https://bugs.kde.org/show_bug.cgi?id=492886
--- Comment #5 from localtoast <ipsum.te.fu...@gmail.com> --- (In reply to Sam James from comment #4) > That Valgrind issue looks like a bug in Valgrind, see > https://bugs.kde.org/show_bug.cgi?id=381819. You can try the patch there or > just try ASAN and UBSAN instead. Thanks for the direction. I patched valgrind and ran again. Still got exactly the same error, but also some output which might be more relevant: ==1135== Memcheck, a memory error detector ==1135== Copyright (C) 2002-2024, and GNU GPL'd, by Julian Seward et al. ==1135== Using Valgrind-3.23.1.GIT and LibVEX; rerun with -h for copyright info ==1135== Command: plasmashell ==1135== Detected locale "en_US.iso88591" with character encoding "ISO-8859-1", which is not UTF-8. Qt depends on a UTF-8 locale, and has switched to "en_US.UTF-8" instead. If this causes problems, reconfigure your locale. See the locale(1) manual for more information. ==1135== Syscall param writev(vector[0]) points to uninitialised byte(s) ==1135== at 0x76A59DF: writev (in /usr/lib64/libc.so.6) ==1135== by 0x4BF3702: ??? (in /usr/lib64/libxcb.so.1.1.0) ==1135== by 0x4BF3F70: ??? (in /usr/lib64/libxcb.so.1.1.0) ==1135== by 0x4BF5574: ??? (in /usr/lib64/libxcb.so.1.1.0) ==1135== by 0x4BF55EE: xcb_wait_for_reply (in /usr/lib64/libxcb.so.1.1.0) ==1135== by 0xD8BA5D2: QXcbConnection::initializeScreensFromMonitor(xcb_screen_iterator_t*, int, QXcbScreen**, bool) (qxcbconnection_screens.cpp:501) ==1135== by 0xD8BBCD7: QXcbConnection::initializeScreens(bool) (qxcbconnection_screens.cpp:317) ==1135== by 0xD8B3018: QXcbConnection::QXcbConnection(QXcbNativeInterface*, bool, unsigned int, char const*) (qxcbconnection.cpp:72) ==1135== by 0xD8D600D: QXcbIntegration::QXcbIntegration(QList<QString> const&, int&, char**) (qxcbintegration.cpp:170) ==1135== by 0x48584E7: QXcbIntegrationPlugin::create(QString const&, QList<QString> const&, int&, char**) (qxcbmain.cpp:22) ==1135== by 0x66F46B7: init_platform(QString const&, QString const&, QString const&, int&, char**) (qguiapplication.cpp:1249) ==1135== by 0x66F760F: QGuiApplicationPrivate::createPlatformIntegration() (qguiapplication.cpp:1533) ==1135== Address 0xcf5c115 is 4,533 bytes inside a block of size 21,176 alloc'd ==1135== at 0x4847B6B: calloc (vg_replace_malloc.c:1675) ==1135== by 0x4BF30DF: xcb_connect_to_fd (in /usr/lib64/libxcb.so.1.1.0) ==1135== by 0x4BF7BC8: xcb_connect_to_display_with_auth_info (in /usr/lib64/libxcb.so.1.1.0) ==1135== by 0x8218699: _XConnectXCB (in /usr/lib64/libX11.so.6.4.0) ==1135== by 0x8209288: XOpenDisplay (in /usr/lib64/libX11.so.6.4.0) ==1135== by 0xD8B7D92: QXcbBasicConnection::QXcbBasicConnection(char const*) (qxcbconnection_basic.cpp:77) ==1135== by 0xD8B2E13: QXcbConnection::QXcbConnection(QXcbNativeInterface*, bool, unsigned int, char const*) (qxcbconnection.cpp:62) ==1135== by 0xD8D600D: QXcbIntegration::QXcbIntegration(QList<QString> const&, int&, char**) (qxcbintegration.cpp:170) ==1135== by 0x48584E7: QXcbIntegrationPlugin::create(QString const&, QList<QString> const&, int&, char**) (qxcbmain.cpp:22) ==1135== by 0x66F46B7: init_platform(QString const&, QString const&, QString const&, int&, char**) (qguiapplication.cpp:1249) ==1135== by 0x66F760F: QGuiApplicationPrivate::createPlatformIntegration() (qguiapplication.cpp:1533) ==1135== by 0x66F81E7: QGuiApplicationPrivate::createEventDispatcher() (qguiapplication.cpp:1552) ==1135== Uninitialised value was created by a stack allocation ==1135== at 0xD8A2510: ??? (in /usr/lib64/libQt6XcbQpa.so.6.7.2) ==1135== vex amd64->IR: unhandled instruction bytes: 0x8F 0xE8 0x70 0xA2 0xC3 0x0 0xC5 0xFB 0x11 0x83 vex amd64->IR: REX=0 REX.W=0 REX.R=0 REX.X=0 REX.B=0 vex amd64->IR: VEX=0 VEX.L=0 VEX.nVVVV=0x1 ESC=0F vex amd64->IR: PFX.66=0 PFX.F2=0 PFX.F3=0 ==1135== valgrind: Unrecognised instruction at address 0x6742559. ==1135== at 0x6742559: QScreen::QScreen(QPlatformScreen*) (qscreen.cpp:53) ==1135== by 0x675A218: