Assignment could be NULL, check.

2003-03-21 15:13:29 +00:00 · 2003-03-21 15:13:29 +00:00 · 8d9ce6838f
commit 8d9ce6838f
parent 22af89167b
1 changed files with 1 additions and 1 deletions
--- a/sys/net/bpf.c
+++ b/sys/net/bpf.c
@ -1360,7 +1360,7 @@ bpfdetach(ifp)
 	}

 	/* Interface wasn't attached */
-	if (bp->bif_ifp == NULL) {
+	if ((bp == NULL) || (bp->bif_ifp == NULL)) {
 		mtx_unlock(&bpf_mtx);
 		printf("bpfdetach: %s%d was not attached\n", ifp->if_name,
 		    ifp->if_unit);