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IDProjectCategoryView StatusDate SubmittedLast Update
0001916XdebugUncategorizedpublic2020-12-16 00:402021-03-03 11:43
ReporterMr_What4 Assigned Toderick  
PrioritynormalSeveritycrashReproducibilityalways
Status feedbackResolutionopen 
Product Version3.0.1 
Summary0001916: Seeing a Segfault with XDebug 3.0.1 and PHP 7.2 - 8.0
DescriptionWhen running PHPCS with xdebug installed and enabled is causing a segfault:

Starting program: /usr/lib64/php7.4/bin/php -f vendor/bin/phpcs -- -s --standard=phpcs.xml
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[Detaching after vfork from child process 28607]
[Detaching after vfork from child process 28609]

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff4c9b390 in ?? ()
(gdb) bt
#0 0x00007ffff4c9b390 in ?? ()
#1 0x0000555555921e7e in tsrm_shutdown () at /var/tmp/portage/dev-lang/php-7.4.13/work/sapis-build/cli/TSRM/TSRM.c:215
0000002 0x00005555556b5f41 in main (argc=6, argv=0x55555658a100) at /var/tmp/portage/dev-lang/php-7.4.13/work/sapis-build/cli/sapi/cli/php_cli.c:1380

This only seems to happen with XDebug 3.0.1, 2.9.8 seems to work as expected.

Steps To Reproduce/usr/lib64/php7.4/bin/php -f vendor/bin/phpcs -- -s --standard=phpcs.xml
Additional InformationPHP version doesn't seem to matter, 7.4.13 was used for this backtrace.

squizlabs/php_codesniffer 3.5.8 PHP_CodeSniffer tokenizes PHP, JavaScript and CSS files and detects violations of a defined set of coding standards.


My xdebug.ini:

zend_extension=/usr/lib64/php7.4/lib/extensions/no-debug-zts-20190902/xdebug.so
;xdebug.auto_trace = 0
;xdebug.cli_color = 0
;xdebug.collect_assignments = 0
;xdebug.collect_includes = 1
;xdebug.collect_params = 0
;xdebug.collect_return = 0
;xdebug.collect_vars = 0
;xdebug.coverage_enable = 1
xdebug.default_enable = 0
;xdebug.dump.* = Empty
;xdebug.dump_globals = 1
;xdebug.dump_once = 1
;xdebug.dump_undefined = 0
;xdebug.extended_info = 1
;xdebug.file_link_format =
;xdebug.force_display_errors = 0
;xdebug.force_error_reporting = 0
;xdebug.halt_level = 0
;xdebug.idekey = *complex*
;xdebug.manual_url = http://www.php.net
;xdebug.max_nesting_level = 256
;xdebug.max_stack_frames = -1
;xdebug.overload_var_dump = 2
;xdebug.profiler_aggregate = 0
;xdebug.profiler_append = 0
;xdebug.profiler_enable = 0
;xdebug.profiler_enable_trigger = 0
;xdebug.profiler_enable_trigger_value = ""
;xdebug.profiler_output_dir = /tmp
;xdebug.profiler_output_name = cachegrind.out.%p
;xdebug.remote_addr_header = ""
;xdebug.remote_autostart = 0
;xdebug.remote_connect_back = 0
;xdebug.remote_cookie_expire_time = 3600
;xdebug.remote_enable = 0
;xdebug.remote_handler = dbgp
;xdebug.remote_host = localhost
;xdebug.remote_log =
;xdebug.remote_mode = req
;xdebug.remote_port = 9000
;xdebug.scream = 0
;xdebug.show_error_trace = 0
;xdebug.show_exception_trace = 0
;xdebug.show_local_vars = 0
;xdebug.show_mem_delta = 0
;xdebug.trace_enable_trigger = 0
;xdebug.trace_enable_trigger_value = ""
;xdebug.trace_format = 0
;xdebug.trace_options = 0
;xdebug.trace_output_dir = /tmp
;xdebug.trace_output_name = trace.%c
;xdebug.var_display_max_children = 128
;xdebug.var_display_max_data = 512
;xdebug.var_display_max_depth = 3

My phpcs.xml:

<?xml version="1.0"?>
<ruleset name="FaaPz PDO">
    <description>Just another PDO database library</description>

