Bug#449027: vserver: [notice] child pid 27907 exit signal Segmentation fault (11)
Hello Stefan,
I''m sorry, because it was due to directory permissions, that I didn't
get core dumps, oops...
Finally I get now coredumps, but I'm not able to decipher them. I
started apache this way:
# /usr/sbin/apache.dbg -f /etc/apache/httpd.conf
And used gallery2 webapp to get the sigseg 11 with coredumps of the
apache childs.
[Sun Nov 11 22:57:10 2007] [notice] child pid 19963 exit signal
Segmentation fault (11), possible coredump in /coredump
Here is one:
# gdb /usr/sbin/apache.dbg /coredump/core.28525
GNU gdb 6.4.90-debian
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details.
This GDB was configured as "i486-linux-gnu"...Using host libthread_db
library "/lib/tls/libthread_db.so.1".
Reading symbols from /lib/tls/libm.so.6...Reading symbols
from /usr/lib/debug/lib/tls/libm-2.3.6.so...done.
done.
Loaded symbols for /lib/tls/libm.so.6
Reading symbols from /lib/tls/libpthread.so.0...Reading symbols
from /usr/lib/debug/lib/tls/libpthread-2.3.6.so...done.
done.
Loaded symbols for /lib/tls/libpthread.so.0
Reading symbols from /lib/tls/libcrypt.so.1...Reading symbols
from /usr/lib/debug/lib/tls/libcrypt-2.3.6.so...done.
done.
Loaded symbols for /lib/tls/libcrypt.so.1
Reading symbols from /usr/lib/libdb-4.4.so...done.
Loaded symbols for /usr/lib/libdb-4.4.so
Reading symbols from /usr/lib/libexpat.so.1...done.
Loaded symbols for /usr/lib/libexpat.so.1
Reading symbols from /lib/tls/libdl.so.2...Reading symbols
from /usr/lib/debug/lib/tls/libdl-2.3.6.so...done.
done.
Loaded symbols for /lib/tls/libdl.so.2
Reading symbols from /lib/tls/libc.so.6...Reading symbols
from /usr/lib/debug/lib/tls/libc-2.3.6.so...done.
done.
Loaded symbols for /lib/tls/libc.so.6
Reading symbols from /lib/ld-linux.so.2...Reading symbols
from /usr/lib/debug/lib/ld-2.3.6.so...done.
done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /lib/tls/libnsl.so.1...Reading symbols
from /usr/lib/debug/lib/tls/libnsl-2.3.6.so...done.
done.
Loaded symbols for /lib/tls/libnsl.so.1
Reading symbols from /lib/tls/libnss_compat.so.2...Reading symbols
from /usr/lib/debug/lib/tls/libnss_compat-2.3.6.so...done.
done.
Loaded symbols for /lib/tls/libnss_compat.so.2
Reading symbols from /lib/tls/libnss_nis.so.2...Reading symbols
from /usr/lib/debug/lib/tls/libnss_nis-2.3.6.so...done.
done.
Loaded symbols for /lib/tls/libnss_nis.so.2
Reading symbols from /lib/tls/libnss_files.so.2...Reading symbols
from /usr/lib/debug/lib/tls/libnss_files-2.3.6.so...done.
done.
Loaded symbols for /lib/tls/libnss_files.so.2
Reading symbols from /lib/tls/librt.so.1...Reading symbols
from /usr/lib/debug/lib/tls/librt-2.3.6.so...done.
done.
Loaded symbols for /lib/tls/librt.so.1
Reading symbols from /usr/lib/apache/1.3/mod_log_config.so...done.
Loaded symbols for /usr/lib/apache/1.3/mod_log_config.so
Reading symbols from /usr/lib/apache/1.3/mod_log_agent.so...done.
Loaded symbols for /usr/lib/apache/1.3/mod_log_agent.so
Reading symbols from /usr/lib/apache/1.3/mod_log_referer.so...done.
Loaded symbols for /usr/lib/apache/1.3/mod_log_referer.so
Reading symbols from /usr/lib/apache/1.3/mod_log_forensic.so...done.
Loaded symbols for /usr/lib/apache/1.3/mod_log_forensic.so
Reading symbols from /usr/lib/apache/1.3/mod_mime_magic.so...done.
Loaded symbols for /usr/lib/apache/1.3/mod_mime_magic.so
Reading symbols from /usr/lib/apache/1.3/mod_mime.so...done.
Loaded symbols for /usr/lib/apache/1.3/mod_mime.so
Reading symbols from /usr/lib/apache/1.3/mod_status.so...done.
Loaded symbols for /usr/lib/apache/1.3/mod_status.so
Reading symbols from /usr/lib/apache/1.3/mod_info.so...done.
Loaded symbols for /usr/lib/apache/1.3/mod_info.so
Reading symbols from /usr/lib/apache/1.3/mod_dir.so...done.
Loaded symbols for /usr/lib/apache/1.3/mod_dir.so
Reading symbols from /usr/lib/apache/1.3/mod_alias.so...done.
