[PATCH 5/6] lib/cgroup_cpus.c: don't zero cpumasks in group_cpus_evenly() on allocation

Yury Norov posted 6 patches 2 years ago
There is a newer version of this series
[PATCH 5/6] lib/cgroup_cpus.c: don't zero cpumasks in group_cpus_evenly() on allocation
Posted by Yury Norov 2 years ago
nmsk and npresmsk are both allocated with zalloc_cpumask_var(), but they
are initialized by copying later in the code, and so may be allocated
uninitialized.

Signed-off-by: Yury Norov <yury.norov@gmail.com>
---
 lib/group_cpus.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/group_cpus.c b/lib/group_cpus.c
index cded3c8ea63b..c7fcd04c87bf 100644
--- a/lib/group_cpus.c
+++ b/lib/group_cpus.c
@@ -347,10 +347,10 @@ struct cpumask *group_cpus_evenly(unsigned int numgrps)
 	int ret = -ENOMEM;
 	struct cpumask *masks = NULL;
 
-	if (!zalloc_cpumask_var(&nmsk, GFP_KERNEL))
+	if (!alloc_cpumask_var(&nmsk, GFP_KERNEL))
 		return NULL;
 
-	if (!zalloc_cpumask_var(&npresmsk, GFP_KERNEL))
+	if (!alloc_cpumask_var(&npresmsk, GFP_KERNEL))
 		goto fail_nmsk;
 
 	node_to_cpumask = alloc_node_to_cpumask();
-- 
2.40.1