From: bluhm <bluhm@openbsd.org>
Date: Mon, 16 May 2022 13:31:19 +0000 (+0000)
Subject: pfi_kif_alloc() may be called with M_NOWAIT.  Add NULL check to
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=b8dc7befe550998daf7d1cc53cdb4cafbf337ba3;p=openbsd

pfi_kif_alloc() may be called with M_NOWAIT.  Add NULL check to
handle malloc(9) failure.
from markus@; OK sashan@
---

diff --git a/sys/net/pf_if.c b/sys/net/pf_if.c
index e5dd4ad963b..dd1b11d44af 100644
--- a/sys/net/pf_if.c
+++ b/sys/net/pf_if.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pf_if.c,v 1.104 2022/04/29 09:55:43 mbuhl Exp $ */
+/*	$OpenBSD: pf_if.c,v 1.105 2022/05/16 13:31:19 bluhm Exp $ */
 
 /*
  * Copyright 2005 Henning Brauer <henning@openbsd.org>
@@ -93,6 +93,8 @@ pfi_kif_alloc(const char *kif_name, int mflags)
 	struct pfi_kif *kif;
 
 	kif = malloc(sizeof(*pfi_all), PFI_MTYPE, mflags|M_ZERO);
+	if (kif == NULL)
+		return (NULL);
 	strlcpy(kif->pfik_name, kif_name, sizeof(kif->pfik_name));
 	kif->pfik_tzero = gettime();
 	TAILQ_INIT(&kif->pfik_dynaddrs);