[PATCH 3.14 144/158] ocfs2: fix panic on kfree(xattr->name)

From: Greg Kroah-Hartman
Date: Sun May 04 2014 - 12:22:48 EST


3.14-stable review patch. If anyone has any objections, please let me know.

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

From: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>

commit f81c20158f8d5f7938d5eb86ecc42ecc09273ce6 upstream.

Commit 9548906b2bb7 ('xattr: Constify ->name member of "struct xattr"')
missed that ocfs2 is calling kfree(xattr->name). As a result, kernel
panic occurs upon calling kfree(xattr->name) because xattr->name refers
static constant names. This patch removes kfree(xattr->name) from
ocfs2_mknod() and ocfs2_symlink().

Signed-off-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Reported-by: Tariq Saeed <tariq.x.saeed@xxxxxxxxxx>
Tested-by: Tariq Saeed <tariq.x.saeed@xxxxxxxxxx>
Reviewed-by: Srinivas Eeda <srinivas.eeda@xxxxxxxxxx>
Cc: Joel Becker <jlbec@xxxxxxxxxxxx>
Cc: Mark Fasheh <mfasheh@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
fs/ocfs2/namei.c | 2 --
1 file changed, 2 deletions(-)

--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -450,7 +450,6 @@ leave:

brelse(new_fe_bh);
brelse(parent_fe_bh);
- kfree(si.name);
kfree(si.value);

ocfs2_free_dir_lookup_result(&lookup);
@@ -1855,7 +1854,6 @@ bail:

brelse(new_fe_bh);
brelse(parent_fe_bh);
- kfree(si.name);
kfree(si.value);
ocfs2_free_dir_lookup_result(&lookup);
if (inode_ac)


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