linux-kernel - Re: [PATCH 1/5] perf: Validate address in symbol__inc_addr

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Message-Id: <20120327.173026.1921458003009946618.davem@davemloft.net>
Date:	Tue, 27 Mar 2012 17:30:26 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	acme@...stprotocols.net
Cc:	mingo@...nel.org, eranian@...gle.com, dumitru.sorin87@...il.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/5] perf: Validate address in
 symbol__inc_addr_samples().

From: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Date: Tue, 27 Mar 2012 11:15:24 -0300

> Em Sun, Mar 25, 2012 at 04:28:08PM -0400, David Miller escreveu:
>> If addr < sym->start then we are going to access past the end of the
>> h->addr[] array, since the offset calculated will be huge.
>> 
>> Trigger an assertion instead of randomly scribbling memory when this
>> situation occurs.
> 
> I'm applying this one instead, please check if you have any concerns
> with this approach:

No objections.
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