[PATCH][cifs-next] cifs: ensure variable rc is initialized at the after_open label

From: Colin King
Date: Wed Aug 28 2019 - 20:00:30 EST

From: Colin Ian King <colin.king@xxxxxxxxxxxxx>

A previous fix added a jump to after_open which now leaves variable
rc in a uninitialized state. A couple of the cases in the following
switch statement do not set variable rc, hence the error check on rc
at the end of the switch statement is reading a garbage value in rc
for those specific cases. Fix this by initializing rc to zero before
the switch statement.

Fixes: 955a9c5b39379 ("cifs: create a helper to find a writeable handle by path name")
Addresses-Coverity: ("Uninitialized scalar variable")
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
fs/cifs/smb2inode.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
index 70342bcd89b4..939fc7b2234c 100644
--- a/fs/cifs/smb2inode.c
+++ b/fs/cifs/smb2inode.c
@@ -116,6 +116,7 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
smb2_set_next_command(tcon, &rqst[num_rqst]);
+ rc = 0;

/* Operation */
switch (command) {