1 files changed, 1 insertions, 1 deletions

diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c
index f9e766f464be..b2aff0c6f22c 100644
--- a/fs/cifs/smb2file.c
+++ b/fs/cifs/smb2file.c
@@ -260,7 +260,7 @@ smb2_push_mandatory_locks(struct cifsFileInfo *cfile)
          * and check it for zero before using.
          */
         max_buf = tlink_tcon(cfile->tlink)->ses->server->maxBuf;
-        if (!max_buf) {
+        if (max_buf < sizeof(struct smb2_lock_element)) {
                 free_xid(xid);
                 return -EINVAL;
         }