ID: 37171 Updated by: [EMAIL PROTECTED] Reported By: bishopx at quick dot cz -Status: Open +Status: Feedback Bug Type: cURL related Operating System: win32 PHP Version: 5.1.3RC3 New Comment:
Well, the backtrace is obviously invalid and doesn't add any helpful information.. >I suggest to implement debug tracing like this one: >http://www.codeproject.com/debug/extendedtrace.asp Sure. If you can do it - please, do. Unfortunately I don't use windows, so I've no clue what's this all about.. Are you able to reproduce it with Apache1 ? Did you try with PHP CLI ? Previous Comments: ------------------------------------------------------------------------ [2006-04-22 21:47:16] bishopx at quick dot cz This is the call stack generated in VC8 using debug symbols for VC6, so the info is incomplete. However, I was able to decipher from asm that it crashes when reading the pointer curl_llist_element *e, the second argument of Curl_llist_insert_next(), hence the error: Unhandled exception at 0x013d0c78 (php_curl.dll) in httpd.exe: 0xC0000005: Access violation reading location 0x00000008. > php_curl.dll!_Curl_llist_insert_next() + 0x48 bytes php_curl.dll!_Curl_hash_add() + 0x71 bytes php_curl.dll!_Curl_cache_addr() + 0x6b bytes php_curl.dll!_Curl_addrinfo4_callback() + 0x82 bytes php_curl.dll!_Curl_addrinfo4_callback() + 0x14 bytes php_curl.dll!_Curl_getaddrinfo() + 0x2af bytes ntdll.dll!7c91056d() [Frames below may be incorrect and/or missing, no symbols loaded for ntdll.dll] kernel32.dll!7c80b50b() ntdll.dll!7c91056d() kernel32.dll!7c8399f3() .. this looks like a thread created in php_curl. I suggest to implement debug tracing like this one: http://www.codeproject.com/debug/extendedtrace.asp This would greatly improve the feedback from users, because there would be no need for installing Visual Studio or compiling the source. Only 2 things are needed: pdb files and dbghelp.dll (a text file is generated). ------------------------------------------------------------------------ [2006-04-22 20:30:57] [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 for *NIX and http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32 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. ------------------------------------------------------------------------ [2006-04-22 20:26:06] bishopx at quick dot cz I already tried, crashing.. ------------------------------------------------------------------------ [2006-04-22 19:58:02] [EMAIL PROTECTED] Please try using this CVS snapshot: http://snaps.php.net/php5.1-latest.tar.gz For Windows: http://snaps.php.net/win32/php5.1-win32-latest.zip ------------------------------------------------------------------------ [2006-04-22 19:49:49] bishopx at quick dot cz Description: ------------ php_curl.dll is the cause of frequent crashes when using curl_multi_*() functions, especially curl*_close() and curl_multi_remove_handle(). However, even other functions sometimes cause a crash (I removed the above ones). The situation in the latest snapshots remains the same. It looks like a poor thread synchronisation. Apache 2.2.x used. Reproduce code: --------------- This should work fine: http://php.net/manual/en/function.curl-multi-exec.php#48813 ..but you may have to increase the number of links in $connomains, or change them to pictures. Expected result: ---------------- The code doesn't crash the webserver. Actual result: -------------- The code often crashes the webserver (not always). ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=37171&edit=1
