A bug occurred in Swoole-v5.1.1, please report it. about swoole-src

[NathanFreeman]

https://wiki.swoole.com/zh-cn/#/other/tools?id=gdb
https://wiki.swoole.com/zh-cn/#/other/issue?id=关于段错误核心转储
看看能不能通过gdb贴一下程序出现问题的栈堆

[fpysky]

GNU gdb (Ubuntu 12.1-0ubuntu1~22.04) 12.1
Copyright (C) 2022 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".
Attaching to process 35353
[New LWP 35357]
[New LWP 35358]
[New LWP 35359]
[New LWP 35360]
[New LWP 35361]
[New LWP 35362]
[New LWP 35363]
[New LWP 35364]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x0000701e81725e2e in epoll_wait (epfd=34, events=0x5a8a6efd1d70, maxevents=4096, timeout=1000) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
30 ../sysdeps/unix/sysv/linux/epoll_wait.c: 没有那个文件或目录.

[fpysky]

GNU gdb (Ubuntu 12.1-0ubuntu1~22.04) 12.1 Copyright (C) 2022 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". Attaching to process 35353 [New LWP 35357] [New LWP 35358] [New LWP 35359] [New LWP 35360] [New LWP 35361] [New LWP 35362] [New LWP 35363] [New LWP 35364] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". 0x0000701e81725e2e in epoll_wait (epfd=34, events=0x5a8a6efd1d70, maxevents=4096, timeout=1000) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30 30 ../sysdeps/unix/sysv/linux/epoll_wait.c: 没有那个文件或目录.

这是 gdb -p master进程ID

[NathanFreeman]

https://wiki.swoole.com/zh-cn/#/other/issue?id=关于段错误核心转储
看看能不能生成core文件，或者把SWOOLE_PROCESS模式换成SWOOLE_BASE模式，看看这问题还会不会发生

[fpysky]

https://wiki.swoole.com/zh-cn/#/other/issue?id=关于段错误核心转储 看看能不能生成core文件，或者把SWOOLE_PROCESS模式换成SWOOLE_BASE模式，看看这问题还会不会发生

改成SWOOLE_BASE错误依旧，生成core文件要重新编译swoole扩展，不过我是通过apt install php8.1-swoole 这种方式安装的，重新编译相同版本的安装就不知道能不能复现了，我可以试试

[NathanFreeman]

看一下php -m输出一下扩展列表

[fpysky]

[PHP Modules]
calendar
Core
ctype
curl
date
dom
exif
FFI
fileinfo
filter
ftp
gd
gettext
hash
http
iconv
igbinary
json
libxml
mbstring
mysqli
mysqlnd
openssl
pcntl
pcre
PDO
pdo_mysql
Phar
posix
raphf
readline
redis
Reflection
session
shmop
SimpleXML
sockets
sodium
SPL
standard
swoole
sysvmsg
sysvsem
sysvshm
tokenizer
xdebug
xml
xmlreader
xmlwriter
xsl
yaml
Zend OPcache
zip
zlib

[Zend Modules]
Xdebug
Zend OPcache

[NathanFreeman]

屏蔽掉Xdebug试试看

[fpysky]

卸载xdebug就正常了，不是说8.1后xdebug可以用了吗

[NathanFreeman]

php --ri xdebug看看xdebug详细信息，swoole5.1修改过一次跟xdebug有关的bug，可能是新的问题，我要看看

[fpysky]

xdebug

---

\ \ / / | | | |
\ V / __| | _| | _ _ __ _

< / |/ _ \ '_ \| | | |/ _ |
/ . \ (| | / |) | || | (| |
// __,|_|.__/ _,|_, |
/ |
|_/

Version => 3.3.2
Support Xdebug on Patreon, GitHub, or as a business: https://xdebug.org/support

         Enabled Features (through 'xdebug.mode' setting)             

Feature => Enabled/Disabled
Development Helpers => ✔ enabled
Coverage => ✘ disabled
GC Stats => ✘ disabled
Profiler => ✘ disabled
Step Debugger => ✘ disabled
Tracing => ✘ disabled

                        Optional Features                            

Compressed File Support => yes (gzip)
Clock Source => clock_gettime
'xdebug://gateway' pseudo-host support => yes
'xdebug://nameserver' pseudo-host support => yes
Systemd Private Temp Directory => not enabled

