linux-kernel - [PATCH] sched: add sanity check in partition_sched

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Message-ID: <491005C7.2080608@cn.fujitsu.com>
Date:	Tue, 04 Nov 2008 16:20:23 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: [PATCH] sched: add sanity check in partition_sched_domains()

It's wrong to make dattr_new = NULL if doms_new == NULL, it introduces
memory leak if dattr_new != NULL. Fortunately dattr_new is always NULL
in this case. So remove the code and add a sanity check.

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

diff --git a/kernel/sched.c b/kernel/sched.c
index baa7e4b..0dcda75 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -7787,7 +7787,7 @@ match1:
 		ndoms_cur = 0;
 		doms_new = &fallback_doms;
 		cpus_andnot(doms_new[0], cpu_online_map, cpu_isolated_map);
-		dattr_new = NULL;
+		BUG_ON(dattr_new);
 	}
 
 	/* Build new domains */
-- 
1.5.4.rc3
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