ID: 26478 User updated by: fillmore at nrcan dot gc dot ca Reported By: fillmore at nrcan dot gc dot ca -Status: No Feedback +Status: Open Bug Type: Reproducible crash Operating System: Solaris 8 (SPARC) PHP Version: 4.3.4 New Comment:
There is no core file produced for process that crashes (not sure why), so I used truss to stop the process when it gets a FLTACCESS fault (bus or alignment error), then used pstack to do a stack trace of all the lightweight processes (threads), and here is the one for _db_return_: ----------------- lwp# 17 / thread# 27 -------------------- fe4fa5c0 _db_return_ (b4, fd2bde9c, fd2bde98, fd2bde94, fd2bde98, fd2bde94) + 1 98 fe4eff98 vio_read (4, 105cb18, 4, 434c, fd2bdf38, 434c) + 144 fe4ef8f4 my_real_read (105c698, 434c, 950, 948, fe67ffa0, 2) + e4 fe4efc10 my_net_read (105c698, 8, 1, 0, 1bb9c, fea973e4) + 8 fe4ea5b8 net_safe_read (105c698, fe6176c0, 6cc, fd2be0ac, fd2be0a8, fd2be0a4) + 50 fe4ed2cc mysql_read_query_result (105c698, fd2be134, fd2be130, fd2be12c, 1, fd2 be12c) + 50 fe4ed5a4 mysql_real_query (105c698, 10754a8, 93, 105c560, 0, 2) + f8 fe4e6e9c php_mysql_do_query_general (d95398, 105c698, 2, 0, 4000, 105c5a8) + 46 4 fe4e70e0 php_mysql_do_query (1, 105c5a8, 0, 1, d7d178, 1) + d0 fe4e7108 zif_mysql_query (1, 105c5a8, 0, 1, d7d178, fe4e70f0) + 18 fe5ff208 execute (10611d8, d7d178, fd2be8e0, 3c00, d828c8, db79a8) + 63cc fe5e7de4 zend_execute_scripts (fe69f0a4, d7d178, 0, 3, fe69f404, fd2c1274) + 12 4 fe5abdcc php_execute_script (0, d7d178, 8000, a92340, d828cc, 65) + 334 fe609370 php4_execute (5de4c8, a4fd98, a4fde0, 4000, 0, 4000) + 4b4 ff239244 __0FNfunc_exec_strP6KFuncStructP6GpblockP6HSessionP6HRequest (6b7c8, 5 de4c8, a4fd98, a4fde0, 633, 0) + 1f0 ff23a434 INTobject_execute (5dfec8, a4fd98, a4fde0, a418c8, a4fce8, ff308000) + 56c ff23e0b4 INTservact_service (a4fd98, a4fde0, 0, 0, 0, ff308400) + 444 ff23e608 INTservact_handle_processed (a4fd98, a4fde0, 1, 5d2420, fffffffc, 0) + 140 ff27308c __0fLHttpRequestUUnacceleratedRespondPCcPc (a4fce8, a91478, ff317fd8, a4fde0, a4fd98, ff317c00) + 4e8 ff27268c __0fLHttpRequestNHandleRequestP6Gnetbuf (a4fce8, a91490, a91478, 2000, a8f460, ff317c00) + 590 ff270e3c __0fNDaemonSessionDrunv (a418c8, ff317800, ff317800, ff2720fc, ffffe80 0, 0) + 40c ff11407c ThreadMain (a418c8, ff114054, feb4e000, 8, a502c8, 0) + 28 fed67698 _pt_root (a502c8, fed81074, 1, 5, 1, fe401000) + a4 feb3b744 _thread_start (a502c8, 0, 0, 0, 0, 0) + 40 Previous Comments: ------------------------------------------------------------------------ [2003-12-04 02:25:46] [EMAIL PROTECTED] No feedback was provided. The bug is being suspended because we assume that you are no longer experiencing the problem. If this is not the case and you are able to provide the information that was requested earlier, please do so and change the status of the bug back to "Open". Thank you. ------------------------------------------------------------------------ [2003-11-30 19:23:50] [EMAIL PROTECTED] Thank you for this bug report. To properly diagnose the problem, we need a backtrace to see what is happening behind the scenes. To find out how to generate a backtrace, please read http://bugs.php.net/bugs-generating-backtrace.php Once you have generated a backtrace, please submit it to this bug report and change the status back to "Open". Thank you for helping us make PHP better. When generating a backtrace make sure your PHP has been compiled with --enable-debug. ------------------------------------------------------------------------ [2003-11-30 19:16:05] fillmore at nrcan dot gc dot ca Description: ------------ PHP 4.3.4 --with-nsapi (and 4.3.2) segfaults when many simultaneous requests are made to a script that calls MySQL. It fails under both SunONE Web Server 6.0 and 6.1 with: [30/Nov/2003:18:39:36] catastrophe ( 2877): Server crash detected (signal SIGBUS) [30/Nov/2003:18:39:36] info ( 2877): Crash occurred in NSAPI SAF php4_execute [30/Nov/2003:18:39:36] info ( 2877): Crash occurred in function _db_return_ from module /sunone/bin/libphp4.so It only happens if a load test is run with more than about 30 simultaneous users. It does not appear to be a multithreading problem- it still fails with all CPUs except one shut off. - Bob Fillmore ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=26478&edit=1
