linux-kernel - Re: Re: [PATCH v3 0/5] ARM64: Add kernel probes(Kprobes) support

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Message-ID: <5476BFB4.2020705@hitachi.com>
Date:	Thu, 27 Nov 2014 15:07:48 +0900
From:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
To:	Steve Capper <steve.capper@...aro.org>
Cc:	David Long <dave.long@...aro.org>,
	"Jon Medhurst (Tixy)" <tixy@...aro.org>,
	Russell King <linux@....linux.org.uk>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Sandeepa Prabhu <sandeepa.prabhu@...aro.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
	William Cohen <wcohen@...hat.com>,
	David Miller <davem@...emloft.net>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: Re: [PATCH v3 0/5] ARM64: Add kernel probes(Kprobes) support

(2014/11/27 3:59), Steve Capper wrote:
> The crash is extremely easy to reproduce.
> 
> I've not observed any missed events on a kprobe on an arm64 system
> that's still alive.
> My (limited!) understanding is that this suggests there could be a
> problem with how missed events from a recursive call to memcpy are
> being handled.

I think so too. BTW, could you bisect that? :)

Thank you,


-- 
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Research Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@...achi.com


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