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Date: Wed, 28 May 2014 15:56:17 +0200
From: Pavel Machek <pavel@ucw.cz>
To: Vince Weaver <vincent.weaver@maine.edu>
Cc: linux-kernel@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@kernel.org>, Cyrill Gorcunov <gorcunov@openvz.org>
Subject: Re: perf_fuzzer crash on pentium 4
Message-ID: <20140528135617.GA25750@amd.pavel.ucw.cz>
References: <alpine.DEB.2.10.1405061137560.3220@vincent-weaver-1.umelst.maine.edu>
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Hi!

> So just to be difficult I fired up the perf_fuzzer on a Pentium 4 machine.
> 
> It crashes more or less instantly (sorry for the line wrapping, 
> just got the serial console hooked up and don't have minicom configured 
> right yet).
> 
> this is 3.15-rc4 with the anti-memory corruption patch applied.
> 
> [   67.872274] BUG: unable to handle kernel NULL pointer dereference at 00000004
> [   67.876146] IP: [<ffffffff81013df2>] p4_pmu_schedule_events+0xa5/0x331

Pentium 4 's were not 64bit, were they?

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html