Directive => Local Value => Master Value
xdebug.mode => develop => develop
xdebug.start_with_request => default => default
xdebug.start_upon_error => default => default
xdebug.output_dir => /tmp => /tmp
xdebug.use_compression => 1 => 1
xdebug.trigger_value => no value => no value
xdebug.file_link_format => no value => no value
xdebug.filename_format => no value => no value
xdebug.control_socket => time: 25ms => time: 25ms
xdebug.log => no value => no value
xdebug.log_level => 7 => 7
xdebug.var_display_max_children => 128 => 128
xdebug.var_display_max_data => 512 => 512
xdebug.var_display_max_depth => 3 => 3
xdebug.max_nesting_level => 512 => 512
xdebug.cli_color => 0 => 0
xdebug.force_display_errors => Off => Off
xdebug.force_error_reporting => 0 => 0
xdebug.halt_level => 0 => 0
xdebug.max_stack_frames => -1 => -1
xdebug.show_error_trace => Off => Off
xdebug.show_exception_trace => Off => Off
xdebug.show_local_vars => Off => Off
xdebug.dump.COOKIE => no value => no value
xdebug.dump.ENV => no value => no value
xdebug.dump.FILES => no value => no value
xdebug.dump.GET => no value => no value
xdebug.dump.POST => no value => no value
xdebug.dump.REQUEST => no value => no value
xdebug.dump.SERVER => no value => no value
xdebug.dump.SESSION => no value => no value
xdebug.dump_globals => On => On
xdebug.dump_once => On => On
xdebug.dump_undefined => Off => Off
xdebug.profiler_output_name => cachegrind.out.%p => cachegrind.out.%p
xdebug.profiler_append => Off => Off
xdebug.cloud_id => no value => no value
xdebug.client_host => localhost => localhost
xdebug.client_port => 9003 => 9003
xdebug.discover_client_host => Off => Off
xdebug.client_discovery_header => HTTP_X_FORWARDED_FOR,REMOTE_ADDR => HTTP_X_FORWARDED_FOR,REMOTE_ADDR
xdebug.idekey => no value => no value
xdebug.connect_timeout_ms => 200 => 200
xdebug.scream => Off => Off
xdebug.gc_stats_output_name => gcstats.%p => gcstats.%p
xdebug.trace_output_name => trace.%c => trace.%c
xdebug.trace_format => 0 => 0
xdebug.trace_options => 0 => 0
xdebug.collect_assignments => Off => Off
xdebug.collect_params => On => On
xdebug.collect_return => Off => Off
xdebug.auto_trace => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.collect_includes => (setting removed in Xdebug 3) => (setting removed in Xdebug 3)
xdebug.collect_vars => (setting removed in Xdebug 3) => (setting removed in Xdebug 3)
xdebug.coverage_enable => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.default_enable => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.gc_stats_enable => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.gc_stats_output_dir => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.overload_var_dump => (setting removed in Xdebug 3) => (setting removed in Xdebug 3)
xdebug.profiler_enable => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.profiler_enable_trigger => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.profiler_enable_trigger_value => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.profiler_output_dir => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_autostart => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_connect_back => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_enable => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_host => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_log => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_log_level => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_mode => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_port => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_timeout => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.show_mem_delta => (setting removed in Xdebug 3) => (setting removed in Xdebug 3)
xdebug.trace_output_dir => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.trace_enable_trigger => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.trace_enable_trigger_value => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)

[NathanFreeman]

我没法复现这个问题，看看能不能提供一份最小化代码以供复现

[fpysky]

hyperf-demo.zip

[dhobi]

Sorry for hijacking this thread. I just wanted to share my observation that crashes stop happening for me when I disable the xdebug (3.3.2) extension.

php8.3-swoole5.1.1

When does the crash happen:
The crash, if xdebug is enabled, happens in a task worker which is listening for events on a redis queue (subscribe). Whenever the redis connection is forcibly closed by the redis server (due to inactivity), the task worker crashes and is automatically restarted by swoole.
If xdebug is not enabled, my code is able to handle the close event and create a new redis client & subscribe like intended.

[NathanFreeman]

@fpysky 我发现是xdebug的max_nesting_level参数设置成了512，如果是某个循环超过512次，就会抛出PHP Fatal error直接终止进程

[NathanFreeman]

@dhobi I found that the max_nesting_level parameter of xdebug is set to 512. If a certain loop exceeds 512 times, a PHP Fatal error will be thrown, terminating the process.

[dhobi]

@NathanFreeman thx for this! What is your proposed fix / workaround here? Simply raise max_nesting_level to a higher number? Would it help if I test it with my "crashing scenario"?

[linuxd3v]

I've raised the max_nesting_level in xdebug to 50000, but this bug still happens.
xdebug 3.3.2, xdebug.max_nesting_level => 50000 => 50000

sandbox-sb.6red-swoole8.1  | [2024-05-20 13:05:00 #12.0]        WARNING Server::check_worker_exit_status(): worker(pid=60, id=9) abnormal exit, status=0, signal=11
sandbox-sb.6red-swoole8.1  | A bug occurred in Swoole-v5.1.1, please report it.
sandbox-sb.6red-swoole8.1  | The Swoole developers probably don't know about it,
sandbox-sb.6red-swoole8.1  | and unless you report it, chances are it won't be fixed.
sandbox-sb.6red-swoole8.1  | You can read How to report a bug doc before submitting any bug reports:
sandbox-sb.6red-swoole8.1  | >> https://github.com/swoole/swoole-src/blob/master/.github/ISSUE.md 
sandbox-sb.6red-swoole8.1  | Please do not send bug reports in the mailing list or personal letters.
sandbox-sb.6red-swoole8.1  | The issue page is also suitable to submit feature requests.
sandbox-sb.6red-swoole8.1  | 
sandbox-sb.6red-swoole8.1  | OS: Linux 6.2.0-1012-aws #12~22.04.1-Ubuntu SMP Thu Sep  7 14:01:24 UTC 2023 x86_64
sandbox-sb.6red-swoole8.1  | GCC_VERSION: 11.4.0
sandbox-sb.6red-swoole8.1  | OPENSSL_VERSION: OpenSSL 3.0.2 15 Mar 2022
sandbox-sb.6red-swoole8.1  | PHP_VERSION : 8.1.2-1ubuntu2.17
sandbox-sb.6red-swoole8.1  | 
sandbox-sb.6red-swoole8.1  | [2024-05-20T09:05:00.530238-04:00] MWCOM-APP.NOTICE: WorkerErrorListener:closePools (workerId = 9)

[NathanFreeman]

@dhobi @linuxd3v I don't have a good solution for xdebug. There are too many configurations for xdebug, unless we can find out through the logs which specific configuration is causing PHP to throw a fatal error.