criu: lazy-pages: take care of possible NULL pointer dereference

Fix CID 163485 (#2 of 2): Dereference null return value (NULL_RETURNS) 7. dereference: Dereferencing a pointer that might be null dest when calling handle_user_fault. Signed-off-by: Mike Rapoport <[email protected]> Signed-off-by: Pavel Emelyanov <[email protected]>
avagin · Aug 15, 2016 · 5121500 · 5121500
1 parent c90e40b
commit 5121500
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/criu/uffd.c b/criu/uffd.c
@@ -730,6 +730,7 @@ static int handle_requests(int epollfd, struct epoll_event *events)
 
 		for (i = 0; i < ret; i++) {
 			lpi = uffd_to_lpi(events[i].data.fd);
+			BUG_ON(!lpi);
 			ret = handle_user_fault(lpi, dest);
 			if (ret < 0)
 				goto out;