    <file>src/</file>
    <file>tests/</file>

    <!-- Include the whole PSR-1 standard -->
    <rule ref="PSR1"/>

    <!-- Include the whole PSR-2 standard -->
    <rule ref="PSR2"/>

    <!-- Include the whole PSR-12 standard -->
    <rule ref="PSR12"/>

    <!-- Include part of the Squiz standard -->
    <rule ref="Squiz">
        <exclude name="Generic.Commenting.DocComment.ContentAfterClose"/>
        <exclude name="Generic.Commenting.DocComment.ContentAfterOpen"/>
        <exclude name="Generic.Commenting.DocComment.ContentBeforeClose"/>
        <exclude name="Generic.Commenting.DocComment.MissingShort"/>
        <exclude name="Generic.Formatting.MultipleStatementAlignment.NotSame"/>
        <exclude name="PEAR.Functions.FunctionCallSignature.CloseBracketLine"/>
        <exclude name="PEAR.Functions.FunctionCallSignature.ContentAfterOpenBracket"/>
        <exclude name="Squiz.Arrays.ArrayDeclaration.SingleLineNotAllowed"/>
        <exclude name="Squiz.Commenting.ClassComment.Missing"/>
        <exclude name="Squiz.Commenting.ClassComment.TagNotAllowed"/>
        <exclude name="Squiz.Commenting.ClosingDeclarationComment.Missing"/>
        <exclude name="Squiz.Commenting.FileComment.MissingAuthorTag"/>
        <exclude name="Squiz.Commenting.FileComment.MissingPackageTag"/>
        <exclude name="Squiz.Commenting.FileComment.MissingSubpackageTag"/>
        <exclude name="Squiz.Commenting.FileComment.PackageTagOrder"/>
        <exclude name="Squiz.Commenting.FileComment.SpacingAfterOpen"/>
        <exclude name="Squiz.Commenting.FileComment.SubpackageTagOrder"/>
        <exclude name="Squiz.Commenting.FunctionComment.EmptyThrows"/>
        <exclude name="Squiz.Commenting.FunctionComment.IncorrectParamVarName"/>
        <exclude name="Squiz.Commenting.FunctionComment.InvalidReturn"/>
        <exclude name="Squiz.Commenting.FunctionComment.Missing"/>
        <exclude name="Squiz.Commenting.FunctionComment.MissingParamComment"/>
        <exclude name="Squiz.Commenting.LongConditionClosingComment.Missing"/>
        <exclude name="Squiz.Commenting.VariableComment.IncorrectVarType"/>
        <exclude name="Squiz.ControlStructures.ElseIfDeclaration.NotAllowed"/>
        <exclude name="Squiz.ControlStructures.SwitchDeclaration.BreakIndent"/>
        <exclude name="Squiz.ControlStructures.SwitchDeclaration.DefaultNoBreak"/>
        <exclude name="Squiz.Files.FileExtension.ClassFound"/>
        <exclude name="Squiz.Formatting.OperatorBracket.MissingBrackets"/>
        <exclude name="Squiz.Objects.ObjectInstantiation.NotAssigned"/>
        <exclude name="Squiz.Operators.ComparisonOperatorUsage.ImplicitTrue"/>
        <exclude name="Squiz.Operators.ComparisonOperatorUsage.NotAllowed"/>
        <exclude name="Squiz.PHP.DisallowMultipleAssignments.FoundInControlStructure"/>
        <exclude name="Squiz.Strings.ConcatenationSpacing.PaddingFound"/>
        <exclude name="Squiz.Strings.DoubleQuoteUsage.ContainsVar"/>
        <exclude name="Squiz.WhiteSpace.FunctionClosingBraceSpace.SpacingBeforeClose"/>
        <exclude name="Squiz.WhiteSpace.FunctionSpacing.After"/>
        <exclude name="Squiz.WhiteSpace.FunctionSpacing.AfterLast"/>
        <exclude name="Squiz.WhiteSpace.FunctionSpacing.Before"/>
        <exclude name="Squiz.WhiteSpace.FunctionSpacing.BeforeFirst"/>
        <exclude name="Squiz.WhiteSpace.MemberVarSpacing.FirstIncorrect"/>
        <exclude name="Squiz.WhiteSpace.ObjectOperatorSpacing.Before"/>
    </rule>
</ruleset>
TagsNo tags attached.
Operating System
PHP Version7.4.10-7.4.19

