lkml.org 
[lkml]   [2008]   [Mar]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    Subjectendless loop in native_flush_tlb_others in smp_64.c
    Date
    Hi,

    ever since I moved to 2.6.25-rcY (Y should be between 2 and 5!).
    I've seen several, but really hard-to-catch instant freezes on my
    AMD64 Athlon X2 4200+ system...

    Most of them happend in X.org so at first I thought it had something to do
    with the NVIDIA module... BUT, one time it froze "a way before" the module
    could get loaded (and desynced my raid.......).

    ---
    SYSRQ-P revealed that the CPU were looping inside:

    smp_64.c native_flush_tlb_others:
    assembler code:
    < 1ee: f3 90 pause
    < 1f0: f6 45 00 03 testb $0x3,0x0(%rbp)
    < 1f4: 75 f8 jne 1ee <native_flush_tlb_others+0x5f>

    also known as: (in C)

    while (!cpus_empty(f->flush_cpumask))
    cpu_relax();

    So... has anyone a good idea what's happening here exactly? Or is there
    already another topic or even a patch available?

    Regards,
    Chr.


    \
     
     \ /
      Last update: 2008-03-10 23:21    [W:0.019 / U:30.828 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site