[src/trunk]: src/sys/external/bsd/ipf/netinet Don't play with the linked list...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f4423324b4b6
branches:  trunk
changeset: 350537:f4423324b4b6
user:      christos <christos%NetBSD.org@localhost>
date:      Fri Jan 13 15:17:00 2017 +0000

description:
Don't play with the linked list while holding only a read lock!

diffstat:

 sys/external/bsd/ipf/netinet/ip_frag.c |  9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diffs (39 lines):

diff -r 3104a5245264 -r f4423324b4b6 sys/external/bsd/ipf/netinet/ip_frag.c
--- a/sys/external/bsd/ipf/netinet/ip_frag.c    Fri Jan 13 14:48:18 2017 +0000
+++ b/sys/external/bsd/ipf/netinet/ip_frag.c    Fri Jan 13 15:17:00 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ip_frag.c,v 1.3 2012/07/22 14:27:51 darrenr Exp $      */
+/*     $NetBSD: ip_frag.c,v 1.4 2017/01/13 15:17:00 christos Exp $     */
 
 /*
  * Copyright (C) 2012 by Darren Reed.
@@ -87,7 +87,7 @@
 #if !defined(lint)
 #if defined(__NetBSD__)
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ip_frag.c,v 1.3 2012/07/22 14:27:51 darrenr Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ip_frag.c,v 1.4 2017/01/13 15:17:00 christos Exp $");
 #else
 static const char sccsid[] = "@(#)ip_frag.c    1.11 3/24/96 (C) 1993-2000 Darren Reed";
 static const char rcsid[] = "@(#)Id: ip_frag.c,v 1.1.1.2 2012/07/22 13:45:17 darrenr Exp";
@@ -726,6 +726,8 @@
                        } else if (off == 0)
                                f->ipfr_seen0 = 1;
 
+#if 0
+                       /* We can't do this, since we only have a read lock! */
                        if (f != table[idx]) {
                                ipfr_t **fp;
 
@@ -745,9 +747,10 @@
                                f->ipfr_hprev = table + idx;
                                table[idx] = f;
                        }
+#endif
 
                        /*
-                        * If we've follwed the fragments, and this is the
+                        * If we've followed the fragments, and this is the
                         * last (in order), shrink expiration time.
                         */
                        if (off == f->ipfr_off) {