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()
Date: Tue, 17 Mar 2015 15:10:51 +0100 [thread overview]
Message-ID: <20150317141051.GC23123@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20150228121442.GA1653@krava>
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.
next prev parent reply other threads:[~2015-03-17 14:11 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-17 16:17 perf: fuzzer causes lockup in x86_pmu_event_init() Vince Weaver
2015-02-24 3:56 ` Vince Weaver
2015-02-25 15:16 ` Peter Zijlstra
2015-02-28 12:14 ` Jiri Olsa
2015-03-02 19:13 ` Vince Weaver
2015-03-04 10:32 ` Jiri Olsa
2015-03-17 13:55 ` Jiri Olsa
2015-03-17 14:11 ` Peter Zijlstra
2015-03-17 15:00 ` Vince Weaver
2015-03-17 14:10 ` Peter Zijlstra [this message]
2015-03-27 11:46 ` [tip:perf/core] perf: Fix racy group access tip-bot for Peter Zijlstra
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