Hi All: drivers/infiniband/sw/rxe/rxe_verbs.c: The function to_rdev() could return NULL, but no caller in this file checks the return value but directly dereference them, which seems potentially unsafe. Callers include rxe_query_device(), rxe_query_port(), rxe_query_pkey(), etc. -- Kind Regards, Yizhuo Zhai Computer Science, Graduate Student University of California, Riverside