linux-kernel - Re: nfs4_schedule_state_manager stuck in tight loop

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: <3404A3C2-31BE-4D39-A256-E3A1FB48ACFB@flyingcircus.io>
Date: Tue, 5 Mar 2024 07:09:19 +0100
From: Christian Theune <ct@...ingcircus.io>
To: Chuck Lever <chuck.lever@...cle.com>
Cc: linux-nfs@...r.kernel.org,
 jlayton@...nel.org,
 linux-kernel@...r.kernel.org,
 Linux regressions mailing list <regressions@...ts.linux.dev>,
 trondmy@...merspace.com,
 anna@...nel.org
Subject: Re: nfs4_schedule_state_manager stuck in tight loop

Hi,

not sure whether I may have missed a response that didn’t make it back to me or any of the lists.

Just in case, because the CC didn’t include the original addendum I made to my report:

Addendum:

I’ve checked kernel changelogs since then but didn’t find anything that I could relate to this aside from *maybe* dfda2a5eb66a685aa6d0b81c0cef1cf8bfe0b3c4 (rename(): fix the locking of subdirectories) which mentions NFS but doesn’t describe the potential impact.

We’re running 5.15.148 now and as it’s been another 2 months there might be the chance of another lockup in the near future ;)

If anyone has ideas on how to debug/approach a reproducer I’d be more than happy to help and try to provide more data.

Cheers,
Christian

-- 
Christian Theune · ct@...ingcircus.io · +49 345 219401 0
Flying Circus Internet Operations GmbH · https://flyingcircus.io
Leipziger Str. 70/71 · 06108 Halle (Saale) · Deutschland
HR Stendal HRB 21169 · Geschäftsführer: Christian Theune, Christian Zagrodnick