diff options
| author | Lai Jiangshan | 2023-01-12 16:14:27 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-03-10 09:32:53 +0100 |
| commit | 0903111d67ef2508d5332967e12322af1d692ba2 (patch) | |
| tree | 3732b6a00cfb9c66188c5f4e92693591be5d0ca5 /drivers/s390 | |
| parent | 3bfadfd8b62bd88984fe1eb6ce1debcce90ea003 (diff) | |
workqueue: Protects wq_unbound_cpumask with wq_pool_attach_mutex
[ Upstream commit 99c621ef243bda726fb8d982a274ded96570b410 ]
When unbind_workers() reads wq_unbound_cpumask to set the affinity of
freshly-unbound kworkers, it only holds wq_pool_attach_mutex. This isn't
sufficient as wq_unbound_cpumask is only protected by wq_pool_mutex.
Make wq_unbound_cpumask protected with wq_pool_attach_mutex and also
remove the need of temporary saved_cpumask.
Fixes: 10a5a651e3af ("workqueue: Restrict kworker in the offline CPU pool running on housekeeping CPUs")
Reported-by: Valentin Schneider <vschneid@redhat.com>
Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/s390')
0 files changed, 0 insertions, 0 deletions