Messages in this thread | | | Date | Sat, 6 Jul 2013 00:21:48 +0200 (CEST) | From | Thomas Gleixner <> | Subject | RE: Yet more softlockups. |
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On Fri, 5 Jul 2013, Seiji Aguchi wrote: > > -----Original Message----- > > Hmmm... this makes me wonder if the interrupt tracepoint stuff is at > > fault here, as it changes the IDT handling for NMI context. > > This softlockup happens while disabling the interrupt tracepoints, > Because if it is enabled, "smp_trace_apic_timer_interrupt" is displayed > instead of "smp_apic_timer_interrupt" in the call trace below. > > But I can't say anything how this issue is related to the tracepoint stuff,
I doubt it is related. I rather suspect that trinity is able to fuzz perf into a DoS facility.
Dave, can you trace the perf sys calls and dump that data over serial when the softlockup hits?
Thanks,
tglx
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