28 Jul
2021
28 Jul
'21
5:51 p.m.
On Wed, Jul 28, 2021 at 7:45 PM Greg KH gregkh@linuxfoundation.org wrote:
to roll out 5.4.135 on a few of the hosts, and encounter a rare "WARNING: CPU ... PID ... at kthread_is_per_cpu+0x1c/0x20" splat (see full dmesg below)
Previous kernel I was running there, never seeing that, was 5.4.114
Can you narrow this down to a specific commit using 'git bisect'?
Not set up for it, but can try - I normally build from .tar.xz's. Given the WARNING seems to take a day to happen, it'll take a while to bisect that by commits.
I'll try to revert that one 5.4.118 change in kernel/sched/fair.c, in parallel.
best regards Patrick