Re: [PATCH AUTOSEL 5.10 01/31] ARM: 9014/2: Replace string mem* functions for KASan

[Sasha Levin]

On Wed, Dec 30, 2020 at 03:18:13PM +0100, Ahmad Fatoum wrote:
> Hello Sasha,
>
> On 30.12.20 14:02, Sasha Levin wrote:
> > From: Linus Walleij <linus.walleij@xxxxxxxxxx>
> >
> > [ Upstream commit d6d51a96c7d63b7450860a3037f2d62388286a52 ]
> >
> > Functions like memset()/memmove()/memcpy() do a lot of memory
> > accesses.
> >
> > If a bad pointer is passed to one of these functions it is important
> > to catch this. Compiler instrumentation cannot do this since these
> > functions are written in assembly.
> >
> > KASan replaces these memory functions with instrumented variants.
>
> Unless someone actually wants this, I suggest dropping it.
>
> It's a prerequisite patch for KASan support on ARM32, which is new in
> v5.11-rc1. Backporting it on its own doesn't add any value IMO.

I'll drop it, thanks.

--
Thanks,
Sasha