Activities

Mr_What4

2020-12-16 00:51

reporter   ~0005590

I put in the xdebug.ini from 2.9, here is my 3.0.1:

zend_extension=/usr/lib64/php7.4/lib/extensions/no-debug-zts-20190902/xdebug.so
;xdebug.cli_color = 0
;xdebug.client_discovery_header =
;xdebug.client_host = localhost
;xdebug.client_port = 9003
;xdebug.collect_params = 0
;xdebug.collect_return = 0
;xdebug.connect_timeout_ms = 200
;xdebug.discover_client_host = 0
;xdebug.dump.* = Empty
;xdebug.dump_globals = 1
;xdebug.dump_once = 1
;xdebug.dump_undefined = 0
;xdebug.file_link_format =
;xdebug.filename_format = ...%s%n
;xdebug.force_display_errors = 0
;xdebug.force_error_reporting = 0
;xdebug.gc_stats_output_name = gcstats.%p
;xdebug.halt_level = 0
;xdebug.idekey = *complex*
;xdebug.log =
;xdebug.log_level = 7
;xdebug.max_nesting_level = 256
;xdebug.max_stack_frames = -1
xdebug.mode=off
;xdebug.output_dir = /tmp
;xdebug.profiler_append = 0
;xdebug.profiler_output_name = cachegrind.out.%p
;xdebug.scream = 0
;xdebug.show_error_trace = 0
;xdebug.show_exception_trace = 0
;xdebug.show_local_vars = 0
;xdebug.start_upon_error = default
;xdebug.start_with_request = default
;xdebug.trace_format = 0
;xdebug.trace_options = 0
;xdebug.trace_output_dir = /tmp
;xdebug.trace_output_name = trace.%c
;xdebug.trigger_value = ""
;xdebug.var_display_max_children = 128
;xdebug.var_display_max_data = 512
;xdebug.var_display_max_depth = 3

derick

2020-12-17 15:00

administrator   ~0005591

Can you provide the exact steps (git clone, composer install, etc) for me to try to reproduce this problem?

Mr_What4

2020-12-17 15:55

reporter   ~0005593

Hi Derick,

Thanks for taking a look at this. I am using gentoo AMD Ryzen 7 3700X 8-Core Processor, cflags = "-march=native -mtune=native -O2 -ftree-vectorize -fomit-frame-pointer -ggdb -pipe". Composer version: 1.10.15

The following produces two segfaults. First segfault happens on composer install and the second on phpcs. Seems to happen every time for me.

git clone git@github.com:FaaPz/PDO.git
composer install
vendor/bin/phpcs -s --standard=phpcs.xml

Mr_What4

2021-01-19 02:59

reporter   ~0005639

Problem still persists with xdebug 3.0.2

derick

2021-01-20 11:28

administrator   ~0005641

I have tried reproducing this (with xdebug 3.0.3-dev), but I am not getting any segfault, or any other warnings when running with valgrind like this either:

<code>
USE_ZEND_ALLOC=0 valgrind php -f vendor/bin/phpcs -- -s --standard=phpcs.xml
</code>

Your original backtrace doesn't show that Xdebug is involved in the crash either... So unless you can come up with something that allows me to see the problem locally, I am not sure what I can do.

Mr_What4

2021-01-25 16:22

reporter   ~0005659

This bug is the same as https://bugs.xdebug.org/view.php?id=1934, my best guess is xdebug is getting unloaded twice but I'll see if I can get a better trace in the other bug.

dinu

2021-02-03 13:04

reporter   ~0005665

I got a bunch of segfaults yesterday that started out as php errors, but were crashing fpm. I haven't investigated them but my best guess is Xdebug (call me grinch :D). Have you managed to reproduce it or should I try to rollback the code and see if I can generate a dump?

Mr_What4

2021-02-03 15:11

reporter   ~0005666

I can reproduce it every time I run php but my GDB skills are pretty poor. This segfault seems to be related to unloading the xdebug extension when ZTS is enabled. I suspect it is getting unloaded twice or this is some other type of race condition going on when PHP is cleaning itself up. If you have an idea about something I should try with GDB or anything else let me know. If I disable ZTS things do work normally.

