linux-ext4 - [PATCH] ext4: don't pass freed handle to ext4_walk_page

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Date:	Tue,  7 Jan 2014 13:08:59 -0500
From:	Theodore Ts'o <tytso@....edu>
To:	Ext4 Developers List <linux-ext4@...r.kernel.org>
Cc:	Theodore Ts'o <tytso@....edu>
Subject: [PATCH] ext4: don't pass freed handle to ext4_walk_page_buffers

This is harmless, since ext4_walk_page_buffers only passes the handle
onto the callback function, and in this call site the function in
question, bput_one(), doesn't actually use the handle.  But there's no
point passing in an invalid handle, and it creates a Coverity warning,
so let's just clean it up.

Addresses-Coverity-Id: #1091168

Signed-off-by: "Theodore Ts'o" <tytso@....edu>
---
 fs/ext4/inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 8454ebe..f33b4eb 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1772,7 +1772,7 @@ static int __ext4_journalled_writepage(struct page *page,
 		ret = err;
 
 	if (!ext4_has_inline_data(inode))
-		ext4_walk_page_buffers(handle, page_bufs, 0, len,
+		ext4_walk_page_buffers(NULL, page_bufs, 0, len,
 				       NULL, bput_one);
 	ext4_set_inode_state(inode, EXT4_STATE_JDATA);
 out:
-- 
1.8.5.rc3.362.gdf10213

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