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Commit bebc3f01 authored by Lenny Szubowicz's avatar Lenny Szubowicz Committed by Greg Kroah-Hartman
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ACPI: acpi_pad: Fix memory leak in power saving threads 



[ 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: default avatarLenny Szubowicz <lszubowi@redhat.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: default avatarSasha Levin <alexander.levin@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent bc45cf24

drivers/acpi/acpi_pad.c

+3 −0
Original line number Diff line number Diff line
@@ -109,6 +109,7 @@ 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) {
@@ -126,6 +127,8 @@ 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)