libpthread problem (segfaults)

From: Benjamin Lutz (benlutz_at_datacomm.ch)
Date: 05/30/05

  • Next message: Billy Newsom: "Re: 5-Stable (5.4) any ipnat changes?" 
    Date: Mon, 30 May 2005 05:31:56 +0200
To: freebsd-stable@freebsd.org

    Hello,

    I've run into an issue that has me stumped. Anything that I link against
    libpthread on my FreeBSD-5.4-RELEASE/i386 installation will segfault as
    soon as it tries making use of the threads. For example:

    $ kedit
    zsh: segmentation fault (core dumped) kedit
    $ gdb `which kedit` -c kedit.core
    [...]
    (gdb) backtrace
    #0 0x29524ac7 in __error () from /usr/lib/libpthread.so.1
    #1 0x2951755f in _pthread_mutex_trylock () from /usr/lib/libpthread.so.1
    #2 0x29518aca in pthread_mutex_lock () from /usr/lib/libpthread.so.1
    #3 0x290cc580 in QRealMutexPrivate::lock () from
    /usr/X11R6/lib/libqt-mt.so.3
    #4 0x290cc8b4 in QMutex::lock () from /usr/X11R6/lib/libqt-mt.so.3
    #5 0x28e1a4b9 in insert_tree () from /usr/X11R6/lib/libqt-mt.so.3
    #6 0x28e1a618 in QObject::QObject () from /usr/X11R6/lib/libqt-mt.so.3
    #7 0x28de4514 in QGuardedPtrPrivate::QGuardedPtrPrivate () from
    /usr/X11R6/lib/libqt-mt.so.3
    #8 0x28d6215b in __static_initialization_and_destruction_0 () from
    /usr/X11R6/lib/libqt-mt.so.3
    #9 0x28d6220a in global constructors keyed to qt_xdnd_enter () from
    /usr/X11R6/lib/libqt-mt.so.3
    #10 0x291b9122 in __do_global_ctors_aux () from /usr/X11R6/lib/libqt-mt.so.3
    #11 0x28d1417a in _init () from /usr/X11R6/lib/libqt-mt.so.3
    #12 0x2804fb91 in find_symdef () from /libexec/ld-elf.so.1
    #13 0x2804e77c in _rtld () from /libexec/ld-elf.so.1
    #14 0x2804d9f6 in .rtld_start () from /libexec/ld-elf.so.1
    (gdb)

    This behaviour started appearing after the installation of
    FreeBSD-5.4-RELEASE. I've rebuilt libpthread and qt (I've used qt's own
    uic program as a test, it's affected by this problem too), removed any
    contents of libmap.conf, and there's nothing special in make.conf, the
    problem persists though.

    Also, only programs/libraries that I compiled after the installation of
    FreeBSD-5.4 are affected. Programs that have been compiled under
    FreeBSD-5.3 run just fine.

    Can you give me any pointers as to what exactly is broken on my system,
    and where I should start with fixing things?

    Thanks
    Benjamin

  • Next message: Billy Newsom: "Re: 5-Stable (5.4) any ipnat changes?"

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