linux-kernel - Re: perf list segfaults on the v4.4-rc8 (bisect log added)

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Message-ID: <20160108210138.GA12833@ast-mbp.thefacebook.com>
Date:	Fri, 8 Jan 2016 13:01:39 -0800
From:	Alexei Starovoitov <alexei.starovoitov@...il.com>
To:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Alexei Starovoitov <ast@...nel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Anshuman Khandual <khandual@...ux.vnet.ibm.com>
Subject: Re: perf list segfaults on the v4.4-rc8 (bisect log added)

On Sat, Jan 09, 2016 at 02:09:41AM +0530, Srikar Dronamraju wrote:
> With latest mainline perf, perf list results in a Segmentation fault on
> a powerpc machine.
> 
> $ ./perf list
> Segmentation fault (core dumped)
> $
..
> Attached is the patch that causes this issue for quick reference.
> 
> From a43eec304259a6c637f4014a6d4767159b6a3aa3 Mon Sep 17 00:00:00 2001
> From: Alexei Starovoitov <ast@...mgrid.com>
> Date: Tue, 20 Oct 2015 20:02:34 -0700
> Subject: [PATCH] bpf: introduce bpf_perf_event_output() helper

https://lkml.org/lkml/2016/1/8/330
this pull req contains the fix.
Pls double check.