linux-kernel - Re: [PATCH v4 2/2] powerpc: Uprobes port to powerpc

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Date:	Fri, 24 Aug 2012 17:07:31 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Michael Ellerman <michael@...erman.id.au>
Cc:	ananth@...ibm.com, ppcdev <linuxppc-dev@...ts.ozlabs.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Anton Blanchard <anton@...ba.org>, peterz@...radead.org,
	oleg@...hat.com, Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH v4 2/2] powerpc: Uprobes port to powerpc

On Fri, 2012-08-24 at 11:13 +1000, Michael Ellerman wrote:
> 
> Yeah. A NULL regs here is a kernel bug, so I think it's actually
> preferable to crash than silently return. 

Or best, if you think there's a remote chance that the bug might hit:

	if (WARN(!regs))
		return

Cheers,
Ben.


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