#35315 [NEW]: Apache2 childs segfaulting

From: maddog2k at maddog2k dot net Operating system: Linux PHP version: 4CVS-2005-11-21 (snap) PHP Bug Type: Apache2 related Bug description: Apache2 childs segfaulting Description: ------------ Despite the fixes of bug #35264 and #35278, I now still see a few Apache2 child processes segfaulting in error_log, with PHP4CVS (+snap 2005-11-21) PHP5-latest seems not affected... I finally was able to make a backtrace this time, but the problem is that I wasn't able to find the PHP-code that is causing these crashes. Also, this is with Apache 2.0.54. When upgrading machines to 2.0.55 that don't show problems with 2.0.54 now, I get segfaulting child processes on them too. The backtrace points to php_fopen_wrapper.c:81 which is also modified 3 days ago in CVS... And always shows a MySQL header. (either 4.1.7 or 5.0.15) [Also, I haven't been able to get a segfault with running 'httpd -X', I only see 'Program received signal SIGPIPE, Broken pipe.' then (despite .gdbinit: handle SIGPIPE nostop)] However, here the backtrace for PHP4CVS (-RC2-dev/200511211410) : ~:/tmp>/usr/local/gdb/bin/gdb /usr/local/apache2/bin/httpd /tmp/core GNU gdb 6.3 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 "i686-pc-linux-gnu"...Using host libthread_db library "/lib/libthread_db.so.1". Core was generated by `/usr/local/apache2/bin/httpd -DSSL'. Program terminated with signal 11, Segmentation fault. Reading symbols from /usr/local/ssl/lib/libssl.so.0.9.7...done. Loaded symbols for /usr/local/ssl/lib/libssl.so.0.9.7 Reading symbols from /usr/local/ssl/lib/libcrypto.so.0.9.7...done. Loaded symbols for /usr/local/ssl/lib/libcrypto.so.0.9.7 Reading symbols from /usr/local/apache2/lib/libaprutil-0.so.0...done. Loaded symbols for /usr/local/apache2/lib/libaprutil-0.so.0 Reading symbols from /usr/lib/libgdbm.so.2...done. Loaded symbols for /usr/lib/gcc-lib/i386-redhat-linux/3.3.2/../../../libgdbm.so.2 Reading symbols from /usr/lib/libdb-4.1.so...done. Loaded symbols for /usr/lib/gcc-lib/i386-redhat-linux/3.3.2/../../../libdb-4.1.so Reading symbols from /usr/local/lib/libexpat.so.0...done. Loaded symbols for /usr/local/lib/libexpat.so.0 Reading symbols from /usr/lib/libiconv.so.2...done. Loaded symbols for /usr/lib/gcc-lib/i386-redhat-linux/3.3.2/../../../libiconv.so.2 Reading symbols from /usr/local/apache2/lib/libapr-0.so.0...done. Loaded symbols for /usr/local/apache2/lib/libapr-0.so.0 Reading symbols from /usr/lib/libstdc++.so.5...done. Loaded symbols for /usr/lib/gcc-lib/i386-redhat-linux/3.3.2/../../../libstdc++.so.5 Reading symbols from /lib/librt.so.1...done. Loaded symbols for /lib/librt.so.1 Reading symbols from /lib/libcrypt.so.1...done. Loaded symbols for /lib/libcrypt.so.1 Reading symbols from /lib/libnsl.so.1...done. Loaded symbols for /lib/libnsl.so.1 Reading symbols from /lib/libpthread.so.0...done. Loaded symbols for /lib/libpthread.so.0 Reading symbols from /lib/libdl.so.2...done. Loaded symbols for /lib/libdl.so.2 Reading symbols from /lib/libc.so.6...done. Loaded symbols for /lib/libc.so.6 Reading symbols from /lib/libm.so.6...done. Loaded symbols for /lib/libm.so.6 Reading symbols from /lib/libgcc_s.so.1...done. Loaded symbols for /lib/libgcc_s.so.1 Reading symbols from /lib/ld-linux.so.2...done. Loaded symbols for /lib/ld-linux.so.2 Reading symbols from /lib/libnss_files.so.2...done. Loaded symbols for /lib/libnss_files.so.2 Reading symbols from /usr/local/apache2/modules/libphp4.so...done. Loaded symbols for /usr/local/apache2/modules/libphp4.so