https://bugs.kde.org/show_bug.cgi?id=405377

--- Comment #5 from Mark Wielaard <m...@klomp.org> ---
For now I pushed the ENOSYS patch to make sure things just work with the new
glibc.

commit 1024237358f01009fe233cb1294f3b8211304eaa
Author: Mark Wielaard <m...@klomp.org>
Date:   Fri Dec 10 17:41:59 2021 +0100

    Implement linux rseq syscall as ENOSYS

    This implements rseq for amd64, arm, arm64, ppc32, ppc64,
    s390x and x86 linux as ENOSYS (without warning).

    glibc will start using rseq to accelerate sched_getcpu, if
    available. This would cause a warning from valgrind every
    time a new thread is started.

    Real rseq (restartable sequences) support is pretty hard, so
    for now just explicitly return ENOSYS (just like we do for clone3).

    https://sourceware.org/pipermail/libc-alpha/2021-December/133656.html

Leaving this bug open for a real implementation.

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