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php-fpm8.1: segfault at ... ip ... sp ... error 4 in opcache.so #8149

Open zebroid opened 2 years ago

zebroid commented 2 years ago

Description

Yesterday I upgraded PHP from 8.1.2 to 8.1.3 (all packages from dotdeb.org) Today I got a segfault in phpmyadmin 5.1.1 when trying to get a list of tables. The error was persistent and only disappeared after restarting php-fpm. Looks like the JIT cache is getting corrupted somewhere?

syslog: Feb 24 13:04:12 host kernel: [519460.672067] php-fpm8.1[44280]: segfault at 7f10a325bdc6 ip 00007f10aea1b957 sp 00007ffcf773a010 error 4 in opcache.so[7f10ae968000+b5000] Feb 24 13:04:12 host kernel: [519460.672409] Code: 09 e9 3c fd ff ff 0f 1f 44 00 00 48 8b 05 79 e4 01 00 49 8b 56 18 48 63 00 48 8b 84 c2 c0 00 00 00 48 85 c0 0f 84 c9 01 00 00 40 06 01 0f 84 bf 01 00 00 48 8b b0 a8 00 00 00 48 83 7a 08 00

uname -a

Linux host 5.10.0-11-amd64 #1 SMP Debian 5.10.92-1 (2022-01-18) x86_64 GNU/Linux

php-fpm8.1 -v

PHP 8.1.3 (fpm-fcgi) (built: Feb 23 2022 16:07:16) Copyright (c) The PHP Group Zend Engine v4.1.3, Copyright (c) Zend Technologies with Zend OPcache v8.1.3, Copyright (c), by Zend Technologies

gdb /usr/sbin/php-fpm8.1 /tmp/core-php-fpm8.1-11-33-33-44284-1645697061 GNU gdb (Debian 10.1-1.7) 10.1.90.20210103-git Copyright (C) 2021 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: https://www.gnu.org/software/gdb/bugs/. Find the GDB manual and other documentation resources online at: http://www.gnu.org/software/gdb/documentation/.

For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/sbin/php-fpm8.1... Reading symbols from /usr/lib/debug/.build-id/9b/5e45f50e79db3a2d6acf92a15783df24331a52.debug...

warning: Can't open file /dev/zero (deleted) during file-backed mapping note processing [New LWP 44284] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `php-fpm: pool www '. Program terminated with signal SIGSEGV, Segmentation fault.

0 0x00007f10aea1b957 in zend_jit_trace_execute (ex=ex@entry=0x7f10aee181b0, op=op@entry=0x4386b4a0, trace_buffer=trace_buffer@entry=0x7ffcf773a160, start=,

is_megamorphic=is_megamorphic@entry=0) at ./ext/opcache/jit/zend_jit_vm_helpers.c:866

warning: Source file is more recent than executable. 866 || UNEXPECTED(!(jit_extension->func_info.flags & ZEND_FUNC_JIT_ON_HOT_TRACE))) { (gdb) bt

0 0x00007f10aea1b957 in zend_jit_trace_execute (ex=ex@entry=0x7f10aee181b0, op=op@entry=0x4386b4a0, trace_buffer=trace_buffer@entry=0x7ffcf773a160, start=,

is_megamorphic=is_megamorphic@entry=0) at ./ext/opcache/jit/zend_jit_vm_helpers.c:866

1 0x00007f10aea170c6 in zend_jit_trace_hot_root (execute_data=0x7f10aee181b0, opline=0x4386b4a0) at ./ext/opcache/jit/zend_jit_trace.c:7434

2 0x00000000438f4647 in ?? ()

3 0x00007f1000000000 in ?? ()

4 0x000000004386f1e0 in ?? ()

5 0x0000000000000000 in ?? ()

Directive Local Value Master Value opcache.blacklist_filename no value no value opcache.consistency_checks 0 0 opcache.dups_fix Off Off opcache.enable On On opcache.enable_cli Off Off opcache.enable_file_override Off Off opcache.error_log /var/log/php/php8.1-errors.log /var/log/php/php8.1-errors.log opcache.file_cache no value no value opcache.file_cache_consistency_checks On On opcache.file_cache_only Off Off opcache.file_update_protection 2 2 opcache.force_restart_timeout 180 180 opcache.huge_code_pages On On opcache.interned_strings_buffer 5 5 opcache.jit 1255 1255 opcache.jit_bisect_limit 0 0 opcache.jit_blacklist_root_trace 16 16 opcache.jit_blacklist_side_trace 8 8 opcache.jit_buffer_size 2M 2M opcache.jit_debug 256 256 opcache.jit_hot_func 127 127 opcache.jit_hot_loop 64 64 opcache.jit_hot_return 8 8 opcache.jit_hot_side_exit 8 8 opcache.jit_max_exit_counters 8192 8192 opcache.jit_max_loop_unrolls 8 8 opcache.jit_max_polymorphic_calls 2 2 opcache.jit_max_recursive_calls 2 2 opcache.jit_max_recursive_returns 2 2 opcache.jit_max_root_traces 1024 1024 opcache.jit_max_side_traces 128 128 opcache.jit_prof_threshold 0.005 0.005 opcache.lockfile_path /tmp /tmp opcache.log_verbosity_level 2 2 opcache.max_accelerated_files 1023 1023 opcache.max_file_size 0 0 opcache.max_wasted_percentage 5 5 opcache.memory_consumption 32 32 opcache.opt_debug_level 0 0 opcache.optimization_level 0x7FFEBFFF 0x7FFEBFFF opcache.preferred_memory_model no value no value opcache.preload no value no value opcache.preload_user www-data www-data opcache.protect_memory Off Off opcache.record_warnings Off Off opcache.restrict_api no value no value opcache.revalidate_freq 2 2 opcache.revalidate_path Off Off opcache.save_comments Off Off opcache.use_cwd On On opcache.validate_permission Off Off opcache.validate_root Off Off opcache.validate_timestamps Off Off

PHP Version

PHP 8.1.3

Operating System

Debain 11

nepster-web commented 2 years ago

yes, I have same problem.

PHP 8.1.5 and OS Ubuntu 20.04.3

This behavior occurs once half the time after deployment. In this case nginx shows error 502 and it is cured by restart (php-fpm docker container).

KipariS commented 2 years ago

@zebroid @cmb69 Have some updates of this??

jirkace commented 2 years ago

Maybe connected with #7817? Try to disable JIT or set it to 1205

nursoda commented 2 years ago

Maybe connected with #7817? Try to disable JIT or set it to 1205

Thanks a lot, Setting JIT to 1205 seems to help. I had set it to 1255 before.

agaitan026 commented 1 year ago

got almost same issue, with plesk control panel

Screenshot 2023-07-17 164834

attached picture, not sure how to fix that, that error make all my php website hang at the same time

PawelSkwaraSignalo commented 11 months ago

Same here:

image

PHP version:

PHP 8.1.2-1ubuntu2.14 (fpm-fcgi) (built: Aug 18 2023 11:41:11) Copyright (c) The PHP Group Zend Engine v4.1.2, Copyright (c) Zend Technologies with Zend OPcache v8.1.2-1ubuntu2.14, Copyright (c), by Zend Technologies

tkalfaoglu commented 7 months ago

any luck? seeing the same error in PLESK: PHP 8.2 this time..

Apr 01 13:37:30 kernel: php-fpm[63712]: segfault at 3a8c ip 00007f94479dd1ca sp 00007ffdebe9a140 error 4 in ld-2.28.so[7f94479d0000+2e000]