cifs: add check for kmalloc in parse_dacl

Exit from parse_dacl if no memory returned from the call to kmalloc.

Signed-off-by: Stanislav Fomichev <kernel@fomichev.me>
Signed-off-by: Steve French <sfrench@us.ibm.com>

diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 1e7636b..beeebf1 100644 (file)
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -372,6 +372,10 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl,
 
                ppace = kmalloc(num_aces * sizeof(struct cifs_ace *),
                                GFP_KERNEL);
+               if (!ppace) {
+                       cERROR(1, "DACL memory allocation error");
+                       return;
+               }
 
                for (i = 0; i < num_aces; ++i) {
                        ppace[i] = (struct cifs_ace *) (acl_base + acl_size);