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Subject[PATCH] ACPI: acpi_pad: Fix memory leak in power saving threads
Date
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>
---
drivers/acpi/acpi_pad.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
index 7544310..552c1f7 100644
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -110,6 +110,7 @@ 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) {
@@ -127,6 +128,8 @@ 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)
--
1.8.3.1
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