Re: Multithreaded program crashes on SMP (HT enabled) machine

From: Doug White (dwhite_at_gumbysoft.com)
Date: 04/30/05

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    Date: Fri, 29 Apr 2005 19:26:09 -0700 (PDT)
To: Adi Pircalabu <apircalabu@bitdefender.com>

    Dropping -hackers and -bugs

    On Wed, 27 Apr 2005, Adi Pircalabu wrote:

    > Hello,
    > I have a multithreaded application ported on FreeBSD 5.3 which crashes
    > in a minute or less if hyperthreading in enabled. Without HT there is no
    > problem.
    > How and where should I start to investigate the problem?
    >

    Can you expalin "crash"? Do you get any messages?

    > The backtrace:
    > (gdb) bt
    > #0 0x2819631b in pthread_testcancel () from /usr/lib/libpthread.so.1
    > #1 0x2818e902 in pthread_mutexattr_init () from
    > /usr/lib/libpthread.so.1 #2 0x00000000 in ?? ()

    This looks like a thread library mismatch. 

    -- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite@gumbysoft.com          |  www.FreeBSD.org
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