Loaded symbols for /usr/lib/apache/1.3/mod_alias.so
Reading symbols from /usr/lib/apache/1.3/mod_rewrite.so...done.
Loaded symbols for /usr/lib/apache/1.3/mod_rewrite.so
Reading symbols from /usr/lib/apache/1.3/mod_access.so...done.
Loaded symbols for /usr/lib/apache/1.3/mod_access.so
Reading symbols from /usr/lib/apache/1.3/mod_auth.so...done.
Loaded symbols for /usr/lib/apache/1.3/mod_auth.so
Reading symbols from /usr/lib/apache/1.3/mod_setenvif.so...done.
Loaded symbols for /usr/lib/apache/1.3/mod_setenvif.so
Reading symbols from /usr/lib/apache/1.3/libphp5.so...done.
Loaded symbols for /usr/lib/apache/1.3/libphp5.so
Reading symbols from /usr/lib/libz.so.1...done.
Loaded symbols for /usr/lib/libz.so.1
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/libpcre.so.3...done.
Loaded symbols for /usr/lib/libpcre.so.3
Reading symbols from /lib/libbz2.so.1.0...done.
Loaded symbols for /lib/libbz2.so.1.0
Reading symbols from /lib/tls/libresolv.so.2...Reading symbols
from /usr/lib/debug/lib/tls/libresolv-2.3.6.so...done.
done.
Loaded symbols for /lib/tls/libresolv.so.2
Reading symbols from /usr/lib/libgssapi_krb5.so.2...done.
Loaded symbols for /usr/lib/libgssapi_krb5.so.2
Reading symbols from /usr/lib/libkrb5.so.3...done.
Loaded symbols for /usr/lib/libkrb5.so.3
Reading symbols from /usr/lib/libk5crypto.so.3...done.
Loaded symbols for /usr/lib/libk5crypto.so.3
Reading symbols from /lib/libcom_err.so.2...done.
Loaded symbols for /lib/libcom_err.so.2
Reading symbols from /usr/lib/libxml2.so.2...done.
Loaded symbols for /usr/lib/libxml2.so.2
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/libkrb5support.so.0...done.
Loaded symbols for /usr/lib/libkrb5support.so.0
Reading symbols from /usr/lib/apache/1.3/mod_prctl.so...done.
Loaded symbols for /usr/lib/apache/1.3/mod_prctl.so
Core was generated by `/usr/sbin/apache.dbg -f /etc/apache/httpd.conf'.
Program terminated with signal 11, Segmentation fault.
#0 0xb7ff26e5 in do_lookup_x () from /lib/ld-linux.so.2
(gdb) bt full
#0 0xb7ff26e5 in do_lookup_x () from /lib/ld-linux.so.2
No symbol table info available.
#1 0xb7ff2b07 in _dl_lookup_symbol_x () from /lib/ld-linux.so.2
No symbol table info available.
#2 0xb7ff62f9 in fixup () from /lib/ld-linux.so.2
No symbol table info available.
#3 0xb7ff6090 in _dl_runtime_resolve () from /lib/ld-linux.so.2
No symbol table info available.
#4 0xb7372dc3 in __do_global_dtors_aux () from /lib/tls/librt.so.1
No symbol table info available.
#5 0xb73766e7 in _fini () from /lib/tls/librt.so.1
No symbol table info available.
#6 0xb7ff6ede in _dl_fini () from /lib/ld-linux.so.2
No symbol table info available.
#7 0xb7d554f0 in exit () from /lib/tls/libc.so.6
No symbol table info available.
#8 0x0805d51a in clean_child_exit (code=0) at http_main.c:522
No locals.
#9 0x0805f746 in child_main (child_num_arg=<value optimized out>) at
http_main.c:4904
conn_io = (BUFF *) 0x1
r = (request_rec *) 0x805d550
clen = 16
sa_server = {sa_family = 2, sa_data
= "\000PYn\234\n\000\000\000\000\000\000\000"}
sa_client = {sa_family = 2, sa_data
= "��:�\000\000\000\000\000\000\000"}
lr = (listen_rec *) 0x1
#10 0x0805fe46 in make_child (s=0x809005c, slot=7, now=1194817927) at
http_main.c:5054
pid = 0
#11 0x08060bf8 in standalone_main (argc=<value optimized out>,
argv=<value optimized out>) at http_main.c:5239
i = <value optimized out>
remaining_children_to_start = 0
#12 0x08061dd9 in main (argc=3, argv=0xbfffdac4) at http_main.c:5770
conn = <value optimized out>
cio = <value optimized out>
r = <value optimized out>
sa_server = {sa_family = 25684, sa_data
= "\b\b(�����\004\b�\017\000�"}
sa_client = {sa_family = 25320, sa_data
= "��\030�����\004\b�\177��"}
l = <value optimized out>
c = <value optimized out>
sock_in = <value optimized out>
sock_out = <value optimized out>
(gdb)
Please, can you advice me to get better debugging sessions?
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