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Date: Tue, 17 Mar 2015 15:10:51 +0100
From: Peter Zijlstra <peterz@infradead.org>
To: Jiri Olsa <jolsa@redhat.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>, linux-kernel@vger.kernel.org,
        Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>
Subject: Re: perf: fuzzer causes lockup in x86_pmu_event_init()
Message-ID: <20150317141051.GC23123@twins.programming.kicks-ass.net>
References: <alpine.DEB.2.11.1502171109390.26492@vincent-weaver-1.umelst.maine.edu>
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On Sat, Feb 28, 2015 at 01:14:42PM +0100, Jiri Olsa wrote:
> hum, I dont see the locking is a problem.. 

Well that validate stuff iterates the sibling list, and we're not
holding any of the requisite locks to do so. So I think we also need my
patch.

Agreed that its unlikely that this will be causing Vince's problem
though.