My configuration:

./configure --prefix=/usr --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --docdir=/usr/share/doc/php-7.4.14-r1 --htmldir=/usr/share/doc/php-7.4.14-r1/html --prefix=/usr/lib64/php7.4 --mandir=/usr/lib64/php7.4/man --infodir=/usr/lib64/php7.4/info --libdir=/usr/lib64/php7.4/lib --with-libdir=lib64 --localstatedir=/var --without-pear --enable-maintainer-zts --without-password-argon2 --enable-bcmath --with-bz2=/usr --disable-calendar --disable-gcov --enable-ctype --with-curl --enable-dom --without-enchant --disable-exif --without-ffi --enable-fileinfo --enable-filter --enable-ftp --with-gettext=/usr --without-gmp --without-mhash --with-iconv --disable-intl --disable-ipv6 --enable-json --without-kerberos --with-libxml --enable-mbstring --with-openssl --enable-pcntl --enable-phar --enable-pdo --enable-opcache --without-pgsql --enable-posix --with-pspell=/usr --enable-simplexml --disable-shmop --without-snmp --enable-soap --enable-sockets --without-sodium --with-sqlite3 --enable-sysvmsg --enable-sysvsem --enable-sysvshm --without-tidy --enable-tokenizer --enable-xml --disable-xmlreader --enable-xmlwriter --without-xmlrpc --without-xsl --with-zip --with-zlib=/usr --disable-debug --enable-dba --without-cdb --with-db4=/usr --enable-flatfile --with-gdbm=/usr --disable-inifile --without-qdbm --without-tcadb --without-lmdb --without-freetype --disable-gd-jis-conv --without-jpeg --without-xpm --without-webp --disable-gd --without-mysqli --with-mysql-sock=/var/run/mysqld/mysqld.sock --without-unixODBC --without-iodbc --without-pdo-odbc --without-oci8 --without-pdo-dblib --with-pdo-mysql=mysqlnd --without-pdo-pgsql --with-pdo-sqlite --without-pdo-firebird --without-pdo-oci --with-readline=/usr --without-libedit --without-mm --with-pic --with-external-pcre --without-pcre-jit --cache-file=/var/tmp/portage/dev-lang/php-7.4.14-r1/temp/config.cache --with-config-file-path=/etc/php/cli-php7.4 --with-config-file-scan-dir=/etc/php/cli-php7.4/ext-active --disable-embed --enable-cli --disable-cgi --disable-fpm --without-apxs2 --disable-phpdbg

catalin.nicolescu

2021-02-15 07:28

reporter   ~0005667

Confirming this. Using the docker image 7.3-apache-stretch with "pecl install xdebug" and XDEBUG_MODE="develop,debug" XDEBUG_CONFIG="cli_color=1 client_host=192.168.64.1 client_port=9000 discover_client_host=0 start_with_request=1"
Seeing segmentation faults on random phpunit tests
Had to revert back to 2.9.8

