Date: Wed, 28 Mar 2001 05:20:02 -0800 (PST) From: Peter Pentchev <roam@orbitel.bg> To: freebsd-bugs@FreeBSD.org Subject: Re: bin/26168: /usr/bin/netstat gets bus error with -i -a options Message-ID: <200103281320.f2SDK2j05431@freefall.freebsd.org>
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The following reply was made to PR bin/26168; it has been noted by GNATS.
From: Peter Pentchev <roam@orbitel.bg>
To: jim@reptiles.org
Cc: freebsd-gnats-submit@FreeBSD.org
Subject: Re: bin/26168: /usr/bin/netstat gets bus error with -i -a options
Date: Wed, 28 Mar 2001 16:15:24 +0300
On Wed, Mar 28, 2001 at 04:37:13AM -0800, jim@reptiles.org wrote:
>
> >Number: 26168
> >Category: bin
> >Synopsis: /usr/bin/netstat gets bus error with -i -a options
> >Originator: Jim Mercer
> >Release: 4.3-RC
> >Organization:
> Reptilian Research
> >Environment:
> gw# uname -a
> FreeBSD gw.reptiles.org 4.3-RC FreeBSD 4.3-RC #0: Tue Mar 27 18:24:41 EST 2001 root@gw.reptiles.org:/usr/src/sys/compile/GENERIC i386
> >Description:
> /usr/bin/netstat gets bus error with -i -a options
I can confirm this; can you try the attached patch?
(multiaddr holds an address in KVM, not in userspace; dereferencing
it does not give any meaningful value to the user process).
G'luck,
Peter
--
This inert sentence is my body, but my soul is alive, dancing in the sparks of your brain.
Index: src/usr.bin/netstat/if.c
===================================================================
RCS file: /home/ncvs/src/usr.bin/netstat/if.c,v
retrieving revision 1.32.2.5
diff -u -r1.32.2.5 if.c
--- src/usr.bin/netstat/if.c 2001/03/22 13:48:42 1.32.2.5
+++ src/usr.bin/netstat/if.c 2001/03/28 13:14:35
@@ -448,9 +448,10 @@
const char *fmt;
LIST_FOREACH(multiaddr, &ifnet.if_multiaddrs, ifma_link) {
- if (kread(*(u_long *)multiaddr, (char *)&ifma,
+ if (kread((u_long)multiaddr, (char *)&ifma,
sizeof ifma))
break;
+ multiaddr = &ifma;
if (kread((u_long)ifma.ifma_addr, (char *)&msa,
sizeof msa))
break;
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