__return_syscall(): verify response structure

2017-06-07 16:57:03 +09:00
parent 446ef0465b
commit 46b48ac59b
1 changed files with 6 additions and 0 deletions
--- a/executer/kernel/mcctrl/syscall.c
+++ b/executer/kernel/mcctrl/syscall.c
@ -1446,6 +1446,12 @@ void __return_syscall(ihk_os_t os, struct ikc_scd_packet *packet,
 	res = ihk_device_map_virtual(ihk_os_to_dev(os),
 			phys, sizeof(*res), NULL, 0);

+	if (!res) {
+		printk("%s: ERROR: invalid response structure address\n",
+			__FUNCTION__);
+		return;
+	}
+
 	/* Map response structure and notify offloading thread */
 	res->ret = ret;
 	res->stid = stid;