From: Chen Gang <gang.chen@asianux.com>
To: Wang YanQing <udknight@gmail.com>,
Paul Gortmaker <paul.gortmaker@windriver.com>,
lig.fnst@cn.fujitsu.com, chuansheng.liu@intel.com,
Andrew Morton <akpm@linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: [PATCH v2] kernel/smp.c: free related resources when failure occurs in hotplug_cfd()
Date: Tue, 09 Jul 2013 08:43:05 +0800 [thread overview]
Message-ID: <51DB5C99.50405@asianux.com> (raw)
In-Reply-To: <51DB5A22.9080307@asianux.com>
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
next prev parent reply other threads:[~2013-07-09 0:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-08 8:50 [PATCH] kernel/smp.c: free related resources when failure occurs in hotplug_cfd() Chen Gang
2013-07-08 14:26 ` Paul Gortmaker
2013-07-09 0:25 ` Chen Gang F T
2013-07-09 0:28 ` Wang YanQing
2013-07-09 0:32 ` Chen Gang
2013-07-09 0:43 ` Chen Gang [this message]
2013-07-09 0:46 ` [PATCH v2] " Wang YanQing
2013-07-09 0:46 ` Chen Gang
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