From owner-freebsd-net@freebsd.org Thu Nov 22 00:22:53 2018
Return-Path: <owner-freebsd-net@freebsd.org>
Delivered-To: freebsd-net@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1])
by mailman.ysv.freebsd.org (Postfix) with ESMTP id 101721104999
for <freebsd-net@mailman.ysv.freebsd.org>;
Thu, 22 Nov 2018 00:22:53 +0000 (UTC)
(envelope-from bugzilla-noreply@freebsd.org)
Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org
[IPv6:2001:1900:2254:206a::50:5])
by mx1.freebsd.org (Postfix) with ESMTP id 9C2CE7E479
for <freebsd-net@freebsd.org>; Thu, 22 Nov 2018 00:22:52 +0000 (UTC)
(envelope-from bugzilla-noreply@freebsd.org)
Received: by mailman.ysv.freebsd.org (Postfix)
id 5F8951104998; Thu, 22 Nov 2018 00:22:52 +0000 (UTC)
Delivered-To: net@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1])
by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3CFB11104997
for <net@mailman.ysv.freebsd.org>; Thu, 22 Nov 2018 00:22:52 +0000 (UTC)
(envelope-from bugzilla-noreply@freebsd.org)
Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org
[IPv6:2001:1900:2254:206a::19:3])
(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits))
(Client CN "mxrelay.ysv.freebsd.org",
Issuer "Let's Encrypt Authority X3" (verified OK))
by mx1.freebsd.org (Postfix) with ESMTPS id CFB807E471
for <net@FreeBSD.org>; Thu, 22 Nov 2018 00:22:51 +0000 (UTC)
(envelope-from bugzilla-noreply@freebsd.org)
Received: from kenobi.freebsd.org (kenobi.freebsd.org
[IPv6:2001:1900:2254:206a::16:76])
(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
(Client did not present a certificate)
by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id 0FF92474F
for <net@FreeBSD.org>; Thu, 22 Nov 2018 00:22:51 +0000 (UTC)
(envelope-from bugzilla-noreply@freebsd.org)
Received: from kenobi.freebsd.org ([127.0.1.118])
by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id wAM0MoNa051444
for <net@FreeBSD.org>; Thu, 22 Nov 2018 00:22:50 GMT
(envelope-from bugzilla-noreply@freebsd.org)
Received: (from www@localhost)
by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id wAM0Mo9n051429
for net@FreeBSD.org; Thu, 22 Nov 2018 00:22:50 GMT
(envelope-from bugzilla-noreply@freebsd.org)
X-Authentication-Warning: kenobi.freebsd.org: www set sender to
bugzilla-noreply@freebsd.org using -f
From: bugzilla-noreply@freebsd.org
To: net@FreeBSD.org
Subject: [Bug 230498] Fatal trap 12: page fault while in kernel mode in
sysctl_dumpentry from sysctl NET_RT_DUMP
Date: Thu, 22 Nov 2018 00:22:50 +0000
X-Bugzilla-Reason: AssignedTo
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: Base System
X-Bugzilla-Component: kern
X-Bugzilla-Version: 11.2-STABLE
X-Bugzilla-Keywords:
X-Bugzilla-Severity: Affects Some People
X-Bugzilla-Who: ian@niw.com.au
X-Bugzilla-Status: New
X-Bugzilla-Resolution:
X-Bugzilla-Priority: ---
X-Bugzilla-Assigned-To: net@FreeBSD.org
X-Bugzilla-Flags:
X-Bugzilla-Changed-Fields:
Message-ID: <bug-230498-7501-w1QnXRsgLn@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-230498-7501@https.bugs.freebsd.org/bugzilla/>
References: <bug-230498-7501@https.bugs.freebsd.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-Rspamd-Queue-Id: 9C2CE7E479
X-Spamd-Result: default: False [1.69 / 15.00];
local_wl_from(0.00)[freebsd.org];
NEURAL_SPAM_LONG(0.42)[0.416,0];
NEURAL_SPAM_MEDIUM(0.36)[0.355,0];
ASN(0.00)[asn:10310, ipnet:2001:1900:2254::/48, country:US];
NEURAL_SPAM_SHORT(0.92)[0.920,0]
X-Rspamd-Server: mx1.freebsd.org
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-net>,
<mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net/>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-net>,
<mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 22 Nov 2018 00:22:53 -0000
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D230498
--- Comment #13 from ian@niw.com.au ---
I did make a pretty naive fix for this shortly after reporting it as the sy=
stem
in question was crashing several times a day. Since applying this I have ha=
s no
further issues with it. It does mean the application querying gets back some
null pointers, but its likely better the application exits (if it does not
check for NULL pointers) than the entire system crashing ?
Index: rtsock.c
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
--- rtsock.c (revision 339318)
+++ rtsock.c (working copy)
@@ -1556,8 +1556,10 @@
rt_mask(rt), &ss);
info.rti_info[RTAX_GENMASK] =3D 0;
if (rt->rt_ifp) {
- info.rti_info[RTAX_IFP] =3D rt->rt_ifp->if_addr->ifa_addr;
- info.rti_info[RTAX_IFA] =3D rt->rt_ifa->ifa_addr;
+ if (rt->rt_ifp->if_addr)
+ info.rti_info[RTAX_IFP] =3D
rt->rt_ifp->if_addr->ifa_addr;
+ if (rt->rt_ifa)
+ info.rti_info[RTAX_IFA] =3D rt->rt_ifa->ifa_addr;
if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
info.rti_info[RTAX_BRD] =3D rt->rt_ifa->ifa_dstaddr;
}
--=20
You are receiving this mail because:
You are the assignee for the bug.=