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| author | Lai Jiangshan <jiangshan.ljs@antgroup.com> | 2022-07-29 12:44:38 +0300 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2022-07-29 20:49:02 +0300 |
| commit | 46a4d679ef88285ea17c3e1e4fed330be2044f21 (patch) | |
| tree | 041b7b34242dc7f44b8bd6bf894839e778926b12 /kernel/bpf/helpers.c | |
| parent | 8bee9dd953b69c634d1c9a3241a8b357469ad4aa (diff) | |
| download | linux-46a4d679ef88285ea17c3e1e4fed330be2044f21.tar.xz | |
workqueue: Avoid a false warning in unbind_workers()
Doing set_cpus_allowed_ptr() with wq_unbound_cpumask can be possible
fails and trigger the false warning.
Use cpu_possible_mask instead when wq_unbound_cpumask has no active CPUs.
It is very easy to trigger the warning:
Set wq_unbound_cpumask to a small set of CPUs.
Offline all the CPUs of wq_unbound_cpumask.
Offline an extra CPU and trigger the warning.
Fixes: 10a5a651e3af ("workqueue: Restrict kworker in the offline CPU pool running on housekeeping CPUs")
Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/bpf/helpers.c')
0 files changed, 0 insertions, 0 deletions