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From: Jim Jagielski <jim@jaguNET.com>
Message-Id: <200208262214.SAA24360@devsys.jaguNET.com>
Subject: Re: Segfault in ap_vformatter on httpd startup
To: rbb@apache.org
Date: Mon, 26 Aug 2002 18:14:42 -0400 (EDT)
Cc: jerenkrantz@apache.org (Justin Erenkrantz), dev@apr.apache.org
Reply-To: jim@jaguNET.com
In-Reply-To: <Pine.LNX.4.21.0208261802550.12208-100000@shell.ntrnet.net> from
 "rbb@apache.org" at Aug 26, 2002 06:04:28 PM
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I may have some cycles tonight as well...

rbb@apache.org wrote:
> 
> 
> I have done just enough looking at this problem to be thoroughly=20
> confused.  Basically, if I run test/teststr, I get the seg fault, but if
> I run test/.libs/teststr, everything just works.  I have re-built
> multiple times, so I am at a complete loss here.  I'll try to look at this
> later tonight when I get home.
> 
> Ryan
> 
> On Mon, 26 Aug 2002, Justin Erenkrantz wrote:
> 
> > Something is hosed (yes, I did a clean rebuild).
> >=20
> > I don't really trust this stack trace as ap_log_pid does get a
> > filename on entry, so I expect that the stack is smashed.  I
> > also ran teststr and that generates a 'bus error.'
> >=20
> > I gotta run out the door right now.  If no one fixes it by the
> > time I get back, I'll bring out the cluebat and apply it
> > liberally.  -- justin
> >=20
> > Program received signal EXC_BAD_ACCESS, Could not access memory.
> > 0x00662e84 in apr_vformatter (flush_func=3D0x663c5c <snprintf_flush>, vbu=
> ff=3D0xbfffd6d0, fmt=3D0x68118 "[%s] ", ap=3D0xbfffd714 "") at /Users/jeren=
> k/cvs-apache/httpd-2.0/srclib/apr/strings/apr_snprintf.c:730
> > 730                 INS_CHAR(*fmt, sp, bep, cc);
> > #1  0x00663cc4 in apr_snprintf (buf=3D0x663c5c "8`=FF=FFN\200", len=3D816=
> 5, format=3D0x5b <Address 0x5b out of bounds>) at /Users/jerenk/cvs-apache/=
> httpd-2.0/srclib/apr/strings/apr_snprintf.c:1268
> > #2  0x0003d7ec in log_error_core (file=3D0x68000 "/Users/jerenk/cvs-apach=
> e/httpd-2.0/server/log.c", line=3D607, level=3D4, status=3D0, s=3D0x0, r=3D=
> 0x0, pool=3D0x2b3658, fmt=3D0x4eed20 "pid file /Users/jerenk/apache-2.0-cvs=
> /logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?", a=
> rgs=3D0xbffff880 "") at /Users/jerenk/cvs-apache/httpd-2.0/server/log.c:455
> > #3  0x0003d9d4 in ap_log_perror (file=3D0x663c5c "8`=FF=FFN\200", line=3D=
> -1073752368, level=3D91, status=3D-1073752300, p=3D0x5b, fmt=3D0x30 <Addres=
> s 0x30 out of bounds>) at /Users/jerenk/cvs-apache/httpd-2.0/server/log.c:5=
> 45
> > #4  0x0003db68 in ap_log_pid (p=3D0x2b3658, filename=3D0x2dc3 "") at /Use=
> rs/jerenk/cvs-apache/httpd-2.0/server/log.c:607
> > #5  0x000329cc in ap_mpm_run (_pconf=3D0x2b3658, plog=3D0xbfffd6d0, s=3D0=
> x2b60f8) at /Users/jerenk/cvs-apache/httpd-2.0/server/mpm/prefork/prefork.c=
> :954
> > #6  0x00034460 in main (argc=3D2, argv=3D0xbffffb20) at /Users/jerenk/cvs=
> -apache/httpd-2.0/server/main.c:645
> > #7  0x00002210 in _start (argc=3D2, argv=3D0xbffffb20, envp=3D0xbffffb2c)=
>  at /SourceCache/Csu/Csu-45/crt.c:267
> > #8  0x00002090 in start ()
> >=20
> > teststr bt:
> > Program received signal EXC_BAD_ACCESS, Could not access memory.
> > 0x000adcd4 in apr_snprintf (buf=3D0xffffffff <Address 0xffffffff out of b=
> ounds>, len=3D100, format=3D0x73 <Address 0x73 out of bounds>) at /Users/je=
> renk/cvs-apache/httpd-2.0/srclib/apr/strings/apr_snprintf.c:1271
> > 1271            *vbuff.curpos =3D '\0';
> > (gdb) bt
> > #0  0x000adcd4 in apr_snprintf (buf=3D0xffffffff <Address 0xffffffff out =
> of bounds>, len=3D100, format=3D0x73 <Address 0x73 out of bounds>) at /User=
> s/jerenk/cvs-apache/httpd-2.0/srclib/apr/strings/apr_snprintf.c:1271
> > #1  0x00002920 in test_snprintf (p=3D0xffffffff) at /Users/jerenk/cvs-apa=
> che/httpd-2.0/srclib/apr/test/teststr.c:138
> > #2  0x00002a2c in main (argc=3D-1, argv=3D0xbffff8a0) at /Users/jerenk/cv=
> s-apache/httpd-2.0/srclib/apr/test/teststr.c:163
> > #3  0x000024f4 in _start (argc=3D1, argv=3D0xbffffa9c, envp=3D0xbffffaa4)=
>  at /SourceCache/Csu/Csu-45/crt.c:267
> > #4  0x00002374 in start ()
> >=20
> 
> --=20
> 
> ___________________________________________________________________________=
> ____
> Ryan Bloom                        =09rbb@apache.org
> 550 Jean St
> Oakland CA 94610
> ---------------------------------------------------------------------------=
> ----
> 


-- 
===========================================================================
   Jim Jagielski   [|]   jim@jaguNET.com   [|]   http://www.jaguNET.com/
      "A society that will trade a little liberty for a little order
             will lose both and deserve neither" - T.Jefferson