c7b798525b50256c8084215a139fa40b0114bfcc
[smp: Fix SMP function call empty cpu mask race]
use the un-initialized variable cpumask_ipi when
enable CONFIG_CPUMASK_OFFSTACK.
Signed-off-by: Wang YanQing <udkni...@gmail.com>
---
I am sorry for miss it, I just think it when I
was lying on the bed last night. :)
kernel/smp.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kernel/smp.c b/kernel/smp.c
index 7c56aba..a38aa18 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -57,6 +57,9 @@ hotplug_cfd(struct notifier_block *nfb, unsigned long action,
void *hcpu)
if (!zalloc_cpumask_var_node(&cfd->cpumask, GFP_KERNEL,
cpu_to_node(cpu)))
return notifier_from_errno(-ENOMEM);
+ if (!zalloc_cpumask_var_node(&cfd->cpumask_ipi, GFP_KERNEL,
+ cpu_to_node(cpu)))
+ return notifier_from_errno(-ENOMEM);
break;
#ifdef CONFIG_HOTPLUG_CPU
--
1.7.11.1.116.g8228a23
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