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 PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Sat, 05 Dec 2020 20:17:18 -0500 From: Qian Cai <qcai@...hat.com> To: Valentin Schneider <valentin.schneider@....com> Cc: Peter Zijlstra <peterz@...radead.org>, tglx@...utronix.de, mingo@...nel.org, linux-kernel@...r.kernel.org, bigeasy@...utronix.de, qais.yousef@....com, swood@...hat.com, juri.lelli@...hat.com, vincent.guittot@...aro.org, dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de, bristot@...hat.com, vincent.donnefort@....com, tj@...nel.org, ouwen210@...mail.com Subject: Re: [PATCH v4 11/19] sched/core: Make migrate disable and CPU hotplug cooperative On Sat, 2020-12-05 at 18:37 +0000, Valentin Schneider wrote: > From there I see: > > [20798.166987][ T650] CPU127 nr_running=2 > [20798.171185][ T650] p=migration/127 > [20798.175161][ T650] p=kworker/127:1 > > so this might be another workqueue hurdle. This should be prevented by: > > 06249738a41a ("workqueue: Manually break affinity on hotplug") Well, since it was reproduced on the latest linux-next which has already included the commit. > Note that much earlier in your log, you have a softlockup on CPU127: > > [ 74.278367][ C127] watchdog: BUG: soft lockup - CPU#127 stuck for 23s! > [swapper/0:1] That's something separate. It was there all the time. https://lore.kernel.org/linux-acpi/20200929183444.25079-1-cai@redhat.com/
Powered by blists - more mailing lists