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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 37770] - proxy: error reading status line from remote server (null)
Date Sat, 03 Dec 2005 20:51:08 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=37770





------- Additional Comments From rpluem@apache.org  2005-12-03 21:51 -------
Merge from Christophe's mail to the dev list
(http://mail-archives.apache.org/mod_mbox/httpd-dev/200511.mbox/ajax/%3c4388AC09.2000907@nbux.com%3e):

Hi all,

i have just tried with the last 2.1.10 and i have the same problem :

1. in error logs :
[Sat Nov 26 19:29:55 2005] [error] [client 10.133.2.63] proxy: error reading
status line from remote server (null), referer:
http://portail.polen.sofinco.fr/polen/
[Sat Nov 26 19:29:55 2005] [error] [client 10.133.2.63] proxy: Error reading
from remote server returned by /polen/images/passe.gif, referer:
http://portail.polen.sofinco.fr/polen/
[Sat Nov 26 19:29:56 2005] [notice] child pid 25976 exit signal Segmentation
fault (11), possible coredump in /tmp


2. i used gdb to get a trace :
gdb /opt/apache21/bin/httpd /tmp/core.25976
GNU gdb 6.3-debian
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and 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-linux"...Using host libthread_db library
"/lib/tls/libthread_db.so.1".

Core was generated by `/opt/apache21/bin/httpd -k start'.
Program terminated with signal 11, Segmentation fault.

