linux-kernel - [f2fs-dev] [PATCH] f2fs: avoid to use a NULL point in destroy_segment

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Date:	Wed, 06 Nov 2013 09:12:04 +0800
From:	Chao Yu <chao2.yu@...sung.com>
To:	??? <jaegeuk.kim@...sung.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net,
	谭姝 <shu.tan@...sung.com>
Subject: [f2fs-dev] [PATCH] f2fs: avoid to use a NULL point in
 destroy_segment_manager

A NULL point should avoid to be used in destroy_segment_manager after allocating memory fail for f2fs_sm_info.

Signed-off-by: Chao Yu <chao2.yu@...sung.com>
---
 fs/f2fs/segment.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 3d4d5fc..ff363e6
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1744,6 +1744,8 @@ static void destroy_sit_info(struct f2fs_sb_info *sbi)
 void destroy_segment_manager(struct f2fs_sb_info *sbi)
 {
 	struct f2fs_sm_info *sm_info = SM_I(sbi);
+	if (!sm_info)
+		return;
 	destroy_dirty_segmap(sbi);
 	destroy_curseg(sbi);
 	destroy_free_segmap(sbi);
-- 
1.7.9.5

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