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authorXiaotian Feng <xtfeng@gmail.com>2013-08-06 20:06:42 +0800
committerIngo Molnar <mingo@kernel.org>2013-08-16 17:44:27 +0200
commitc8d2d47a9cbb4222ae4e993aa0e3703430c8193c (patch)
treed522413abcf9c69d3ceef66e7dc4708560812645 /kernel/sched
parentd3ec3a1fd08f705d1b319db4113590944bcde749 (diff)
downloadop-kernel-dev-c8d2d47a9cbb4222ae4e993aa0e3703430c8193c.zip
op-kernel-dev-c8d2d47a9cbb4222ae4e993aa0e3703430c8193c.tar.gz
cpumask: Fix cpumask leak in partition_sched_domains()
If doms_new is NULL, partition_sched_domains() will reset ndoms_cur to 0, and free old sched domains with free_sched_domains(doms_cur, ndoms_cur). As ndoms_cur is 0, the cpumask will not be freed. Signed-off-by: Xiaotian Feng <xtfeng@gmail.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: linux-kernel@vger.kernel.org Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1375790802-11857-1-git-send-email-xtfeng@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
-rw-r--r--kernel/sched/core.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index b7415cf..cf8f100 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -6184,8 +6184,9 @@ match1:
;
}
+ n = ndoms_cur;
if (doms_new == NULL) {
- ndoms_cur = 0;
+ n = 0;
doms_new = &fallback_doms;
cpumask_andnot(doms_new[0], cpu_active_mask, cpu_isolated_map);
WARN_ON_ONCE(dattr_new);
@@ -6193,7 +6194,7 @@ match1:
/* Build new domains */
for (i = 0; i < ndoms_new; i++) {
- for (j = 0; j < ndoms_cur && !new_topology; j++) {
+ for (j = 0; j < n && !new_topology; j++) {
if (cpumask_equal(doms_new[i], doms_cur[j])
&& dattrs_equal(dattr_new, i, dattr_cur, j))
goto match2;
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