BitWire

2021-02-19 16:26

reporter   ~0005691

I can reproduce this error in a docker container running php7.3 & xdebug 3.0.2. Random tests are failing, depending if i call phpunit with or without --testdox. It only happens with xdebug.mode=develop. every other mode is fine, and every combination without develop is fine.
I attached a gdb stacktrace.
stacktrace.txt (4,957 bytes)    
#0  0x0000563a6ae485a2 in _emalloc_56 ()
#1  0x0000563a6ae7b499 in _zend_new_array_0 ()
#2  0x0000563a6ad9aefd in ?? ()
#3  0x00007f515813c315 in xdebug_execute_internal (current_execute_data=0x7f5158623ec0, return_value=0x7f5158623eb0) at ./build-7.3/src/base/base.c:921
#4  0x0000563a6acbf10f in ?? ()
#5  0x0000563a6aef8096 in execute_ex ()
#6  0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f5158623e30) at ./build-7.3/src/base/base.c:803
#7  0x0000563a6acbf097 in ?? ()
#8  0x0000563a6aef8096 in execute_ex ()
#9  0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f5158623d50) at ./build-7.3/src/base/base.c:803
#10 0x0000563a6acbf097 in ?? ()
#11 0x0000563a6aef8096 in execute_ex ()
#12 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f5158623c50) at ./build-7.3/src/base/base.c:803
#13 0x0000563a6acbf097 in ?? ()
#14 0x0000563a6aef8096 in execute_ex ()
#15 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f5158623a40) at ./build-7.3/src/base/base.c:803
#16 0x0000563a6acbed59 in ?? ()
#17 0x0000563a6aef8096 in execute_ex ()
#18 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f51586238a0) at ./build-7.3/src/base/base.c:803
#19 0x0000563a6acbed59 in ?? ()
#20 0x0000563a6aef8096 in execute_ex ()
#21 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f5158623710) at ./build-7.3/src/base/base.c:803
#22 0x0000563a6acbed59 in ?? ()
#23 0x0000563a6aef8096 in execute_ex ()
#24 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f51586236a0) at ./build-7.3/src/base/base.c:803
#25 0x0000563a6acbed59 in ?? ()
#26 0x0000563a6aef8096 in execute_ex ()
#27 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f5158623520) at ./build-7.3/src/base/base.c:803
#28 0x0000563a6acbed59 in ?? ()
#29 0x0000563a6aef8096 in execute_ex ()
#30 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f5158623410) at ./build-7.3/src/base/base.c:803
#31 0x0000563a6acbed59 in ?? ()
#32 0x0000563a6aef8096 in execute_ex ()
#33 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f5158623370) at ./build-7.3/src/base/base.c:803
#34 0x0000563a6acbf097 in ?? ()
#35 0x0000563a6aef8096 in execute_ex ()
#36 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f5158623300) at ./build-7.3/src/base/base.c:803
#37 0x0000563a6acbed59 in ?? ()
#38 0x0000563a6aef8096 in execute_ex ()
#39 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f51586231e0) at ./build-7.3/src/base/base.c:803
#40 0x0000563a6acbed59 in ?? ()
#41 0x0000563a6aef8096 in execute_ex ()
#42 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f5158623160) at ./build-7.3/src/base/base.c:803
#43 0x0000563a6acbed59 in ?? ()
#44 0x0000563a6aef8096 in execute_ex ()
#45 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f51586229f0) at ./build-7.3/src/base/base.c:803
#46 0x0000563a6acbed59 in ?? ()
#47 0x0000563a6aef8096 in execute_ex ()
#48 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f51586219e0) at ./build-7.3/src/base/base.c:803
#49 0x0000563a6acbed59 in ?? ()
#50 0x0000563a6aef8096 in execute_ex ()
#51 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f5158620f20) at ./build-7.3/src/base/base.c:803
#52 0x0000563a6acbed59 in ?? ()
#53 0x0000563a6aef8096 in execute_ex ()
#54 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f5158620830) at ./build-7.3/src/base/base.c:803
#55 0x0000563a6acbed59 in ?? ()
#56 0x0000563a6aef8096 in execute_ex ()
#57 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f5158620140) at ./build-7.3/src/base/base.c:803
#58 0x0000563a6acbed59 in ?? ()
#59 0x0000563a6aef8096 in execute_ex ()
#60 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f515861fa50) at ./build-7.3/src/base/base.c:803
---Type <return> to continue, or q <return> to quit---
#61 0x0000563a6acbed59 in ?? ()
#62 0x0000563a6aef8096 in execute_ex ()
#63 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f515861d6a0) at ./build-7.3/src/base/base.c:803
#64 0x0000563a6acbf097 in ?? ()
#65 0x0000563a6aef8096 in execute_ex ()
#66 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f515861d2b0) at ./build-7.3/src/base/base.c:803
#67 0x0000563a6acbf097 in ?? ()
#68 0x0000563a6aef8096 in execute_ex ()
#69 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f515861d200) at ./build-7.3/src/base/base.c:803
#70 0x0000563a6acbed59 in ?? ()
#71 0x0000563a6aef8096 in execute_ex ()
#72 0x00007f515813ba39 in xdebug_execute_ex (execute_data=0x7f515861d030) at ./build-7.3/src/base/base.c:803
#73 0x0000563a6aefe7d3 in zend_execute ()
#74 0x0000563a6ae6f692 in zend_execute_scripts ()
#75 0x0000563a6ae0f4f0 in php_execute_script ()
#76 0x0000563a6af00cfc in ?? ()
#77 0x0000563a6acc7806 in ?? ()
#78 0x00007f515b314bf7 in __libc_start_main (main=0x563a6acc73f0, argc=3, argv=0x7ffca238f0c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffca238f0b8) at ../csu/libc-start.c:310
#79 0x0000563a6acc79aa in _start ()
(gdb)
stacktrace.txt (4,957 bytes)   

vincent

2021-03-02 09:58

reporter   ~0005699

Same issue on a private repository (can't provide source code to reproduce)
Random segfault when execute phpunit tests on our dev docker container (with xDebug)
Work fine with our production container (without xDebug)

