> 
> 3 locks held by kworker/0:7/5266:
>  #0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
>  #0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
>  #1: ffffc90003f6fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
>  , at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
>  #2: ffffffff8fa6f208 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
> 
> [...]

Here is the summary with links:
  - [net] net: linkwatch: use system_unbound_wq
    https://git.kernel.org/netdev/net/c/3e7917c0cdad

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html