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ACPI: acpi_pad: Fix memory leak in power saving threads

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[ Upstream commit 8b29d29abc484d638213dd79a18a95ae7e5bb402 ]

Fix once per second (round_robin_time) memory leak of about 1 KB in
each acpi_pad kernel idling thread that is activated.

Found by testing with kmemleak.

Signed-off-by: Lenny Szubowicz <lszubowi@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lenny Szubowicz 2018-03-27 09:56:40 -04:00 committed by Greg Kroah-Hartman
parent a1b03156db
commit 30ae624081
1 changed files with 3 additions and 0 deletions
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3
drivers/acpi/acpi_pad.c
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@ -108,6 +108,7 @@ static void round_robin_cpu(unsigned int tsk_index)
cpumask_andnot(tmp, cpu_online_mask, pad_busy_cpus);
if (cpumask_empty(tmp)) {
mutex_unlock(&round_robin_lock);
free_cpumask_var(tmp);
return;
}
for_each_cpu(cpu, tmp) {
@ -125,6 +126,8 @@ static void round_robin_cpu(unsigned int tsk_index)
mutex_unlock(&round_robin_lock);
set_cpus_allowed_ptr(current, cpumask_of(preferred_cpu));
free_cpumask_var(tmp);
}
static void exit_round_robin(unsigned int tsk_index)