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To: dev@httpd.apache.org
Subject: mod_negotiation:find_lang_index() segfault
From: Jeff Trawick <trawick@attglobal.net>
Date: 01 Jan 2002 11:23:02 -0500
Message-ID: <m3ellaavmh.fsf@rdu163-40-092.nc.rr.com>
Lines: 78
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CVS HEAD, request sent to protected page...  my configuration may be
bogus, as I'm trying to migrate a site running Apache 1.3.9 to Apache
2.0...

here is some basic information...  I don't have any time to look into
it at the moment...

Program received signal SIGSEGV, Segmentation fault.
0x40279f11 in find_lang_index (accept_langs=0x8120090, lang=0x81254e8
"de") at mod_negotiation.c:1380
1380            if (!strncmp(lang, accs[i].name,
strlen(accs[i].name))) {
(gdb) bt
#0  0x40279f11 in find_lang_index (accept_langs=0x8120090,
lang=0x81254e8 "de")
    at mod_negotiation.c:1380
#1  0x4027a244 in set_language_quality (neg=0x8122cd8,
variant=0x8122d58) at mod_negotiation.c:1627
#2  0x4027aa5e in best_match (neg=0x8122cd8, pbest=0xbffffa88) at
mod_negotiation.c:2179
#3  0x4027b546 in do_negotiation (r=0x811f558, neg=0x8122cd8,
bestp=0xbffffa88, prefer_scripts=0)
    at mod_negotiation.c:2672
#4  0x4027b6c4 in handle_map_file (r=0x811f558) at
mod_negotiation.c:2781
#5  0x8065bb2 in ap_hook_handler (pf=0x811f558, aszPre=0x808cd98,
aszSucc=0x811f558, nOrder=135390256)
    at config.c:185
#6  0x8066107 in ap_invoke_handler (r=0x811f558) at config.c:332
#7  0x80638a9 in ap_internal_fast_redirect (rr=0x80cf990, r=0x811e430)
at http_request.c:441
#8  0x8063339 in ap_die (type=401, r=0x811e430) at http_request.c:195
#9  0x806345f in check_pipeline_flush (r=0x811e430) at
http_request.c:261
#10 0x805f751 in chunk_filter (f=0x8119d00, b=0x808cd98) at
http_core.c:253
#11 0x806d7ce in ap_hook_process_connection (pf=0x8119d00,
aszPre=0x808cd98, aszSucc=0x8119d00,
    nOrder=-1073742920) at connection.c:84
#12 0x806da8b in ap_lingering_close (c=0x8119d00) at connection.c:208
#13 0x806480b in child_main (child_num_arg=0) at prefork.c:694
#14 0x806493b in make_child (s=0x8097fa0, slot=0) at prefork.c:755
#15 0x80649a1 in make_child (s=0x5, slot=134794648) at prefork.c:800
#16 0x8064cf6 in ap_mpm_run (_pconf=0x80966d8, plog=0x80bc770,
s=0x8097fa0) at prefork.c:996
#17 0x8069d17 in main (argc=1, argv=0xbffffce4) at main.c:448
(gdb) p lang
$1 = 0x81254e8 "de"
(gdb) p i
$2 = 6
(gdb) p accs[i]
Cannot access memory at address 0x5f.
(gdb) p accs
$3 = (accept_rec *) 0xffffffff
(gdb)

Here is accept_langs:

(gdb) p *accept_langs
$7 = {pool = 0x811e3f8, elt_size = 4, nelts = 23, nalloc = 32, elts = 
0x81200a8 

Here is info on the map file:

(gdb) p *map
$5 = {cntxt = 0x811e3f8, filedes = 11,
  fname = 0x8123a20
"/usr/local/apache2/error/HTTP_UNAUTHORIZED.html.var", flags = 129,
eof_hit = 1,
  pipe = 0, timeout = -1, buffered = 1, blocking = BLK_ON, ungetchar =
-1,
  buffer = 0x8124480 "Content-language: de\nContent-type:
text/html\nBody:----------de--\n<!--#set var=\"TITLE\" value=\"Authentikation fehlgeschlagen!\" -->\n<!--#include virtual=\"include/top.html\" -->\n\n    Der Server konnte nich"..., bufpos = 3143, dataRead = 3143, direction = 0, filePtr = 3143,
  thlock = 0x8125480}
-- 
Jeff Trawick | trawick@attglobal.net | PGP public key at web site:
       http://www.geocities.com/SiliconValley/Park/9289/
             Born in Roswell... married an alien...