Messages in this thread Patch in this message | | | Date | Tue, 09 Jul 2013 08:43:05 +0800 | From | Chen Gang <> | Subject | [PATCH v2] kernel/smp.c: free related resources when failure occurs in hotplug_cfd() |
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When failure occurs in hotplug_cfd(), need release related resources, or will cause memory leak.
Signed-off-by: Chen Gang <gang.chen@asianux.com> --- kernel/smp.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/kernel/smp.c b/kernel/smp.c index 02a885d..2a3a017 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -49,10 +49,13 @@ 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); } -- 1.7.7.6
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