opcache random error with 8.4.0rc2 [Windows]

[nono303]

Description

Hi!

I've noticed intermittent errors on 8.4.0rc2 (under windows) that I didn't have with 8.4.0rc1

My use case:

• own build for Windows x64 NTS VS17
• using php-cgi with httpd mod_fcgid
• browsing on phpMyAdmin (all hit go to index.php router)
• 🔴 having random 500 response status

! 500	 /phpmyadmin/index.php?route=/sql&pos=0&db=mydatabase&table=table1
200	 /phpmyadmin/index.php?route=%2Fmessages&l=fr&v=6.0.0-dev%2B20241009.5a82f71580
200	 /phpmyadmin/index.php?route=/navigation&ajax_request=1
200	 /phpmyadmin/index.php?route=/console/update-config
200	 /phpmyadmin/index.php?route=/database/structure/favorite-table&ajax_request=1&favorite_table=1&sync_favorite_tables=1
200	 /phpmyadmin/index.php?route=/version-check
200	 /phpmyadmin/index.php?route=/database/structure&db=mydatabase
! 500	 /phpmyadmin/index.php?route=/navigation&ajax_request=1
200	 /phpmyadmin/index.php?route=/console/update-config
! 500	 /phpmyadmin/index.php?route=/sql&pos=0&db=mydatabase&table=table2
200	 /phpmyadmin/index.php?route=/error-report
200	 /phpmyadmin/index.php?route=/navigation&ajax_request=1
200	 /phpmyadmin/index.php?route=/sql&pos=0&db=mydatabase&table=table2
200	 /phpmyadmin/index.php?route=/error-report
200	 /phpmyadmin/index.php?route=/sql&pos=0&db=mydatabase&table=table5
200	 /phpmyadmin/index.php?route=%2Fmessages&l=fr&v=6.0.0-dev%2B20241009.5a82f71580
200	 /phpmyadmin/index.php?route=/navigation&ajax_request=1
200	 /phpmyadmin/index.php?route=/console/update-config
200	 /phpmyadmin/index.php?route=/navigation&ajax_request=1
! 500	 /phpmyadmin/index.php?route=/sql&pos=0&db=mydatabase&table=table3
! 500	 /phpmyadmin/index.php?route=/sql&pos=0&db=mydatabase&table=table5
200	 /phpmyadmin/index.php?route=/sql&pos=0&db=mydatabase&table=table4
200	 /phpmyadmin/index.php?route=%2Fmessages&l=fr&v=6.0.0-dev%2B20241009.5a82f71580
200	 /phpmyadmin/index.php?route=/navigation&ajax_request=1
200	 /phpmyadmin/index.php?route=/console/update-config
200	 /phpmyadmin/index.php?route=/navigation&ajax_request=1
! 500	 /phpmyadmin/index.php?route=/sql&pos=0&db=mydatabase&table=table6

• ❌ no log in php error.log
• ❌ no error in opcache log opcache.log_verbosity_level=4
• ❌ no entriy in Windows Event Log Viewer
• just having mod_fcgid error in http log

2024-10-15 08:29:31.552563 mydomain 1.2.3.4:56396 Zw4Ly_ss--S531oNTzivwAAAALg fcgid:warn fcgid_proc_win.c(363) pid:26776 tid:3724 ka:58 [get overlap result error]
2024-10-15 08:29:31.552563 mydomain 1.2.3.4:56396 Zw4Ly_ss--S531oNTzivwAAAALg core:error util_script.c(503) pid:26776 tid:3724 ka:58 [End of script output before headers: index.php]

... FcgidErrorScanInterval:60 secondes

2024-10-15 08:30:32.431166 - - - fcgid:info fcgid_proc_win.c(504) pid:26776 tid:976 [mydomain:C:/serveur/php/php-cgi.exe(39904) exit(-1073741819) communication error]
2024-10-15 08:30:32.431166 - - - fcgid:info fcgid_proc_win.c(504) pid:26776 tid:976 [mydomain:C:/serveur/php/php-cgi.exe(19048) exit(-1073741819) communication error]
2024-10-15 08:30:32.431166 - - - fcgid:info fcgid_proc_win.c(504) pid:26776 tid:976 [mydomain:C:/serveur/php/php-cgi.exe(28860) exit(-1073741819) communication error]
2024-10-15 08:30:32.431166 - - - fcgid:info fcgid_proc_win.c(504) pid:26776 tid:976 [mydomain:C:/serveur/php/php-cgi.exe(17540) exit(1) connect error, server may has exited]

