Bug #74714 [Opn->Wfx]: serialize() crashes with multiple threads / pthreads

Edit report at https://bugs.php.net/bug.php?id=74714&edit=1 ID: 74714 Updated by: cmb@php.net Reported by: benjamin dot roth at jaumo dot com Summary: serialize() crashes with multiple threads / pthreads -Status: Open +Status: Wont fix Type: Bug Package: Reproducible crash Operating System: Linux PHP Version: 7.1.5 -Assigned To: +Assigned To: cmb Block user comment: N Private report: N New Comment: pthreads is no longer supported as of PHP 7.4.0[1]. [1] <https://github.com/krakjoe/pthreads/issues/929> Previous Comments: ------------------------------------------------------------------------ [2017-06-08 17:47:28] benjamin dot roth at jaumo dot com Description: ------------ serialize() seems to be not thread safe. Scripts crash with SIGSEGV or SIGABORT on a regular basis if parallel threads do serialization with pthreads. Sometimes this happens at the end of the script on shutdown and sometimes in the middle of script execution. As it is a race condition there is no deterministic way to reproduce it but the attached script fails after some time in almost all cases. Test script: --------------- https://gist.github.com/brstgt/e04d08c237d84003103050dc7c371acd Serialized file required as "entities.txt" in test script: https://cl.ly/2v3Y1o2S351Q Run in loop until it segfaults or aborts. Normally between 1-30s while true; do php scripts/segv.php || break; done Expected result: ---------------- No SIGABORT or SIGSEGV Actual result: -------------- https://gist.github.com/brstgt/76e3e1135872e2ae1770ae4e59b66696 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=74714&edit=1