* [PATCH] smp:Fix use un-initialized cpumask_ipi
@ 2013-01-28 3:30 Wang YanQing
0 siblings, 0 replies; only message in thread
From: Wang YanQing @ 2013-01-28 3:30 UTC (permalink / raw)
To: mingo
Cc: torvalds, linux-kernel, linux-tip-commits, akpm, hpa, paulmck,
stable, tglx
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 <udknight@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
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2013-01-28 3:30 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-01-28 3:30 [PATCH] smp:Fix use un-initialized cpumask_ipi Wang YanQing
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox