https://bugs.kde.org/show_bug.cgi?id=423963
Bug ID: 423963
Summary: Cannot spawn child process
Product: valgrind
Version: 3.15 SVN
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: memcheck
Assignee: jsew...@acm.org
Reporter: aklitz...@gmail.com
Target Milestone: ---
SUMMARY
An integration test should spawn a subprocess with QProcess of Qt. But valgrind
hangs and cannot spawn that child process.
STEPS TO REPRODUCE
1. Create a QTest that spawns with QProcess a child
2. Valgrind cannot spawn it and throws this error
3.
OBSERVED RESULT
EXPECTED RESULT
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Linux 5.7.7
(available in About System)
KDE Plasma Version: 5.19.2
KDE Frameworks Version: 5.71.0
Qt Version: 5.15.0
ADDITIONAL INFORMATION
valgrind -v --tool=memcheck --leak-check=full --show-leak-kinds=definite
--errors-for-leak-kinds=definite --error-exitcode=1 --gen-suppressions=all
--suppressions=/home/andre/hg/AusweisApp2/libs/test/valgrind.supp
--trace-children=yes test/qt/Test_ui_qml_UIPlugInQml
********* Start testing of test_UIPlugInQml *********
Config: Using QtTest library 5.15.0, Qt 5.15.0 (x86_64-little_endian-lp64
shared (dynamic) release build; by GCC 10.1.0)
--43990-- REDIR: 0x6bbf760 (libstdc++.so.6:operator delete[](void*)) redirected
to 0x483b520 (operator delete[](void*))
--43990-- REDIR: 0x6f045f0 (libc.so.6:__strstr_sse2_unaligned) redirected to
0x4841660 (strstr)
PASS : test_UIPlugInQml::initTestCase()
==43997== embedded gdbserver: reading from
/tmp/vgdb-pipe-from-vgdb-to-43997-by-andre-on-???
==43997== embedded gdbserver: writing to
/tmp/vgdb-pipe-to-vgdb-from-43997-by-andre-on-???
==43997== embedded gdbserver: shared mem
/tmp/vgdb-pipe-shared-mem-vgdb-43997-by-andre-on-???
==43997==
==43997== TO CONTROL THIS PROCESS USING vgdb (which you probably
==43997== don't want to do, unless you know exactly what you're doing,
==43997== or are doing some strange experiment):
==43997== /usr/lib/valgrind/../../bin/vgdb --pid=43997 ...command...
==43997==
==43997== TO DEBUG THIS PROCESS USING GDB: start GDB like this
==43997== /path/to/gdb test/qt/Test_ui_qml_UIPlugInQml
==43997== and then give GDB the following command
==43997== target remote | /usr/lib/valgrind/../../bin/vgdb --pid=43997
==43997== --pid is optional if only one valgrind process is running
==43997==
==43997== Warning: invalid file descriptor -16781608 in syscall clone()
==43997== at 0x6F5671D: syscall (in /usr/lib/libc-2.31.so)
==43997== by 0x6812C52: ??? (in /usr/lib/libQt5Core.so.5.15.0)
==43997== by 0x67F6C8B: ??? (in /usr/lib/libQt5Core.so.5.15.0)
==43997== by 0x154717: test_UIPlugInQml::test_qmlEngineInit()
(test_UIPlugInQml.cpp:147)
==43997== by 0x150F5D: test_UIPlugInQml::qt_static_metacall(QObject*,
QMetaObject::Call, int, void**) (test_UIPlugInQml.moc:84)
==43997== by 0x688DE35: QMetaMethod::invoke(QObject*, Qt::ConnectionType,
QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument,
QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument,
QGenericArgument, QGenericArgument, QGenericArgument) const (in
/usr/lib/libQt5Core.so.5.15.0)
==43997== by 0x48A7CF6: ??? (in /usr/lib/libQt5Test.so.5.15.0)
==43997== by 0x48A85B0: ??? (in /usr/lib/libQt5Test.so.5.15.0)
==43997== by 0x48A8B63: ??? (in /usr/lib/libQt5Test.so.5.15.0)
==43997== by 0x48A902D: QTest::qRun() (in /usr/lib/libQt5Test.so.5.15.0)
==43997== by 0x48A93DD: QTest::qExec(QObject*, int, char**) (in
/usr/lib/libQt5Test.so.5.15.0)
==43997== by 0x150EB4: main (test_UIPlugInQml.cpp:230)
valgrind: m_syswrap/syswrap-main.c:1957 (vgPlain_client_syscall): Assertion '0
== (sci->flags & ~(SfMayBlock | SfPostOnFail | SfPollAfter))' failed.
