Date: Fri, 10 Sep 1999 06:36:07 +0100 From: Brian Somers <brian@Awfulhak.org> To: "Andy V. Oleynik" <andyo@prime.net.ua> Cc: Brian Somers <brian@Awfulhak.org>, freebsd-isp@FreeBSD.ORG, freebsd-questions@FreeBSD.ORG Subject: Re: ppp crashed with SIG 10. Message-ID: <199909100536.GAA35580@keep.lan.Awfulhak.org> In-Reply-To: Your message of "Thu, 09 Sep 1999 18:56:48 %2B0300." <37D7D8BF.28441431@prime.net.ua>
next in thread | previous in thread | raw e-mail | index | archive | help
This looks like the results of using -O with -g... gdb has probably =
optimised out some of the variables.
Maybe ``p handler[0]@NSIG'' would be interesting, or maybe sig really =
is corrupt... You could try log_Printf()ing it in the source to find =
out.
The compiler flags look ok :-/
Does this happen immediately or does there seem to be any pattern to =
when it happens ?
> Now one more interesting SIG 10:
> =
> # gdb ppp /ppp2.core
> GNU gdb 4.18
> [..]
> #0 0x809c162 in ?? ()
> (gdb) bt
> #0 0x809c162 in ?? ()
> #1 0x806c13c in sig_Handle () at sig.c:101
> #2 0x80656a2 in DoLoop (bundle=3D0x8080070) at main.c:532
> #3 0x8065399 in main (argc=3D3, argv=3D0xbfbfde10) at main.c:448
> #4 0x804ac59 in _start ()
> (gdb) up
> #1 0x806c13c in sig_Handle () at sig.c:101
> 101 (*handler[sig])(sig + 1);
> (gdb) display sig
> (gdb) display
> 1: sig =3D 134852656
> But I really dont understand how it could happen (NSIG=3D32 8o)
> (gdb) list
> 96 for (sig =3D 0; sig < NSIG; sig++)
> 97 if (caused[sig]) {
> 98 caused[sig]--;
> 99 got++;
> 100 result++;
> 101 (*handler[sig])(sig + 1);
> 102 }
> 103 } while (got);
> 104 }
> 105
> (gdb) output got
> 134857104 # Woops !!!!
> (gdb) output result
> 1 # Only reasonable value
> (gdb) output caused[sig]
> Cannot access memory at address 0x282ffce0. # Of course :)
> (gdb)
> Can it be any compiler's flags problem? Final line of make is:
> cc -O -pipe -Wall -DHAVE_DES -I. -I../libhack -o ppp acf.o arp.o asy=
nc.o
> auth.o bundle.o cbcp.o ccp.o chap.o chat.o command.o datalink.o deflate=
=2Eo
> defs.o exec.o filter.o fsm.o hdlc.o id.o iface.o ip.o ipcp.o iplist.o l=
cp.o
> link.o log.o lqr.o main.o mbuf.o mp.o pap.o physical.o pred.o probe.o
> prompt.o proto.o route.o server.o sig.o slcompress.o sync.o systems.o t=
cp.o
> throughput.o timer.o tty.o tun.o udp.o vjcomp.o alias_cmd.o chap_ms.o
> radius.o uucplock.o -lcrypt -lmd -lutil -lz -L../libhack -lalias -ldes=
> -lradius
> making objfiles is similar.
> # uname -a
> FreeBSD hostname 3.2-STABLE FreeBSD 3.2-STABLE #3: Tue Aug 31 13:52:41 =
EEST
> 1999 root@hostname:/usr/3.2/src/sys/compile/GATE i386
> # cc -v
> gcc version 2.7.2.3
> #
> Or I missunderstand smth?
> =
> To Mr. Sommers - excuse me my bad manner :| I hope I'm giving U enough =
info?
> Brian Somers wrote:
> =
> > > Hello, everybody,
> > > on dialup server ppp sometimes crashed with signal 10.
> > > backtrace shows:
> > > # gdb ppp3 ppp3.core
> > > GNU gdb 4.18
> > > Copyright 1998 Free Software Foundation, Inc.
> > > GDB is free software, covered by the GNU General Public License, an=
d you
> > > are
> > > welcome to change it and/or distribute copies of it under certain
> > > conditions.
> > > Type "show copying" to see the conditions.
> > > There is absolutely no warranty for GDB. Type "show warranty" for
> > > details.
> > > This GDB was configured as "i386-unknown-freebsd"...
> > > (no debugging symbols found)...
> > > Core was generated by `ppp3'.
> > > Program terminated with signal 10, Bus error.
> > > #0 0x809c162 in ?? ()
> > > (gdb) backtrace
> > > #0 0x809c162 in ?? ()
> > > #1 0x806bf80 in getsockname ()
> > > #2 0x80654e6 in getsockname ()
> > > #3 0x80651dd in getsockname ()
> > > #4 0x804ab1d in getsockname ()
> > > (gdb)
> > >
> > > Only place where ppp calls getsockname is server.c (TCP interface =
to
> > > ppp?).
> > > Does anyone expirience this behavour? Some clue?
> >
> > <rant>
> > I don't understand people that do this.... How about putting debug
> > symbols in ppp, or at least saying things like ``I have the default
> > /etc/sevices'' so that people don't have to ask the same questions
> > that I did.
> >
> > I'd consider exchanging several messages with someone and then
> > stopping the conversation and posting the original mail somewhere
> > else to be the height of bad manners.
> > </rant>
> >
> =
> --
> WBW Andy V. Oleynik (When U work in virtual office
> prime.net.ua's U have good chance to obtain
> system administrator virtual money =F6%-)
> +380442448363
-- =
Brian <brian@Awfulhak.org> <brian@FreeBSD.org>
<http://www.Awfulhak.org>; <brian@OpenBSD.org>
Don't _EVER_ lose your sense of humour ! <brian@FreeBSD.org.uk>
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199909100536.GAA35580>