Reading symbols from /usr/lib/libzzip-0.so.13...done. Loaded symbols for /usr/lib/gcc-lib/i386-redhat-linux/3.3.2/../../../libzzip-0.so.13 Reading symbols from /usr/local/lib/libsablot.so.0...done. Loaded symbols for /usr/local/lib/libsablot.so.0 Reading symbols from /usr/local/pgsql/lib/libpq.so.4...done. Loaded symbols for /usr/local/pgsql/lib/libpq.so.4 Reading symbols from /usr/local/lib/libpdf.so.2...done. Loaded symbols for /usr/local/lib/libpdf.so.2 Reading symbols from /usr/lib/libz.so.1...done. Loaded symbols for /usr/lib/gcc-lib/i386-redhat-linux/3.3.2/../../../libz.so.1 Reading symbols from /usr/lib/libpng.so.3...done. Loaded symbols for /usr/lib/gcc-lib/i386-redhat-linux/3.3.2/../../../libpng.so.3 Reading symbols from /opt/mysql/lib/mysql/libmysqlclient.so.14...done. Loaded symbols for /usr/local/mysql/lib/mysql/libmysqlclient.so.14 Reading symbols from /usr/local/lib/libmhash.so.2...done. Loaded symbols for /usr/local/lib/libmhash.so.2 Reading symbols from /usr/local/lib/libmcrypt.so.4...done. Loaded symbols for /usr/local/lib/libmcrypt.so.4 Reading symbols from /usr/lib/libltdl.so.3...done. Loaded symbols for /usr/lib/gcc-lib/i386-redhat-linux/3.3.2/../../../libltdl.so.3 Reading symbols from /usr/lib/libldap-2.3.so.0...done. Loaded symbols for /usr/lib/gcc-lib/i386-redhat-linux/3.3.2/../../../libldap-2.3.so.0 Reading symbols from /usr/lib/liblber-2.3.so.0...done. Loaded symbols for /usr/lib/gcc-lib/i386-redhat-linux/3.3.2/../../../liblber-2.3.so.0 Reading symbols from /lib/libpam.so.0...done. Loaded symbols for /lib/libpam.so.0 Reading symbols from /usr/lib/libfreetype.so.6...done. Loaded symbols for /usr/lib/gcc-lib/i386-redhat-linux/3.3.2/../../../libfreetype.so.6 Reading symbols from /usr/lib/libjpeg.so.62...done. Loaded symbols for /usr/lib/gcc-lib/i386-redhat-linux/3.3.2/../../../libjpeg.so.62 Reading symbols from /usr/local/lib/libexslt.so.0...done. Loaded symbols for /usr/local/lib/libexslt.so.0 Reading symbols from /usr/local/lib/libxsltbreakpoint.so.1...done. Loaded symbols for /usr/local/lib/libxsltbreakpoint.so.1 Reading symbols from /usr/local/lib/libxslt.so.1...done. Loaded symbols for /usr/local/lib/libxslt.so.1 Reading symbols from /lib/libresolv.so.2...done. Loaded symbols for /lib/libresolv.so.2 Reading symbols from /usr/local/lib/libcurl.so.3...done. Loaded symbols for /usr/local/lib/libcurl.so.3 Reading symbols from /usr/local/lib/libxml2.so.2...done. Loaded symbols for /usr/local/lib/libxml2.so.2 Reading symbols from /lib/libnss_dns.so.2...done. Loaded symbols for /lib/libnss_dns.so.2 #0 0x4082aa3d in php_stream_input_read (stream=0x84642cc, buf=0x846a58c "?>\n\n<charsets max-id=\"94\">\n\n<copyright>\n Copyright (C) 2003 MySQL AB\n\n This program is free software; you can redistribute it and/or modify\n it under the terms of the GNU General Public License as p"..., count=8192) at /opt/install/apache-2.0.54_apache-1.3.34_php-4.4.2-RC2-dev-WideXS-02_php-5.0.5/php-4.4.2/ext/standard/php_fopen_wrapper.c:81 81 read_bytes = SG(request_info).raw_post_data_length - *position; (gdb) bt #0 0x4082aa3d in php_stream_input_read (stream=0x84642cc, buf=0x846a58c "?