linux-kernel - [PATCH 1/2] fs: logfs NULL pointer check added

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Date:	Tue, 27 Nov 2012 16:54:58 +0530
From:	Abhijit Pawar <abhi.c.pawar@...il.com>
To:	Joern Engel <joern@...fs.org>,
	Prasad Joshi <prasadjoshi.linux@...il.com>, logfs@...fs.org
Cc:	linux-kernel@...r.kernel.org,
	Abhijit Pawar <abhi.c.pawar@...il.com>
Subject: [PATCH 1/2] fs: logfs NULL pointer check added

This patch fixes  Bug 49921 - Missing NULL check of return value of logfs_get_write_page() in function btree_write_block()

Signed-off-by: Abhijit Pawar <abhi.c.pawar@...il.com>
---
 fs/logfs/readwrite.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/fs/logfs/readwrite.c b/fs/logfs/readwrite.c
index e1a3b6b..53596ce 100644
--- a/fs/logfs/readwrite.c
+++ b/fs/logfs/readwrite.c
@@ -2202,6 +2202,7 @@ void btree_write_block(struct logfs_block *block)
 
 	inode = logfs_safe_iget(block->sb, block->ino, &cookie);
 	page = logfs_get_write_page(inode, block->bix, block->level);
+	BUG_ON(!page);
 
 	err = logfs_readpage_nolock(page);
 	BUG_ON(err);
-- 
1.7.7.6

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