Messages in this thread Patch in this message | | | From | Xiaotian Feng <> | Subject | [PATCH] cpumask: fix cpumask leak in partition_sched_domains | Date | Sat, 27 Jul 2013 15:26:51 +0800 |
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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: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-kernel@vger.kernel.org --- kernel/sched/core.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index b7c32cb..3d6c57b 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; -- 1.7.9.6 (Apple Git-31.1)
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