Bug #81391 [NEW]: Segfault in a forked process

From: mrskman at gmail dot com Operating system: Ubuntu 18.04 PHP version: 8.0.10 Package: *General Issues Bug Type: Bug Bug description:Segfault in a forked process Description: ------------ I run pcntl_fork() to process large arrays in background. One of arrays is causing segfaults on 2 of 4 servers. I tried to increase memory limit to a 10x higher value just to be sure this is not a memory issue but it still segfaults on 2 servers. I was not able to create a test script. The only thing I have is a backtrace from attached gdb. Actual result: -------------- Program received signal SIGSEGV, Segmentation fault. 0x0000564372710a35 in execute_ex () (gdb) bt #0 0x0000564372710a35 in execute_ex () #1 0x00005643725ac1cd in zend_call_function () #2 0x000056437238beb9 in zif_array_map () #3 0x00005643727133c4 in execute_ex () #4 0x00005643725ac1cd in zend_call_function () #5 0x000056437238beb9 in zif_array_map () #6 0x00005643727133c4 in execute_ex () #7 0x00005643725ac1cd in zend_call_function () #8 0x000056437238beb9 in zif_array_map () #9 0x00005643727133c4 in execute_ex () #10 0x00005643725ac1cd in zend_call_function () #11 0x000056437238beb9 in zif_array_map () #12 0x00005643727133c4 in execute_ex () #13 0x00005643725ac1cd in zend_call_function () #14 0x000056437238beb9 in zif_array_map () #15 0x00005643727133c4 in execute_ex () ... #1593 0x00005643727133c4 in execute_ex () #1594 0x00005643725ac1cd in zend_call_function () #1595 0x000056437238beb9 in zif_array_map () #1596 0x00005643727133c4 in execute_ex () #1597 0x00005643725ac1cd in zend_call_function () #1598 0x000056437238beb9 in zif_array_map () #1599 0x00005643727133c4 in execute_ex () #1600 0x00005643725ac1cd in zend_call_function () #1601 0x000056437238beb9 in zif_array_map () #1602 0x00005643727133c4 in execute_ex () #1603 0x00005643725ac1cd in zend_call_function () #1604 0x000056437238beb9 in zif_array_map () #1605 0x00005643727133c4 in execute_ex () #1606 0x00005643725ac1cd in zend_call_function () #1607 0x000056437238beb9 in zif_array_map () #1608 0x00005643727133c4 in execute_ex () #1609 0x00005643725ac1cd in zend_call_function () #1610 0x000056437238beb9 in zif_array_map () #1611 0x00005643727133c4 in execute_ex () #1612 0x00005643725ac1cd in zend_call_function () #1613 0x000056437238beb9 in zif_array_map () #1614 0x00005643727133c4 in execute_ex () #1615 0x00005643725ac1cd in zend_call_function () #1616 0x000056437238beb9 in zif_array_map () #1617 0x00005643727133c4 in execute_ex () #1618 0x00005643725ac1cd in zend_call_function () #1619 0x000056437238beb9 in zif_array_map () #1620 0x00005643727133c4 in execute_ex () #1621 0x00005643725ac1cd in zend_call_function () #1622 0x000056437238beb9 in zif_array_map () #1623 0x00005643727133c4 in execute_ex () #1624 0x00005643725ac1cd in zend_call_function () #1625 0x000056437238beb9 in zif_array_map () #1626 0x00005643727133c4 in execute_ex () #1627 0x00005643725ac1cd in zend_call_function () #1628 0x000056437238beb9 in zif_array_map () #1629 0x00005643727133c4 in execute_ex () #1630 0x00005643725ac1cd in zend_call_function () #1631 0x000056437239fce8 in zif_call_user_func_array () #1632 0x00005643727133c4 in execute_ex () #1633 0x00005643725ac1cd in zend_call_function () #1634 0x000056437239fce8 in zif_call_user_func_array () #1635 0x00005643727133c4 in execute_ex () #1636 0x000056437272b53d in zend_execute () #1637 0x00005643725cf6d9 in zend_execute_scripts () #1638 0x000056437250a213 in php_execute_script () #1639 0x000056437278ee1f in do_cli () #1640 0x00005643727901e6 in main () -- Edit bug report at https://bugs.php.net/bug.php?id=81391&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=81391&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=81391&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=81391&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=81391&r=needscript Try newer version: https://bugs.php.net/fix.php?id=81391&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=81391&r=support Expected behavior: https://bugs.php.net/fix.php?id=81391&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=81391&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=81391&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=81391&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=81391&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=81391&r=dst IIS Stability: https://bugs.php.net/fix.php?id=81391&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=81391&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=81391&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=81391&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=81391&r=mysqlcfg