>\n\n<charsets max-id=\"94\">\n\n<copyright>\n Copyright (C) 2003 MySQL AB\n\n This program is free software; you can redistribute it and/or modify\n it under the terms of the GNU General Public License as p"..., count=8192) at /opt/install/apache-2.0.54_apache-1.3.34_php-4.4.2-RC2-dev-WideXS-02_php-5.0.5/php-4.4.2/ext/standard/php_fopen_wrapper.c:81 #1 0x4085f225 in php_stream_fill_read_buffer (stream=0x84642cc, size=100) at /opt/install/apache-2.0.54_apache-1.3.34_php-4.4.2-RC2-dev-WideXS-02_php-5.0.5/php-4.4.2/main/streams.c:584 #2 0x4085f355 in _php_stream_read (stream=0x84642cc, buf=0x84643ec "", size=100) at /opt/install/apache-2.0.54_apache-1.3.34_php-4.4.2-RC2-dev-WideXS-02_php-5.0.5/php-4.4.2/main/streams.c:632 #3 0x407f1e9e in zif_fread (ht=2, return_value=0x846420c, this_ptr=0x0, return_value_used=1) at /opt/install/apache-2.0.54_apache-1.3.34_php-4.4.2-RC2-dev-WideXS-02_php-5.0.5/php-4.4.2/ext/standard/file.c:2243 #4 0x408982ac in execute (op_array=0x8465048) at /opt/install/apache-2.0.54_apache-1.3.34_php-4.4.2-RC2-dev-WideXS-02_php-5.0.5/php-4.4.2/Zend/zend_execute.c:1675 #5 0x40898495 in execute (op_array=0x840d924) at /opt/install/apache-2.0.54_apache-1.3.34_php-4.4.2-RC2-dev-WideXS-02_php-5.0.5/php-4.4.2/Zend/zend_execute.c:1719 #6 0x40886345 in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /opt/install/apache-2.0.54_apache-1.3.34_php-4.4.2-RC2-dev-WideXS-02_php-5.0.5/php-4.4.2/Zend/zend.c:934 #7 0x408538fc in php_execute_script (primary_file=0xbfffdad0) at /opt/install/apache-2.0.54_apache-1.3.34_php-4.4.2-RC2-dev-WideXS-02_php-5.0.5/php-4.4.2/main/main.c:1743 #8 0x4089dfc9 in php_handler (r=0x8404eb0) at /opt/install/apache-2.0.54_apache-1.3.34_php-4.4.2-RC2-dev-WideXS-02_php-5.0.5/php-4.4.2/sapi/apache2handler/sapi_apache2.c:581 #9 0x080af51e in ap_run_handler (r=0x8404eb0) at config.c:152 #10 0x080afc8d in ap_invoke_handler (r=0x8404eb0) at config.c:364 #11 0x08090155 in ap_process_request (r=0x8404eb0) at http_request.c:249 #12 0x0808a7eb in ap_process_http_connection (c=0x83f1c88) at http_core.c:251 #13 0x080bbf5a in ap_run_process_connection (c=0x83f1c88) at connection.c:43 #14 0x080bc348 in ap_process_connection (c=0x83f1c88, csd=0x83f1bb0) at connection.c:176 #15 0x080addbb in child_main (child_num_arg=133) at prefork.c:610 #16 0x080adf45 in make_child (s=0x8108b90, slot=133) at prefork.c:704 #17 0x080ae1a4 in perform_idle_server_maintenance (p=0x8102e58) at prefork.c:839 #18 0x080ae5f9 in ap_mpm_run (_pconf=0x8102e58, plog=0x813ef48, s=0x8108b90) at prefork.c:1040 #19 0x080b4ff1 in main (argc=2, argv=0xbfffdf84) at main.c:618 (gdb) Reproduce code: --------------- Unfortunately none. -- Edit bug report at http://bugs.php.net/?id=35315&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=35315&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=35315&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=35315&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=35315&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=35315&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=35315&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=35315&r=needscript Try newer version: http://bugs.php.net/fix.php?id=35315&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=35315&r=support Expected behavior: http://bugs.php.net/fix.php?id=35315&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=35315&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=35315&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=35315&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=35315&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=35315&r=dst IIS Stability: http://bugs.php.net/fix.php?id=35315&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=35315&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=35315&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=35315&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=35315&r=mysqlcfg