QWindowSystemInterface::handleScreenAdded(QPlatformScreen*, bool) (qwindowsysteminterface.cpp:716) ==1135== by 0xD8BBDEF: QXcbConnection::initializeScreens(bool) (qxcbconnection_screens.cpp:347) ==1135== by 0xD8B3018: QXcbConnection::QXcbConnection(QXcbNativeInterface*, bool, unsigned int, char const*) (qxcbconnection.cpp:72) ==1135== by 0xD8D600D: QXcbIntegration::QXcbIntegration(QList<QString> const&, int&, char**) (qxcbintegration.cpp:170) ==1135== by 0x48584E7: QXcbIntegrationPlugin::create(QString const&, QList<QString> const&, int&, char**) (qxcbmain.cpp:22) ==1135== by 0x66F46B7: init_platform(QString const&, QString const&, QString const&, int&, char**) (qguiapplication.cpp:1249) ==1135== by 0x66F760F: QGuiApplicationPrivate::createPlatformIntegration() (qguiapplication.cpp:1533) ==1135== by 0x66F81E7: QGuiApplicationPrivate::createEventDispatcher() (qguiapplication.cpp:1552) ==1135== by 0x70A7E5D: QCoreApplicationPrivate::init() (qcoreapplication.cpp:905) ==1135== by 0x66FA86F: QGuiApplicationPrivate::init() (qguiapplication.cpp:1580) ==1135== by 0x52FF4CC: QApplicationPrivate::init() (qapplication.cpp:472) ==1135== Your program just tried to execute an instruction that Valgrind ==1135== did not recognise. There are two possible reasons for this. ==1135== 1. Your program has a bug and erroneously jumped to a non-code ==1135== location. If you are running Memcheck and you just saw a ==1135== warning about a bad jump, it's probably your program's fault. ==1135== 2. The instruction is legitimate but Valgrind doesn't handle it, ==1135== i.e. it's Valgrind's fault. If you think this is the case or ==1135== you are not sure, please let us know and we'll try to fix it. ==1135== Either way, Valgrind will now raise a SIGILL signal which will ==1135== probably kill your program. ==1135== ==1135== Process terminating with default action of signal 4 (SIGILL) ==1135== Illegal opcode at address 0x6742559 ==1135== at 0x6742559: QScreen::QScreen(QPlatformScreen*) (qscreen.cpp:53) ==1135== by 0x675A218: QWindowSystemInterface::handleScreenAdded(QPlatformScreen*, bool) (qwindowsysteminterface.cpp:716) ==1135== by 0xD8BBDEF: QXcbConnection::initializeScreens(bool) (qxcbconnection_screens.cpp:347) ==1135== by 0xD8B3018: QXcbConnection::QXcbConnection(QXcbNativeInterface*, bool, unsigned int, char const*) (qxcbconnection.cpp:72) ==1135== by 0xD8D600D: QXcbIntegration::QXcbIntegration(QList<QString> const&, int&, char**) (qxcbintegration.cpp:170) ==1135== by 0x48584E7: QXcbIntegrationPlugin::create(QString const&, QList<QString> const&, int&, char**) (qxcbmain.cpp:22) ==1135== by 0x66F46B7: init_platform(QString const&, QString const&, QString const&, int&, char**) (qguiapplication.cpp:1249) ==1135== by 0x66F760F: QGuiApplicationPrivate::createPlatformIntegration() (qguiapplication.cpp:1533) ==1135== by 0x66F81E7: QGuiApplicationPrivate::createEventDispatcher() (qguiapplication.cpp:1552) ==1135== by 0x70A7E5D: QCoreApplicationPrivate::init() (qcoreapplication.cpp:905) ==1135== by 0x66FA86F: QGuiApplicationPrivate::init() (qguiapplication.cpp:1580) ==1135== by 0x52FF4CC: QApplicationPrivate::init() (qapplication.cpp:472) ==1135== ==1135== HEAP SUMMARY: ==1135== in use at exit: 465,768 bytes in 2,705 blocks ==1135== total heap usage: 4,531 allocs, 1,826 frees, 723,348 bytes allocated ==1135== ==1135== LEAK SUMMARY: ==1135== definitely lost: 0 bytes in 0 blocks ==1135== indirectly lost: 0 bytes in 0 blocks ==1135== possibly lost: 3,520 bytes in 6 blocks ==1135== still reachable: 460,232 bytes in 2,678 blocks ==1135== of which reachable via heuristic: ==1135== newarray : 2,000 bytes in 14 blocks ==1135== suppressed: 0 bytes in 0 blocks ==1135== Rerun with --leak-check=full to see details of leaked memory ==1135== ==1135== For lists of detected and suppressed errors, rerun with: -s ==1135== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0) -- You are receiving this mail because: You are watching all bug changes.
