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| author | Xiaotian Feng <xtfeng@gmail.com> | 2013-08-06 12:06:42 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-08-16 15:44:27 (GMT) |
| commit | c8d2d47a9cbb4222ae4e993aa0e3703430c8193c (patch) | |
| tree | d522413abcf9c69d3ceef66e7dc4708560812645 | |
| parent | d3ec3a1fd08f705d1b319db4113590944bcde749 (diff) | |
| download | linux-c8d2d47a9cbb4222ae4e993aa0e3703430c8193c.tar.xz | |
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>
| -rw-r--r-- | kernel/sched/core.c | 5 |
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; |