PHP 8.0.0 (cli) (built: Dec 1 2020 03:33:03) ( NTS )
Copyright (c) The PHP Group
Zend Engine v4.0.0-dev, Copyright (c) Zend Technologies
    with Zend OPcache v8.0.0, Copyright (c), by Zend Technologies
    with Xdebug v3.0.3, Copyright (c) 2002-2021, by Derick Rethans


[Xdebug]
xdebug.max_nesting_level = 1000
xdebug.remote_enable=On
xdebug.remote_port=9500
xdebug.remote_connect_back=On
xdebug.idekey=PHPSTORM
xdebug.remote_host=localhost
xdebug.cli_color=1
xdebug.var_display_max_depth=10
scratch.txt (3,394 bytes)    
(gdb) bt
#0  0x0000564c8a624a8c in zend_call_function ()
#1  0x0000564c8a6256c5 in zend_call_known_function ()
#2  0x0000564c8a6b4014 in zend_objects_destroy_object ()
#3  0x0000564c8a6b88c7 in zend_objects_store_del ()
#4  0x00007f7683ecda9d in function_stack_entry_dtor (elem=0x564c8b5ba840) at /tmp/pear/temp/xdebug/src/base/base.c:122
#5  0x00007f7683ecec37 in xdebug_vector_pop (v=0x564c8b71c010) at /tmp/pear/temp/xdebug/src/lib/vector.h:64
#6  xdebug_execute_ex (execute_data=0x7f766039d500) at /tmp/pear/temp/xdebug/src/base/base.c:792
#7  0x0000564c8a6ae062 in zend_generator_resume ()
#8  0x0000564c8a682ce9 in ?? ()
#9  0x0000564c8a692a67 in execute_ex ()
#10 0x00007f7683ecebc6 in xdebug_execute_ex (execute_data=0x7f76650bbe00) at /tmp/pear/temp/xdebug/src/base/base.c:765
#11 0x0000564c8a6ae062 in zend_generator_resume ()
#12 0x0000564c8a682ce9 in ?? ()
#13 0x0000564c8a692a67 in execute_ex ()
#14 0x00007f7683ecebc6 in xdebug_execute_ex (execute_data=0x7f7683c19810) at /tmp/pear/temp/xdebug/src/base/base.c:765
#15 0x0000564c8a6983c9 in execute_ex ()
#16 0x00007f7683ecebc6 in xdebug_execute_ex (execute_data=0x7f7683c196a0) at /tmp/pear/temp/xdebug/src/base/base.c:765
#17 0x0000564c8a6983c9 in execute_ex ()
#18 0x00007f7683ecebc6 in xdebug_execute_ex (execute_data=0x7f7683c192f0) at /tmp/pear/temp/xdebug/src/base/base.c:765
#19 0x0000564c8a69950b in execute_ex ()
#20 0x00007f7683ecebc6 in xdebug_execute_ex (execute_data=0x7f7683c18e40) at /tmp/pear/temp/xdebug/src/base/base.c:765
#21 0x0000564c8a69950b in execute_ex ()
#22 0x00007f7683ecebc6 in xdebug_execute_ex (execute_data=0x7f7683c18720) at /tmp/pear/temp/xdebug/src/base/base.c:765
#23 0x0000564c8a6983c9 in execute_ex ()
#24 0x00007f7683ecebc6 in xdebug_execute_ex (execute_data=0x7f7683c17550) at /tmp/pear/temp/xdebug/src/base/base.c:765
#25 0x0000564c8a6983c9 in execute_ex ()
#26 0x00007f7683ecebc6 in xdebug_execute_ex (execute_data=0x7f7683c16900) at /tmp/pear/temp/xdebug/src/base/base.c:765
#27 0x0000564c8a6983c9 in execute_ex ()
#28 0x00007f7683ecebc6 in xdebug_execute_ex (execute_data=0x7f7683c16200) at /tmp/pear/temp/xdebug/src/base/base.c:765
#29 0x0000564c8a6983c9 in execute_ex ()
#30 0x00007f7683ecebc6 in xdebug_execute_ex (execute_data=0x7f7683c15b00) at /tmp/pear/temp/xdebug/src/base/base.c:765
#31 0x0000564c8a6983c9 in execute_ex ()
#32 0x00007f7683ecebc6 in xdebug_execute_ex (execute_data=0x7f7683c136d0) at /tmp/pear/temp/xdebug/src/base/base.c:765
#33 0x0000564c8a69950b in execute_ex ()
#34 0x00007f7683ecebc6 in xdebug_execute_ex (execute_data=0x7f7683c13300) at /tmp/pear/temp/xdebug/src/base/base.c:765
#35 0x0000564c8a69950b in execute_ex ()
#36 0x00007f7683ecebc6 in xdebug_execute_ex (execute_data=0x7f7683c131f0) at /tmp/pear/temp/xdebug/src/base/base.c:765
#37 0x0000564c8a6983c9 in execute_ex ()
#38 0x00007f7683ecebc6 in xdebug_execute_ex (execute_data=0x7f7683c13020) at /tmp/pear/temp/xdebug/src/base/base.c:765
#39 0x0000564c8a69a8ee in zend_execute ()
#40 0x0000564c8a6329dd in zend_execute_scripts ()
#41 0x0000564c8a5d00fe in php_execute_script ()
#42 0x0000564c8a6c004e in ?? ()
#43 0x0000564c8a35d7cb in ?? ()
#44 0x00007f7686d5909b in __libc_start_main (main=0x564c8a35d380, argc=3, argv=0x7ffd43973288, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd43973278) at ../csu/libc-start.c:308
#45 0x0000564c8a35df0a in _start ()
scratch.txt (3,394 bytes)   

