Bug #51580 [Opn->Fbk]: socket_select randomly crashes when used together with fork and Unix signals

Edit report at http://bugs.php.net/bug.php?id=51580&edit=1 ID: 51580 Updated by: pajoye@php.net Reported by: marco at vmsoft-gbr dot de Summary: socket_select randomly crashes when used together with fork and Unix signals -Status: Open +Status: Feedback Type: Bug Package: PCNTL related Operating System: Debian Linux PHP Version: 5.3.2 New Comment: If it crashes then linux should be able to generate a core dump file (without gdb). You can then use it to generate a back trace. Previous Comments: ------------------------------------------------------------------------ [2010-04-17 13:39:33] marco at vmsoft-gbr dot de Uh, the PHP *process* doesn't crash, so no corefile. Sorry, was bad choice of words by me. Anyway, whatever happens with socket_select there should not happen... but how to backtrace that one without an actual crash? ------------------------------------------------------------------------ [2010-04-17 13:23:08] pajoye@php.net Can you try to generate a coredump and use it later to get a bt: http://stackoverflow.com/questions/17965/generate-a-core-dump-in-linux ------------------------------------------------------------------------ [2010-04-17 11:13:18] marco at vmsoft-gbr dot de just ran it under gdb, it fails as expected, but as it's not segfaulting, no backtrace can be made. ------------------------------------------------------------------------ [2010-04-17 11:06:53] marco at vmsoft-gbr dot de PHP itself doesn't crash, the error is not fatal - and how do I make a gdb backtrace on a forked process, anyway? ------------------------------------------------------------------------ [2010-04-17 03:51:06] pajoye@php.net 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. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/bug.php?id=51580 -- Edit this bug report at http://bugs.php.net/bug.php?id=51580&edit=1