The CI upgrade from opensuse Qt6.2 to 6.4 caused this. I've change the 3 tests that were failing to skip when running Qt6.4. The freebsd_qt64 CI appears to work. The executable on my Qt6.4 opensuse also crashes upon startup. Maybe https://bugreports.qt.io/browse/QTBUG-82351 I'm not sure how to resolve this in KDE/Konsole Trace from someone in IRC ==19147== Syscall param waitid(infop) points to unaddressable byte(s) ==19147== at 0x90238CD: syscall (syscall.S:38) ==19147== by 0x87D7458: sys_waitid(int, int, siginfo_t*, int, rusage*) (forkfd_linux.c:67) ==19147== by 0x87D74D3: detect_clone_pidfd_support() (forkfd_linux.c:127) ==19147== by 0x87D7539: system_forkfd_availability() (forkfd_linux.c:140) ==19147== by 0x87D7610: system_vforkfd(int, int*, int (*)(void*), void*, int*) (forkfd_linux.c:164) ==19147== by 0x87D71DD: vforkfd (forkfd.c:814) ==19147== by 0x87ADDA1: QProcessPrivate::startProcess() (qprocess_unix.cpp:472) ==19147== by 0x87A326B: QProcessPrivate::start(QFlags<QIODeviceBase::OpenModeFlag>) (qprocess.cpp:2163) ==19147== by 0x87A2CC9: QProcess::start(QFlags<QIODeviceBase::OpenModeFlag>) (qprocess.cpp:1992) ==19147== by 0x492CBDA: Konsole::Pty::start(QString const&, QList<QString> const&, QList<QString> const&) (Pty.cpp:282) ==19147== by 0x4A35AFF: Konsole::Session::run() (Session.cpp:510) ==19147== by 0xE37BF0F: Konsole::Part::showShellInDir(QString const&) (Part.cpp:135) ==19147== Address 0x0 is not stack'd, malloc'd or (recently) free'd ==19147==
This is probably the first thing that valgrind printed, but is not your issue. The info parameter to waitid() does not need to be null. The man page says: "Linux, if infop is NULL, waitid() succeeds, and returns the process ID of the waited-for child. Applications should avoid relying on this inconsistent, nonstandard, and unnecessary feature." That particular code testing the kernel, so we can rely on the behaviour-specific content.