linux-kernel - Re: [PATCH v2 02/10] perf, tools, stat: Avoid memory overrun with -r

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Message-ID: <20190319193346.GN3029@kernel.org>
Date:   Tue, 19 Mar 2019 16:33:46 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     Andi Kleen <ak@...ux.intel.com>
Cc:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>,
        Andi Kleen <andi@...stfloor.org>, jolsa@...nel.org,
        linux-perf-users@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 02/10] perf, tools, stat: Avoid memory overrun with -r

Em Tue, Mar 19, 2019 at 12:20:23PM -0700, Andi Kleen escreveu:
> > mmap size 8192B
> > perf: util/evlist.c:533: perf_evlist__id_add: Assertion `evsel->ids < evsel->sample_id->max_x * evsel->sample_id->max_y' failed.
> 
> I suspect this is a latent bug just caught by my assert.
> 
> So it was already broken.
> 
> You could of course remove the assert, but it would merely
> hide it.

I'm removing it just for the moment, I'll definetely revisit this.

- Arnaldo