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authorChen Gang <gang.chen@asianux.com>2013-09-11 14:23:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-11 15:58:21 -0700
commit60c323699bb308404dcb60e8808531e02651578a (patch)
tree978d94c566d4ad2a23ae2fe656a666b61c1f4f4e
parentbc5c8f0783a4a2b43d05155782e71a22a91b26a5 (diff)
downloadlinux-60c323699bb308404dcb60e8808531e02651578a.tar.bz2
kernel/smp.c: free related resources when failure occurs in hotplug_cfd()
When failure occurs in hotplug_cfd(), need release related resources, or will cause memory leak. Signed-off-by: Chen Gang <gang.chen@asianux.com> Acked-by: Wang YanQing <udknight@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--kernel/smp.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/smp.c b/kernel/smp.c
index 449b707fc20d..3bb6ae533cdf 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -48,10 +48,13 @@ hotplug_cfd(struct notifier_block *nfb, unsigned long action, void *hcpu)
cpu_to_node(cpu)))
return notifier_from_errno(-ENOMEM);
if (!zalloc_cpumask_var_node(&cfd->cpumask_ipi, GFP_KERNEL,
- cpu_to_node(cpu)))
+ cpu_to_node(cpu))) {
+ free_cpumask_var(cfd->cpumask);
return notifier_from_errno(-ENOMEM);
+ }
cfd->csd = alloc_percpu(struct call_single_data);
if (!cfd->csd) {
+ free_cpumask_var(cfd->cpumask_ipi);
free_cpumask_var(cfd->cpumask);
return notifier_from_errno(-ENOMEM);
}