Re: [PATCH trace-cmd] plugin_kvm: disassemble instructions for kvm_emulate_insn

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 On 09/24/2010 05:24 AM, Steven Rostedt wrote:
  >
>  Note 2: I get output of the form
>
>  ... kvm_emulate_insn:     0:fffff800010527b5: mov $0x0, 0xfffe00b0CAN'T FIND FIELD "guest_rip"
>
>  which leads me to believe there is a bug in trace_seq_printf when the input
>  to %s is "".

I ran this under gdb (nice to do that, where I don't in kernel :-)  And
it takes me to kvm_emulate_insn_handler() which does the
trace_seq_printf() fine, but then calls pevent_print_num_field() and
that passes in "guest_rip" where we get the "CAN'T FIND FIELD" error.

In pevent_print_num_field() it searches for "guest_rip" at the top of
the function (pevent_find_field()), but the event kvm_emulate_insn does
not have a "guest_rip" field, then it jumps to the error message.



Gah, what idiot used copy-paste there?

I'll post a patch to remove that line.

--
error compiling committee.c: too many arguments to function

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