6.6-stable review patch. If anyone has any objections, please let me know.
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From: Yang Yingliang yangyingliang@huawei.com
commit fe7a11c78d2a9bdb8b50afc278a31ac177000948 upstream.
If cpuset_cpu_inactive() fails, set_rq_online() need be called to rollback.
Fixes: 120455c514f7 ("sched: Fix hotplug vs CPU bandwidth control") Cc: stable@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com Signed-off-by: Peter Zijlstra (Intel) peterz@infradead.org Link: https://lore.kernel.org/r/20240703031610.587047-5-yangyingliang@huaweicloud.... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- kernel/sched/core.c | 1 + 1 file changed, 1 insertion(+)
--- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -9773,6 +9773,7 @@ int sched_cpu_deactivate(unsigned int cp ret = cpuset_cpu_inactive(cpu); if (ret) { sched_smt_present_inc(cpu); + sched_set_rq_online(rq, cpu); balance_push_set(cpu, false); set_cpu_active(cpu, true); sched_update_numa(cpu, true);