linux-kernel - [064/197] ext3: journal all modifications in ext3_xattr_set

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Date:	Thu, 22 Apr 2010 12:08:35 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Eric Sandeen <sandeen@...hat.com>, Jan Kara <jack@...e.cz>,
	maximilian attems <max@...o.at>
Subject: [064/197] ext3: journal all modifications in ext3_xattr_set_handle

2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Eric Sandeen <sandeen@...hat.com>

commit d965736b8cb42ae51ba9c3f13488035a98d025c6 upstream.

ext3_xattr_set_handle() was zeroing out an inode outside
of journaling constraints; this is one of the accesses that
was causing the crc errors in journal replay as seen in
kernel.org bugzilla #14354.

Although ext3 doesn't have the crc issue, modifications
out of journal control are a Bad Thing.

Signed-off-by: Eric Sandeen <sandeen@...hat.com>
Signed-off-by: Jan Kara <jack@...e.cz>
Cc: maximilian attems <max@...o.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 fs/ext3/xattr.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/fs/ext3/xattr.c
+++ b/fs/ext3/xattr.c
@@ -960,6 +960,10 @@ ext3_xattr_set_handle(handle_t *handle,
 	if (error)
 		goto cleanup;
 
+	error = ext3_journal_get_write_access(handle, is.iloc.bh);
+	if (error)
+		goto cleanup;
+
 	if (EXT3_I(inode)->i_state & EXT3_STATE_NEW) {
 		struct ext3_inode *raw_inode = ext3_raw_inode(&is.iloc);
 		memset(raw_inode, 0, EXT3_SB(inode->i_sb)->s_inode_size);
@@ -985,9 +989,6 @@ ext3_xattr_set_handle(handle_t *handle,
 		if (flags & XATTR_CREATE)
 			goto cleanup;
 	}
-	error = ext3_journal_get_write_access(handle, is.iloc.bh);
-	if (error)
-		goto cleanup;
 	if (!value) {
 		if (!is.s.not_found)
 			error = ext3_xattr_ibody_set(handle, inode, &i, &is);


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