Bug #77358 [NEW]: random Segmentation fault (core dumped)

From: kinoute at gmail dot com Operating system: Ubuntu 16.04.5 PHP version: 7.3.0 Package: PDO MySQL Bug Type: Bug Bug description:random Segmentation fault (core dumped) Description: ------------ It happens on a VPN running Ubuntu 16.04.5 & PHP 7.3.0 (upgraded from 7.2.13). I'm getting at random intervals Segfault errors on some scripts. I was able to catch a segfault running my script through gdb. Here is the output backtrace: (gdb) run checkwin.php Starting program: /usr/bin/php checkwin.php [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Program received signal SIGSEGV, Segmentation fault. 0x00005555557c2d3a in _efree () (gdb) bt #0 0x00005555557c2d3a in _efree () #1 0x00007ffff2d4fea7 in ?? () from /usr/lib/php/20180731/mysqlnd.so #2 0x00007ffff2d4af4f in ?? () from /usr/lib/php/20180731/mysqlnd.so #3 0x00007ffff2d4f641 in ?? () from /usr/lib/php/20180731/mysqlnd.so #4 0x00007ffff2d4e0b9 in ?? () from /usr/lib/php/20180731/mysqlnd.so #5 0x00007ffff2d4be04 in ?? () from /usr/lib/php/20180731/mysqlnd.so #6 0x00007ffff2d4bf4e in ?? () from /usr/lib/php/20180731/mysqlnd.so #7 0x00007fffed601ee4 in ?? () from /usr/lib/php/20180731/pdo_mysql.so #8 0x00007ffff2b28d0c in ?? () from /usr/lib/php/20180731/pdo.so #9 0x00007ffff2b2cbaa in ?? () from /usr/lib/php/20180731/pdo.so #10 0x00005555557fc60e in ?? () #11 0x00005555557f92b1 in zend_hash_graceful_reverse_destroy () #12 0x00005555557e879e in ?? () #13 0x00005555557875e2 in php_module_shutdown () #14 0x00005555556427fa in ?? () #15 0x00007ffff5cf0830 in __libc_start_main (main=0x555555642370, argc=2, argv=0x7fffffffe5b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe5a8) at ../csu/libc-start.c:291 #16 0x0000555555642909 in _start () (gdb) I can also see segfaults in /var/log/syslog: Dec 27 12:05:15 vps12833 kernel: [ 1122.000275] php[1975]: segfault at 7f4d49000000 ip 000055a75bf88d3a sp 00007fff1fb200f0 error 4 in php7.3[55a75bd1a000+3eb000] -- Edit bug report at https://bugs.php.net/bug.php?id=77358&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=77358&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=77358&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=77358&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=77358&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=77358&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=77358&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=77358&r=needscript Try newer version: https://bugs.php.net/fix.php?id=77358&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=77358&r=support Expected behavior: https://bugs.php.net/fix.php?id=77358&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=77358&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=77358&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=77358&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77358&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=77358&r=dst IIS Stability: https://bugs.php.net/fix.php?id=77358&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=77358&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=77358&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=77358&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=77358&r=mysqlcfg