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

From: Arnaldo Carvalho de Melo
Date: Tue Oct 01 2013 - 12:54:56 EST


Em Tue, Oct 01, 2013 at 05:33:09PM +0200, Ingo Molnar escreveu:
>
> * 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:

I liked this last one:

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

Can I patch that up into Namhyung's latest patch?

Sonny, David, from your replies I think I can add Tested-by: tags for
both of you?

Thanks,

- Arnaldo
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