Check the return value of cifs_sign_smb[2]

Check the return value of cifs_sign_smb[2]

Signed-off-by: Volker Lendecke <vl@samba.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 5f224e999585..dc2d1b0bba58 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -530,6 +530,11 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
                 return rc;
         }
         rc = cifs_sign_smb2(iov, n_vec, ses->server, &midQ->sequence_number);
+        if (rc) {
+                mutex_unlock(&ses->server->srv_mutex);
+                cifs_small_buf_release(in_buf);
+                goto out;
+        }
 
         midQ->midState = MID_REQUEST_SUBMITTED;
 #ifdef CONFIG_CIFS_STATS2
@@ -718,6 +723,10 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
         }
 
         rc = cifs_sign_smb(in_buf, ses->server, &midQ->sequence_number);
+        if (rc) {
+                mutex_unlock(&ses->server->srv_mutex);
+                goto out;
+        }
 
         midQ->midState = MID_REQUEST_SUBMITTED;
 #ifdef CONFIG_CIFS_STATS2
@@ -948,6 +957,11 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon,
         }
 
         rc = cifs_sign_smb(in_buf, ses->server, &midQ->sequence_number);
+        if (rc) {
+                DeleteMidQEntry(midQ);
+                mutex_unlock(&ses->server->srv_mutex);
+                return rc;
+        }
 
         midQ->midState = MID_REQUEST_SUBMITTED;
 #ifdef CONFIG_CIFS_STATS2