linux-kernel - Re: [PATCH] ARM/ARM64: don't enter kgdb when userspace executes a kgdb break instruction.

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Date:	Thu, 31 Jul 2014 20:07:46 -0700
From:	Omar Sandoval <osandov@...ndov.com>
To:	Will Deacon <will.deacon@....com>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	Catalin Marinas <Catalin.Marinas@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARM/ARM64: don't enter kgdb when userspace executes a
 kgdb break instruction.

Hi, Will,

On Thu, Jul 31, 2014 at 11:46:53AM +0100, Will Deacon wrote:
> I'll merge the arm64 diff I proposed. Could you repost the ARM part please?
I've just reposted it, hopefully we can get that merged in soon as well.

> I think enabling and activating kgdb by default is a pretty crazy thing to
> do, but I agree that we shouldn't allow userspace to trap into it either.
Agreed, hopefully the actual footprint of this bug isn't too large, but it's
worth fixing anyways.

> Once you repost the ARM patches, we can look at getting them merged via rmk.
> 
> Cheers,
> 
> Will

Thanks again!
Omar
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