netdev - Re: [PATCH net] netlink: avoid infinite retry looping in netlink

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

Message-ID: <9fa0c0ea-9c5d-4039-856f-222486283a3c@1und1.de>
Date: Thu, 14 Aug 2025 14:51:27 +0200
From: Julian Taylor <julian.taylor@...d1.de>
To: <patchwork-bot+netdevbpf@...nel.org>, Fedor Pchelkin <pchelkin@...ras.ru>
CC: <davem@...emloft.net>, <kuba@...nel.org>, <pabeni@...hat.com>,
	<kuniyu@...gle.com>, <edumazet@...gle.com>, <horms@...nel.org>,
	<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<lvc-project@...uxtesting.org>, <stable@...r.kernel.org>
Subject: Re: [PATCH net] netlink: avoid infinite retry looping in
 netlink_unicast()


On 31.07.25 04:30, patchwork-bot+netdevbpf@...nel.org wrote:
> Hello:
> 
> This patch was applied to netdev/net.git (main)
> by Jakub Kicinski <kuba@...nel.org>:
> 
> On Mon, 28 Jul 2025 11:06:47 +0300 you wrote:
>> netlink_attachskb() checks for the socket's read memory allocation
>> constraints. Firstly, it has:
>>
>>    rmem < READ_ONCE(sk->sk_rcvbuf)
>>
>> to check if the just increased rmem value fits into the socket's receive
>> buffer. If not, it proceeds and tries to wait for the memory under:
>>
>> [...]
> 
> Here is the summary with links:
>    - [net] netlink: avoid infinite retry looping in netlink_unicast()
>      https://git.kernel.org/netdev/net/c/759dfc7d04ba
> 
> You are awesome, thank you!

hello,
as far as I can tell this patch has not made it to the 6.1 stable tree yet in the 6.1.148 review yet:
https://www.spinics.net/lists/stable/msg866199.html

As this seems to be causing issues in distributions releasing 6.1.147 can this still be added to the next possible stable release?
See following issues in relation to loading audit rules which seems to trigger the fixed bug:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1111017
https://github.com/amazonlinux/amazon-linux-2023/issues/988

I have tested this patch solves the problem in the Debian bookworm using 6.1.x

cheers,
Julian Taylor