linux-kernel - [PATCH] sched: fix double kfree

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Date:	Tue, 06 Jan 2009 17:39:06 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Rusty Russell <rusty@...tcorp.com.au>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] sched: fix double kfree

Impact: fix double kfree in failure path

It's not the responsibility of init_rootdomain() to free root_domain
allocated by alloc_rootdomain().

Signed-off-by: Li Zefan <lizf@...fujitsu.com>
---
 kernel/sched.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index 545c6fc..2bad712 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -6970,7 +6970,7 @@ static int init_rootdomain(struct root_domain *rd, bool bootmem)
 	}
 
 	if (!alloc_cpumask_var(&rd->span, GFP_KERNEL))
-		goto free_rd;
+		goto out;
 	if (!alloc_cpumask_var(&rd->online, GFP_KERNEL))
 		goto free_span;
 	if (!alloc_cpumask_var(&rd->rto_mask, GFP_KERNEL))
@@ -6986,8 +6986,7 @@ free_online:
 	free_cpumask_var(rd->online);
 free_span:
 	free_cpumask_var(rd->span);
-free_rd:
-	kfree(rd);
+out:
 	return -ENOMEM;
 }
 
-- 
1.5.4.rc3

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