Mr_What4

2021-03-03 06:39

reporter   ~0005700

Hi Derick,

I have tracked the issue to `--disable-debug` configuration. If it is disabled, it crashes for me every time with `php -v` and xdebug 3.0.x. I am not sure why this is the case as I can't really get a good stack trace without `--enable -debug` but hopefully this can help reproduce the issue.

derick

2021-03-03 11:43

administrator   ~0005702

Hi,

I've just tried reproducing this again, but it still does not produce any crashes, or valgrind errors with php 7.4.13 in non-debug mode, and Xdebug also not compiled in debug mode. Perhaps this is a compiler or libc inconsistency, but as long as I can't reproduce this... I'm going to be in the dark.

If somebody can manage to create a docker setup, where I can ssh-in and run a PHP CLI command, and where also gdb, valgrind, and strace are installed, I can give that a go.

cheers,
Derick

Issue History

Date Modified Username Field Change
2020-12-16 00:40 Mr_What4 New Issue
2020-12-16 00:51 Mr_What4 Note Added: 0005590
2020-12-17 15:00 derick Assigned To => derick
2020-12-17 15:00 derick Status new => feedback
2020-12-17 15:00 derick Note Added: 0005591
2020-12-17 15:55 Mr_What4 Note Added: 0005593
2020-12-17 15:55 Mr_What4 Status feedback => assigned
2021-01-19 02:59 Mr_What4 Note Added: 0005639
2021-01-20 11:28 derick Status assigned => feedback
2021-01-20 11:28 derick Note Added: 0005641
2021-01-25 16:22 Mr_What4 Note Added: 0005659
2021-01-25 16:22 Mr_What4 Status feedback => assigned
2021-02-03 13:04 dinu Note Added: 0005665
2021-02-03 15:11 Mr_What4 Note Added: 0005666
2021-02-15 07:28 catalin.nicolescu Note Added: 0005667
2021-02-19 16:26 BitWire Note Added: 0005691
2021-02-19 16:26 BitWire File Added: stacktrace.txt
2021-03-02 09:58 vincent Note Added: 0005699
2021-03-02 09:58 vincent File Added: scratch.txt
2021-03-03 06:39 Mr_What4 Note Added: 0005700
2021-03-03 11:43 derick Note Added: 0005702
2021-03-03 11:43 derick Status assigned => feedback