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    SubjectRe: [BUG] kvm crashes in 2.6.28-rc6-00007-ged31348
    Steven Rostedt wrote:



    >> In arch/x86/kvm/svm.c, function svm_vcpu_run(), everything between the
    >> vmrun instruction and the call to load_host_msrs() is executed without a
    >> live pda, so no smp_processor_id(). Could easily be fixed by
    >> rearranging things.
    >>
    >
    > That would be best, but if you have trouble, you could surround the
    > trouble area with a: tracing_stop(); tracing_start(); That will prevent
    > tracing within those locations. The function tracer will still be
    > called, but it will exit the function without doing anything else.
    >
    > Note: that stops tracing on all CPUS, not just the CPU that called it.
    >

    The vmrun instruction can execute for a long time (hours, if you have a
    dyntick kernel and no timers scheduled), so that's less than optimal.

    --
    I have a truly marvellous patch that fixes the bug which this
    signature is too narrow to contain.



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