Messages in this thread | | | Date | Tue, 11 Mar 2008 12:09:24 +0100 (CET) | From | Thomas Gleixner <> | Subject | Re: endless loop in native_flush_tlb_others in smp_64.c |
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On Tue, 11 Mar 2008, Jike Song wrote: > > 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?
Any chance that you can capture SYSRQ-T output via serial or netconsole, so we can see the stacktrace and what the other CPUs are doing, if they are doing anything.
Thanks, tglx
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