linux-kernel - Re: [PATCH arm64-next] net: bpf: arm64: address randomize and write protect JIT code

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Message-ID: <54132FC9.5040201@redhat.com>
Date:	Fri, 12 Sep 2014 19:39:21 +0200
From:	Daniel Borkmann <dborkman@...hat.com>
To:	Catalin Marinas <catalin.marinas@....com>
CC:	Will Deacon <Will.Deacon@....com>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"zlim.lnx@...il.com" <zlim.lnx@...il.com>,
	"ast@...mgrid.com" <ast@...mgrid.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH arm64-next] net: bpf: arm64: address randomize and write
 protect JIT code

On 09/12/2014 07:21 PM, Catalin Marinas wrote:
...
> We don't have a brk instruction for arm32 but we have guaranteed
> undefined space. Have a look at the kgdb support for example (or grep
> for register_undef_hook under arch/arm) to get an idea.

Will do, thanks!

>> Last but not least ;), if I would resend it today, would you queue
>> it for later on, or do you want to handle it differently?
>
> You can send it now, it will be pushed upstream at the right time.

Just did, thanks a lot for your help!
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