host stacktrace:
==43997== at 0x58041B2A: show_sched_status_wrk (m_libcassert.c:406)
==43997== by 0x58041C47: report_and_quit (m_libcassert.c:477)
==43997== by 0x58041DD7: vgPlain_assert_fail (m_libcassert.c:543)
==43997== by 0x5809AB4F: vgPlain_client_syscall (syswrap-main.c:1980)
==43997== by 0x5809617A: handle_syscall (scheduler.c:1208)
==43997== by 0x58098177: vgPlain_scheduler (scheduler.c:1526)
==43997== by 0x580E38D0: thread_wrapper (syswrap-linux.c:101)
==43997== by 0x580E38D0: run_a_thread_NORETURN (syswrap-linux.c:154)
sched status:
running_tid=1
Thread 1: status = VgTs_Runnable syscall 56 (lwpid 43997)
==43997== at 0x6F5671D: syscall (in /usr/lib/libc-2.31.so)
==43997== by 0x6812C52: ??? (in /usr/lib/libQt5Core.so.5.15.0)
==43997== by 0x67F6C8B: ??? (in /usr/lib/libQt5Core.so.5.15.0)
==43997== by 0x154717: test_UIPlugInQml::test_qmlEngineInit()
(test_UIPlugInQml.cpp:147)
==43997== by 0x150F5D: test_UIPlugInQml::qt_static_metacall(QObject*,
QMetaObject::Call, int, void**) (test_UIPlugInQml.moc:84)
==43997== by 0x688DE35: QMetaMethod::invoke(QObject*, Qt::ConnectionType,
QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument,
QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument,
QGenericArgument, QGenericArgument, QGenericArgument) const (in
/usr/lib/libQt5Core.so.5.15.0)
==43997== by 0x48A7CF6: ??? (in /usr/lib/libQt5Test.so.5.15.0)
==43997== by 0x48A85B0: ??? (in /usr/lib/libQt5Test.so.5.15.0)
==43997== by 0x48A8B63: ??? (in /usr/lib/libQt5Test.so.5.15.0)
==43997== by 0x48A902D: QTest::qRun() (in /usr/lib/libQt5Test.so.5.15.0)
==43997== by 0x48A93DD: QTest::qExec(QObject*, int, char**) (in
/usr/lib/libQt5Test.so.5.15.0)
==43997== by 0x150EB4: main (test_UIPlugInQml.cpp:230)
client stack range: [0x1FFEFFD000 0x1FFF000FFF] client SP: 0x1FFEFFEE28
valgrind stack range: [0x100307E000 0x100317DFFF] top usage: 13424 of 1048576
Note: see also the FAQ in the source distribution.
It contains workarounds to several common problems.
In particular, if Valgrind aborted or crashed after
identifying problems in your program, there's a good chance
that fixing those problems will prevent Valgrind aborting or
crashing, especially if it happened in m_mallocfree.c.
If that doesn't help, please report this bug to: www.valgrind.org
In the bug report, send all the above text, the valgrind
version, and what OS and version you are using. Thanks.
--43990-- REDIR: 0x6fbfd70 (libc.so.6:__strncpy_avx2) redirected to 0x483cf40
(strncpy)
QDEBUG : test_UIPlugInQml::test_qmlEngineInit(Android) ############
QFileInfo(/tmp/AusweisApp2.43997.port)
--43990-- REDIR: 0x6bbf730 (libstdc++.so.6:operator delete(void*)) redirected
to 0x483ae40 (operator delete(void*))
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