Disabling opcache on 8.4.0rc2: ✅ no random 500
Rolling back to 8.4.0rc1 with opcahce enabled: ✅ no random 500

⏩ available to detail or perform other tests as needed

PHP Version

PHP 8.4.0-rc2

Operating System

Windows 11 x64 vs17 NTS

[iluuu1994]

Hi @nono303. There are many changes between RC1 and RC2. It would be helpful if you could extract a crash log.

https://bugs.php.net/bugs-generating-backtrace-win32.php

[nono303]

I'm already in debug mode and no dmp file were produced

1. configure

phpsdk-config_make for 8.4
configure --disable-cli-win32 --disable-debug --disable-embed --disable-ipv6 --disable-phpdbg --disable-phpdbgs --disable-security-flags --disable-test-ini --enable-debug-pack --enable-fd-setsize=2048 --enable-object-out-dir=../build/ --without-analyzer --without-enchant --without-snmp --without-ldap --without-pgsql --without-uncritical-warn-choke --with-toolset=vs --with-cygwin=C:\sdk\softs\cyg64\bin --with-extra-includes=C:\sdk\release\vs17_x64-avx2\_openssl\openssl\include;C:\sdk\release\vs17_x64-avx2\include;C:\sdk\release\vs17_x64-avx2\_proj\include;C:\sdk\release\vs17_x64-avx2\_gdal\include --with-extra-libs=C:\sdk\release\vs17_x64-avx2\_openssl\openssl\lib;C:\sdk\release\vs17_x64-avx2\lib;C:\sdk\release\vs17_x64-avx2\_proj\lib;C:\sdk\release\vs17_x64-avx2\_gdal\lib --with-mp=16 --enable-mbstring=shared --enable-phar-native-ssl --enable-brotli=shared --enable-com-dotnet=shared --enable-exif=shared --enable-fileinfo=shared --enable-ftp=shared --enable-intl=shared --enable-opcache=shared --enable-pdo=shared --enable-soap=shared --enable-sockets=shared --with-bz2=shared --with-curl=shared --with-iconv=C:\sdk\release\vs17_x64-avx2 --with-mysqli=shared --with-openssl=shared --with-pdo-mysql=shared --with-pdo-sqlite=shared --with-sqlite3=shared --with-tidy=shared --with-xdiff=shared --with-geos=shared --with-sodium=shared --with-xml=shared --enable-xmlreader=shared --enable-xmlwriter=shared --with-simplexml=shared --with-dom=shared --with-iconv=shared --enable-zip=shared --enable-zlib=shared --with-readline=shared --enable-pdo=shared --enable-calendar=shared --enable-ctype=shared --enable-bcmath=shared --with-gd=shared --with-xsl=shared --with-gmp=shared --enable-zstd=shared --with-libxml=shared --with-proj=shared --with-ogr=shared --enable-memcache=shared --with-xdebug=shared --with-xdebug-compression --enable-timezonedb=shared --enable-sync=shared --disable-zts --enable-native-intrinsics=sse,sse2,sse3,ssse3,sse4.1,sse4.2,avx,avx2 --enable-sanitizer --with-php-build=C:\sdk\release\vs17_x64-avx2 --with-openssl-argon2 
PHP Version: 8.4.0RC2

2. result

C:\sdk\release\vs17_x64-avx2\_php-nts\php-cgi.exe
C:\sdk\release\vs17_x64-avx2\_php-nts\php-cgi.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php.exe
C:\sdk\release\vs17_x64-avx2\_php-nts\php.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php8.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php8.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_bcmath.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_bcmath.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_brotli.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_brotli.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_bz2.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_bz2.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_calendar.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_calendar.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_com_dotnet.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_com_dotnet.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_ctype.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_ctype.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_curl.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_curl.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_dom.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_dom.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_exif.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_exif.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_fileinfo.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_fileinfo.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_ftp.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_ftp.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_gd.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_gd.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_geos.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_geos.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_gmp.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_gmp.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_iconv.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_iconv.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_intl.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_intl.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_mbstring.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_mbstring.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_memcache.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_memcache.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_mysqli.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_mysqli.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_ogr.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_ogr.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_opcache.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_opcache.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_openssl.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_openssl.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_pdo_mysql.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_pdo_mysql.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_pdo_sqlite.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_pdo_sqlite.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_proj.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_proj.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_readline.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_readline.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_simplexml.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_simplexml.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_soap.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_soap.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_sockets.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_sockets.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_sodium.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_sodium.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_sqlite3.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_sqlite3.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_sync.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_sync.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_tidy.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_tidy.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_timezonedb.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_timezonedb.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_xdebug.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_xdebug.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_xdiff.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_xdiff.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_xml.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_xml.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_xmlreader.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_xmlreader.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_xmlwriter.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_xmlwriter.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_xsl.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_xsl.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_zip.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_zip.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_zlib.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_zlib.pdb
C:\sdk\release\vs17_x64-avx2\_php-nts\php_zstd.dll
C:\sdk\release\vs17_x64-avx2\_php-nts\php_zstd.pdb
C:\sdk\release\vs17_x64-avx2\lib\php8.lib