warning: current_sos: Can't read pathname for load map: Input/output error

Reading symbols from /lib/tls/libm.so.6...done.
Loaded symbols for /lib/tls/libm.so.6
Reading symbols from /opt/apache21/lib/libaprutil-1.so.0...done.
Loaded symbols for /opt/apache21/lib/libaprutil-1.so.0
Reading symbols from /usr/lib/libdb-4.3.so...done.
Loaded symbols for /usr/lib/libdb-4.3.so
Reading symbols from /usr/lib/libexpat.so.1...done.
Loaded symbols for /usr/lib/libexpat.so.1
Reading symbols from /opt/apache21/lib/libapr-1.so.0...done.
Loaded symbols for /opt/apache21/lib/libapr-1.so.0
Reading symbols from /lib/tls/librt.so.1...done.
Loaded symbols for /lib/tls/librt.so.1
Reading symbols from /lib/tls/libcrypt.so.1...done.
Loaded symbols for /lib/tls/libcrypt.so.1
Reading symbols from /lib/tls/libpthread.so.0...done.
Loaded symbols for /lib/tls/libpthread.so.0
Reading symbols from /lib/tls/libdl.so.2...done.
Loaded symbols for /lib/tls/libdl.so.2
Reading symbols from /lib/tls/libc.so.6...done.
Loaded symbols for /lib/tls/libc.so.6
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /lib/tls/libnss_compat.so.2...done.
Loaded symbols for /lib/tls/libnss_compat.so.2
Reading symbols from /lib/tls/libnsl.so.1...done.
Loaded symbols for /lib/tls/libnsl.so.1
Reading symbols from /lib/tls/libnss_nis.so.2...done.
Loaded symbols for /lib/tls/libnss_nis.so.2
Reading symbols from /lib/tls/libnss_files.so.2...done.
Loaded symbols for /lib/tls/libnss_files.so.2
Reading symbols from /opt/apache21/modules/mod_authz_host.so...done.
Loaded symbols for /opt/apache21/modules/mod_authz_host.so
Reading symbols from /opt/apache21/modules/mod_dumpio.so...done.
Loaded symbols for /opt/apache21/modules/mod_dumpio.so
Reading symbols from /opt/apache21/modules/mod_include.so...done.
Loaded symbols for /opt/apache21/modules/mod_include.so
Reading symbols from /opt/apache21/modules/mod_log_config.so...done.
Loaded symbols for /opt/apache21/modules/mod_log_config.so
Reading symbols from /opt/apache21/modules/mod_logio.so...done.
Loaded symbols for /opt/apache21/modules/mod_logio.so
Reading symbols from /opt/apache21/modules/mod_env.so...done.
Loaded symbols for /opt/apache21/modules/mod_env.so
Reading symbols from /opt/apache21/modules/mod_expires.so...done.
Loaded symbols for /opt/apache21/modules/mod_expires.so
Reading symbols from /opt/apache21/modules/mod_headers.so...done.
Loaded symbols for /opt/apache21/modules/mod_headers.so
Reading symbols from /opt/apache21/modules/mod_ident.so...done.
Loaded symbols for /opt/apache21/modules/mod_ident.so
Reading symbols from /opt/apache21/modules/mod_usertrack.so...done.
Loaded symbols for /opt/apache21/modules/mod_usertrack.so
Reading symbols from /opt/apache21/modules/mod_unique_id.so...done.
Loaded symbols for /opt/apache21/modules/mod_unique_id.so
Reading symbols from /opt/apache21/modules/mod_setenvif.so...done.
Loaded symbols for /opt/apache21/modules/mod_setenvif.so
Reading symbols from /opt/apache21/modules/mod_version.so...done.
Loaded symbols for /opt/apache21/modules/mod_version.so
Reading symbols from /opt/apache21/modules/mod_proxy.so...done.
Loaded symbols for /opt/apache21/modules/mod_proxy.so
Reading symbols from /opt/apache21/modules/mod_proxy_connect.so...done.
Loaded symbols for /opt/apache21/modules/mod_proxy_connect.so
Reading symbols from /opt/apache21/modules/mod_proxy_http.so...done.
Loaded symbols for /opt/apache21/modules/mod_proxy_http.so
Reading symbols from /opt/apache21/modules/mod_proxy_balancer.so...done.
Loaded symbols for /opt/apache21/modules/mod_proxy_balancer.so
Reading symbols from /opt/apache21/modules/mod_mime.so...done.
Loaded symbols for /opt/apache21/modules/mod_mime.so
Reading symbols from /opt/apache21/modules/mod_status.so...done.
Loaded symbols for /opt/apache21/modules/mod_status.so
Reading symbols from /opt/apache21/modules/mod_autoindex.so...done.
Loaded symbols for /opt/apache21/modules/mod_autoindex.so
Reading symbols from /opt/apache21/modules/mod_asis.so...done.
Loaded symbols for /opt/apache21/modules/mod_asis.so
Reading symbols from /opt/apache21/modules/mod_info.so...done.
Loaded symbols for /opt/apache21/modules/mod_info.so
Reading symbols from /opt/apache21/modules/mod_vhost_alias.so...done.
Loaded symbols for /opt/apache21/modules/mod_vhost_alias.so
Reading symbols from /opt/apache21/modules/mod_dir.so...done.
Loaded symbols for /opt/apache21/modules/mod_dir.so
Reading symbols from /opt/apache21/modules/mod_alias.so...done.
Loaded symbols for /opt/apache21/modules/mod_alias.so
Reading symbols from /opt/apache21/modules/mod_rewrite.so...done.
Loaded symbols for /opt/apache21/modules/mod_rewrite.so
Reading symbols from /opt/apache21/modules/mod_cache.so...done.
Loaded symbols for /opt/apache21/modules/mod_cache.so
Reading symbols from /opt/apache21/modules/mod_mem_cache.so...done.
Loaded symbols for /opt/apache21/modules/mod_mem_cache.so
Reading symbols from /opt/apache21/modules/mod_ssl.so...done.
Loaded symbols for /opt/apache21/modules/mod_ssl.so
Reading symbols from /usr/lib/i686/cmov/libssl.so.0.9.8...done.
Loaded symbols for /usr/lib/i686/cmov/libssl.so.0.9.8
Reading symbols from /usr/lib/i686/cmov/libcrypto.so.0.9.8...done.
Loaded symbols for /usr/lib/i686/cmov/libcrypto.so.0.9.8
Reading symbols from /usr/lib/libz.so.1...done.
Loaded symbols for /usr/lib/libz.so.1
Reading symbols from /lib/libgcc_s.so.1...done.
Loaded symbols for /lib/libgcc_s.so.1
Reading symbols from /lib/tls/libnss_dns.so.2...done.
Loaded symbols for /lib/tls/libnss_dns.so.2
Reading symbols from /lib/tls/libresolv.so.2...done.
Loaded symbols for /lib/tls/libresolv.so.2
#0  apr_brigade_cleanup (data=0x8398980) at buckets/apr_brigade.c:44
44              apr_bucket_delete(e);
(gdb) bt full
#0  apr_brigade_cleanup (data=0x8398980) at buckets/apr_brigade.c:44
No locals.
#1  0xb7f24e7d in apr_brigade_destroy (b=0x8398980) at buckets/apr_brigade.c:53
No locals.
#2  0x080726f4 in ap_core_output_filter (f=0xaa083538, b=0x8398980) at
core_filters.c:876
        hdtr = {headers = 0xb41c3ff8, numheaders = 134740504, trailers =
0x8392910, numtrailers = 0}
        bytes_sent = 0
        flags = 0
        nbytes = 1429
        nvec_trailers = 0
        vec = {{iov_base = 0x838d208, iov_len = 206}, {iov_base = 0x8394a09,
iov_len = 1223}, {iov_base = 0x0, iov_len = 0}, {iov_base = 0xaa083aa0, iov_len
= 2852666000}, {iov_base = 0xb41c3f48, iov_len = 3083217623}, {iov_base = 0x0,
    iov_len = 2852666000}, {iov_base = 0xb41c3f48, iov_len = 3083217643},
{iov_base = 0x8392910, iov_len = 0}, {iov_base = 0xb41c3f30, iov_len = 0},
{iov_base = 0x838e938, iov_len = 0}, {iov_base = 0xb41c3f68, iov_len =
134646597}, {iov_base = 0x0,
    iov_len = 0}, {iov_base = 0x0, iov_len = 0}, {iov_base = 0x8393960, iov_len
= 137967992}, {iov_base = 0xb41c3ff8, iov_len = 134740481}, {iov_base =
0x8393960, iov_len = 137967992}}
        flen = Variable "flen" is not available.
(gdb) thread apply all bt full

Thread 27 (process 25976):
#0  0x00000293 in ?? ()
No symbol table info available.
#1  0x00000000 in ?? ()
No symbol table info available.
#2  0x00000000 in ?? ()
No symbol table info available.
#3  0x00000000 in ?? ()
No symbol table info available.
#4  0x00000000 in ?? ()
No symbol table info available.
#5  0x00000000 in ?? ()
No symbol table info available.
#6  0x00000000 in ?? ()
No symbol table info available.
#7  0x00000000 in ?? ()
No symbol table info available.
#8  0x00000000 in ?? ()
No symbol table info available.
#9  0x00000000 in ?? ()
---Type <return> to continue, or q <return> to quit---



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