linux-kernel - Re: [PATCH 0/4] Seccomp filter JIT support on ARM.

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Message-ID: <55422193.9010905@freebox.fr>
Date:	Thu, 30 Apr 2015 14:35:31 +0200
From:	Nicolas Schichan <nschichan@...ebox.fr>
To:	Daniel Borkmann <daniel@...earbox.net>
CC:	Will Drewry <wad@...omium.org>, Kees Cook <keescook@...omium.org>,
	linux-kernel@...r.kernel.org,
	Andy Lutomirski <luto@...capital.net>,
	Mircea Gherzan <mgherzan@...il.com>,
	Russell King <linux@....linux.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	linux-arm-kernel@...ts.infradead.org, ast@...mgrid.com
Subject: Re: [PATCH 0/4] Seccomp filter JIT support on ARM.

On 04/29/2015 06:37 PM, Daniel Borkmann wrote:
> On 04/29/2015 03:37 PM, Nicolas Schichan wrote:
> ...
>> The fourth and final patch fixes a bug in the emit_udiv() function
>> when used to convert a BPF_ALU | BPF_DIV | BPF_K instruction in the
>> ARM BPF JIT code.
> 
> Shouldn't that fix go separately, so it can be included into 4.1
> resp. -stable?

Sure, shall I resend that separately from the v2 of the serie or is it fine in
its current form ?

> Would be good if you also Cc Mircea, who wrote the code. Was that
> caught by lib/test_bpf.c suite (if not, would be good to add a test
> case for it) ?

It was detected by an internal test suite we have here. I see that there are
some BPF_ALU | BPF_DIV | BPF_K instructions so it might also be caught by
lib/test_bpf.c as well.

Regards,

-- 
Nicolas Schichan
Freebox SAS
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