Bug #75395 [Fbk->NoF]: Core dump in in timelib_get_time_zone_info

Edit report at https://bugs.php.net/bug.php?id=75395&edit=1 ID: 75395 Updated by: php-bugs@lists.php.net Reported by: phil at jankaritech dot com Summary: Core dump in in timelib_get_time_zone_info -Status: Feedback +Status: No Feedback Type: Bug Package: Reproducible crash Operating System: Ubuntu 16.04 PHP Version: 7.1.10 Private report: N New Comment: No feedback was provided. The bug is being suspended because we assume that you are no longer experiencing the problem. If this is not the case and you are able to provide the information that was requested earlier, please do so and change the status of the bug back to "Re-Opened". Thank you. Previous Comments: ------------------------------------------------------------------------ [2017-10-17 11:55:18] derick@php.net 1. There should be a php-7.1-dbgsym package, at least in Ondrej's PPA 2. I had a look around, but can't find a link. You can do "apt source php7.1" though, and have a look at debian/patches/0013-Add-support-for-use-of-the-system-timezone-database.patch - the name might be slightly off, as this is with the Debian package I have locally 3. Maybe at https://deb.sury.org/#bug-reporting ------------------------------------------------------------------------ [2017-10-17 11:25:22] phil at jankaritech dot com The backtrace on Ubuntu 17.10 is just the same as I posted. If you can point to any of the following I am happy to do more: 1) a package that will give symbols for gdb to report 2) where I find the Ubuntu patching of PHP stuff, to look at the diffs 3) if I should report this somewhere to Ubuntu? 4) whatever else... ------------------------------------------------------------------------ [2017-10-17 10:38:42] phil at jankaritech dot com On Ubuntu 16.04 I get alternate PHP versions using: sudo add-apt-repository ppa:ondrej/php But the problem happens also in Ubuntu 17.10, which comes with PHP 7.1 by default. This is where I first noticed the problem. The mention of Ubuntu 16.04 was just to demonstrate that I was able to use "the same" PHP on a different version of Ubuntu and reproduce the problem. So I will reproduce again on Ubuntu 17.10 and see if the backtrace has more information. ------------------------------------------------------------------------ [2017-10-17 09:30:23] derick@php.net This backtrace isn't particularly useful, as it does not have any symbols. Right now, I am also not convinced this is a bug *in* PHP. Ubuntu patches PHP's date/time support and that sometimes has bugs too. A backtrace with debugging symbols is needed for this, but I can't find a package for Ubuntu 16.04 that does this. Curiously, 16.04 also doesn't have a php7.1 package, so I am not sure where you got that from. ------------------------------------------------------------------------ [2017-10-17 06:59:49] phil at jankaritech dot com Description: ------------ PHP 7.1.10 Using PHP dev server Reproduced on both Ubuntu 16.04 LTS and Ubuntu 17.10-BETA Backtrace: Core was generated by `php -S localhost:8080'. Program terminated with signal SIGSEGV, Segmentation fault. warning: Unexpected size of section `.reg-xstate/19170' in core file. #0 0x000055dd66964ca0 in ?? () (gdb) bt #0 0x000055dd66964ca0 in ?? () #1 0x000055dd66966984 in timelib_get_time_zone_info () #2 0x000055dd6696884c in timelib_unixtime2local () #3 0x000055dd66944fc6 in php_format_date () #4 0x000055dd66b6dcbb in ?? () #5 0x000055dd66b70c55 in ?? () #6 0x000055dd66b7158e in ?? () #7 0x000055dd66b72119 in do_cli_server () #8 0x000055dd6693bf93 in main () So far I have narrowed it down in ownCloud10 to: - skeleton directory of default files for a new user has >45 files - create a new user - login as that user The PHP server is copying these files into the user's new folder, and thumbnails get generated and AJAX calls to display the thumbnails... Sorry - it needs cutting down into a more simplified actual code example! PHP core dumps with the above backtrace. Use <=45 files and it works fine. I cannot reproduce it with PHP 7.0.22 (I can switch back and forth and the segfault comes and goes) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=75395&edit=1