Re: [PATCH] ARM: ubsan: select ARCH_HAS_UBSAN_SANITIZE_ALL

[Kees Cook]

On Wed, Sep 28, 2022 at 10:47:39AM -0700, Florian Fainelli wrote:
> From: Seung-Woo Kim <sw0312.kim@xxxxxxxxxxx>
> 
> To enable UBSAN on ARM, this patch enables ARCH_HAS_UBSAN_SANITIZE_ALL
> from arm confiuration. Basic kernel bootup test is passed on arm with
> CONFIG_UBSAN_SANITIZE_ALL enabled.
> 
> Signed-off-by: Seung-Woo Kim <sw0312.kim@xxxxxxxxxxx>
> [florian: rebased against v6.0-rc7]
> Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>

Ah-ha, thanks for testing this. What devices did you check this on? I
know boot-up on arm32 can be very device-specific.

Which UBSAN configs did you try?

Thanks!

-Kees

-- 
Kees Cook