[CIFS] Print better error when server returns malformed QueryUnixInfo response

Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index bb30455caabc..f33c89c36039 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -3361,6 +3361,9 @@ UnixQPathInfoRetry:
                 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
 
                 if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) {
+                        cERROR(1, ("Malformed FILE_UNIX_BASIC_INFO response.\n"
+                                   "Unix Extensions can be disabled on mount "
+                                   "by specifying the nosfu mount option."));
                         rc = -EIO;      /* bad smb */
                 } else {
                         __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);