linux-kernel - Re: [PATCH] perf: correctly handle failed perf_get_aux_event() (was: Re: [perf] perf_event

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Message-ID: <alpine.DEB.2.21.2001161144590.29041@macbook-air>
Date:   Thu, 16 Jan 2020 11:45:45 -0500 (EST)
From:   Vince Weaver <vincent.weaver@...ne.edu>
To:     Vince Weaver <vincent.weaver@...ne.edu>
cc:     Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>
Subject: Re: [PATCH] perf: correctly handle failed perf_get_aux_event() (was:
 Re: [perf] perf_event_open() sometimes returning 0)

On Mon, 6 Jan 2020, Vince Weaver wrote:

> On Mon, 6 Jan 2020, Mark Rutland wrote:
> 
> > On Thu, Jan 02, 2020 at 02:22:47PM -0500, Vince Weaver wrote:
> > > On Thu, 2 Jan 2020, Vince Weaver wrote:
> > > 
> > Vince, does the below (untested) patch work for you?
> 
> 
> yes, this patch fixes things for me.
> 
> Tested-by: Vince Weaver <vincent.weaver@...ne.edu>
> 

is this patch going to make it upstream?  It's a fairly major correctness 
bug with perf_event_open().

Vince