Re: [PATCH] perf session: Fix infinite loop on invalid perf.data file

From: Ingo Molnar
Date: Tue Oct 01 2013 - 11:33:24 EST



* David Ahern <dsahern@xxxxxxxxx> wrote:

> On 10/1/13 8:21 AM, Ingo Molnar wrote:
> >But if I understood it correctly this particular message could trigger for
> >regular users of perf as well, of the perf record is terminated in some
> >unusual fashion. Regular users might not have the perf code handy (and
> >might not know about git grep either).
>
> This is the case I was referring to -- normal users don't care about
> the code reference, hence the more specific question about how the
> perf-record session ended.

Hm, what do you call 'code reference'?

The message I suggested is:

WARNING: perf/header: Data size is 0. Was the 'perf record' command properly terminated?

I didn't intend 'perf/header' to be a code reference - it wanted to refer
to the perf.data header. Maybe that should be formulated in a less
confusing manner? Something like:

WARNING: The perf.data file's data size field is 0 which is unexpected.
Was the 'perf record' command properly terminated?

Thanks,

Ingo
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