linux-kernel - Re: the Linux kernel, testsuites, and maybe *you*

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Date:	Tue, 4 Sep 2007 11:05:33 -0400
From:	"Mike Frysinger" <vapier.adi@...il.com>
To:	"Andi Kleen" <andi@...stfloor.org>
Cc:	"Linux Kernel" <linux-kernel@...r.kernel.org>
Subject: Re: the Linux kernel, testsuites, and maybe *you*

On 9/2/07, Andi Kleen <andi@...stfloor.org> wrote:
> On Sun, Sep 02, 2007 at 11:15:23AM -0400, Mike Frysinger wrote:
> > there is still the ABI issue ... code written in kernel space in pure
> > asm cannot always be compiled in userspace and work properly/the same
>
> Is that a blackfin weirdness?

yes, Blackfin is weird in this respect due to being a no-mmu and
wanting ELF, but i was being sufficiently general to bolster my claims
and to leave the door open for any other port out there i'm not
familiar with and any port that comes along

> > > The other issue to test some of them properly you need unmapped pages
> > > etc. That gets much easier to do in user space. There are some other
> > > issues.
> >
> > you mean testing boundary overflows ?  can be handled with canaries
> > rather than segfaults i imagine ...
>
> Not for reads, no.

true, but generally the string functions arent searching for crashes
in the boundary conditions ... they just happen to sometimes find them
:)
-mike
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