linux-kernel - Re: [PATCH -v1.1] Kbuild: Ignore GREP

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Date:	Mon, 11 Nov 2013 21:43:30 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Michal Marek <mmarek@...e.cz>
Cc:	Borislav Petkov <bp@...en8.de>, linux-kbuild@...r.kernel.org,
	lkml <linux-kernel@...r.kernel.org>, x86-ml <x86@...nel.org>
Subject: Re: [PATCH -v1.1] Kbuild: Ignore GREP_OPTIONS env variable


* Michal Marek <mmarek@...e.cz> wrote:

> On Mon, Nov 11, 2013 at 03:27:43PM +0100, Borislav Petkov wrote:
> > From: Borislav Petkov <bp@...e.de>
> > Subject: [PATCH] Kbuild: Ignore GREP_OPTIONS env variable
> > 
> > When building the kernel in a shell which defines GREP_OPTIONS so that
> > grep behavior is modified, we can break the generation of the syscalls
> > table like so:
> > 
> > __SYSCALL_COMMON(.[01;31m.[K0.[m.[K, sys_read, sys_read)
> > __SYSCALL_COMMON(.[01;31m.[K1.[m.[K, sys_write, sys_write)
> > __SYSCALL_COMMON(.[01;31m.[K1.[m.[K0, sys_mprotect, sys_mprotect) ...
> 
> The email had literal escape sequences and git am preserved them, so git
> show displayed red zeros and onces. [..]

Neat trick if it was intentionally!

> [...] That was quite scary, [...]

Scary if it was unintentional ;-)

Thanks,

	Ingo
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