Patchwork [29/93] fs/cifs/cifs_dfs_ref.c: fix potential memory leakage

login
register
mail settings
Submitter Herton Ronaldo Krzesinski
Date Feb. 5, 2013, 10:06 p.m.
Message ID <1360102042-10732-30-git-send-email-herton.krzesinski@canonical.com>
Download mbox | patch
Permalink /patch/218393/
State New
Headers show

Comments

Herton Ronaldo Krzesinski - Feb. 5, 2013, 10:06 p.m.
3.5.7.5 -stable review patch.  If anyone has any objections, please let me know.

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

From: Cong Ding <dinggnu@gmail.com>

commit 10b8c7dff5d3633b69e77f57d404dab54ead3787 upstream.

When it goes to error through line 144, the memory allocated to *devname is
not freed, and the caller doesn't free it either in line 250. So we free the
memroy of *devname in function cifs_compose_mount_options() when it goes to
error.

Signed-off-by: Cong Ding <dinggnu@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
---
 fs/cifs/cifs_dfs_ref.c |    2 ++
 1 file changed, 2 insertions(+)

Patch

diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c
index 6873bb6..2263144 100644
--- a/fs/cifs/cifs_dfs_ref.c
+++ b/fs/cifs/cifs_dfs_ref.c
@@ -226,6 +226,8 @@  compose_mount_options_out:
 compose_mount_options_err:
 	kfree(mountdata);
 	mountdata = ERR_PTR(rc);
+	kfree(*devname);
+	*devname = NULL;
 	goto compose_mount_options_out;
 }