3. AeDebugger

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebug]
"UserDebuggerHotKey"=dword:00000000
"Auto"="1"
"Debugger"="\"C:\\Program Files\\wscc\\sysinternals\\procdump64.exe\" -accepteula -ma -j \"R:\\procdump\" %ld %ld %p"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebug\AutoExclusionList]
"DWM.exe"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebug\ProcDump]

[iluuu1994]

I can't help with Windows, maybe @cmb69 can?

[cmb69]

mydomain:C:/serveur/php/php-cgi.exe(39904) exit(-1073741819) communication error

That is a segfault error code; I have no idea why you don't get a crash dump. Maybe register WinDbg as post mortem debugger. Or use VS 2022 to attach to the FCGI PHP processes.

Also, do the crashes happen only with OPcache JIT enabled? If so, which settings do you use (especially, opcache.jit and opcache.jit_buffer_size)?

[cmb69]

Oh, also try without Xdebug.

[nono303]

Oh, also try without Xdebug.

Xdebug is not enabled

which settings do you use (especially, opcache.jit and opcache.jit_buffer_size)?

opcache.jit=tracing
opcache.jit_buffer_size=100M

my full opcache config running without problem since PHP 8.1...

Opcode Caching	Up and Running
Optimization	Enabled
SHM Cache	Enabled
File Cache	Disabled
JIT	On
Startup	OK
Shared memory model	win32
Cache hits	275
Cache misses	20
Used memory	74200008
Free memory	2073283640
Wasted memory	0
Interned Strings Used memory	17347768
Interned Strings Free memory	49761096
Cached scripts	20
Cached keys	59
Max keys	130987
OOM restarts	0
Hash keys restarts	0
Manual restarts	0
Start time	2024-10-15T16:21:36+0200
Last restart time	none
Last force restart time	none

Directive	Local Value
opcache.blacklist_filename	no value
opcache.cache_id	php8
opcache.dups_fix	Off
opcache.enable	On
opcache.enable_cli	Off
opcache.enable_file_override	On
opcache.error_log	d:/php/logs/opcache.log
opcache.file_cache	no value
opcache.file_cache_consistency_checks	Off
opcache.file_cache_fallback	Off
opcache.file_cache_only	Off
opcache.file_update_protection	0
opcache.force_restart_timeout	180
opcache.interned_strings_buffer	64
opcache.jit	tracing
opcache.jit_bisect_limit	0
opcache.jit_blacklist_root_trace	16
opcache.jit_blacklist_side_trace	8
opcache.jit_buffer_size	100M
opcache.jit_debug	0
opcache.jit_hot_func	127
opcache.jit_hot_loop	64
opcache.jit_hot_return	8
opcache.jit_hot_side_exit	8
opcache.jit_max_exit_counters	8192
opcache.jit_max_loop_unrolls	8
opcache.jit_max_polymorphic_calls	2
opcache.jit_max_recursive_calls	2
opcache.jit_max_recursive_returns	2
opcache.jit_max_root_traces	1024
opcache.jit_max_side_traces	128
opcache.jit_max_trace_length	1024
opcache.jit_prof_threshold	0.005
opcache.log_verbosity_level	2
opcache.max_accelerated_files	65535
opcache.max_file_size	0
opcache.max_wasted_percentage	10
opcache.memory_consumption	2048
opcache.mmap_base	0x0000700000000000
opcache.opt_debug_level	0
opcache.optimization_level	0x7FFEBFFF
opcache.preferred_memory_model	no value
opcache.preload	no value
opcache.protect_memory	Off
opcache.record_warnings	On
opcache.restrict_api	no value
opcache.revalidate_freq	0
opcache.revalidate_path	Off
opcache.save_comments	Off
opcache.use_cwd	On
opcache.validate_permission	Off
opcache.validate_timestamps	On

[cmb69]

Okay, can you please try running without OPcache JIT? If that doesn't error we know at least that the issue is JIT related.

Still, we need some crash dump/backtrace (although that might not really help, especially if JIT related).