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authorJeremie Courreges-Anglas <jca@cvs.openbsd.org>2021-06-21 22:09:15 +0000
committerJeremie Courreges-Anglas <jca@cvs.openbsd.org>2021-06-21 22:09:15 +0000
commit58639d1ec9e15147eb7157c53893506e1fc8cb23 (patch)
tree824720bd58ae741f0e639557459a9ecd08e649f1 /sys/netinet
parent54e5d9906c5ca818f6b57b97addcc7a5b36a710e (diff)
Fix uninitialized variables introduced in rev 1.361
Thankfully clang elided the code in an almost harmless way (at least on amd64 GENERIC.MP). Spotted by chance when building kernels with -Wno-error=uninitialized. ok dlg@ sashan@ bluhm@
Diffstat (limited to 'sys/netinet')
-rw-r--r--sys/netinet/ip_input.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/sys/netinet/ip_input.c b/sys/netinet/ip_input.c
index f80669ff911..3915225657e 100644
--- a/sys/netinet/ip_input.c
+++ b/sys/netinet/ip_input.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ip_input.c,v 1.362 2021/06/03 01:55:52 dlg Exp $ */
+/* $OpenBSD: ip_input.c,v 1.363 2021/06/21 22:09:14 jca Exp $ */
/* $NetBSD: ip_input.c,v 1.30 1996/03/16 23:53:58 christos Exp $ */
/*
@@ -353,6 +353,8 @@ ip_input_if(struct mbuf **mp, int *offp, int nxt, int af, struct ifnet *ifp)
if (m == NULL)
goto bad;
+ ip = mtod(m, struct ip *);
+
#if NCARP > 0
if (carp_lsdrop(ifp, m, AF_INET, &ip->ip_src.s_addr,
&ip->ip_dst.s_addr, (ip->ip_p == IPPROTO_ICMP ? 0 : 1)))
@@ -371,10 +373,11 @@ ip_input_if(struct mbuf **mp, int *offp, int nxt, int af, struct ifnet *ifp)
goto bad;
ip = mtod(m, struct ip *);
- hlen = ip->ip_hl << 2;
pfrdr = (pfrdr != ip->ip_dst.s_addr);
#endif
+ hlen = ip->ip_hl << 2;
+
/*
* Process options and, if not destined for us,
* ship it on. ip_dooptions returns 1 when an