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authorAlexander Bluhm <bluhm@cvs.openbsd.org>2018-01-23 21:06:48 +0000
committerAlexander Bluhm <bluhm@cvs.openbsd.org>2018-01-23 21:06:48 +0000
commit4d9990281351206a2a8178da509c0d2169d2ab11 (patch)
tree8a2fd3c5bcfd2d385eef04200a791b427e1a5456 /sys
parent1fc1cafb96de24c4d27854efc3ccfb8e6dd1e292 (diff)
Although it is a dead store here, always reassign the tcpcb after
calling tcp_close(), tcp_drop(), and tcp_disconnect(). Then no freed memory can be used after closing a TCP connection. OK mikeb@ mpi@
Diffstat (limited to 'sys')
-rw-r--r--sys/netinet/tcp_timer.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/netinet/tcp_timer.c b/sys/netinet/tcp_timer.c
index 1260d14d53e..acacbe7dcf8 100644
--- a/sys/netinet/tcp_timer.c
+++ b/sys/netinet/tcp_timer.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tcp_timer.c,v 1.60 2017/10/29 14:56:36 florian Exp $ */
+/* $OpenBSD: tcp_timer.c,v 1.61 2018/01/23 21:06:47 bluhm Exp $ */
/* $NetBSD: tcp_timer.c,v 1.14 1996/02/13 23:44:09 christos Exp $ */
/*
@@ -218,7 +218,7 @@ tcp_timer_rexmt(void *arg)
if (++tp->t_rxtshift > TCP_MAXRXTSHIFT) {
tp->t_rxtshift = TCP_MAXRXTSHIFT;
tcpstat_inc(tcps_timeoutdrop);
- (void)tcp_drop(tp, tp->t_softerror ?
+ tp = tcp_drop(tp, tp->t_softerror ?
tp->t_softerror : ETIMEDOUT);
goto out;
}