On Mon, Dec 06, 2021 at 10:44:09PM +0100, andrey.konovalov@linux.dev wrote:

From: Andrey Konovalov <redacted>

Generic KASAN already selects KASAN_VMALLOC to allow VMAP_STACK to be
selected unconditionally, see commit acc3042d62cb9 ("arm64: Kconfig:
select KASAN_VMALLOC if KANSAN_GENERIC is enabled").

The same change is needed for SW_TAGS KASAN.

HW_TAGS KASAN does not require enabling KASAN_VMALLOC for VMAP_STACK,
they already work together as is. Still, selecting KASAN_VMALLOC still
makes sense to make vmalloc() always protected. In case any bugs in
KASAN's vmalloc() support are discovered, the command line kasan.vmalloc
flag can be used to disable vmalloc() checking.

This patch selects KASAN_VMALLOC for all KASAN modes for arm64.

Signed-off-by: Andrey Konovalov <redacted>

Acked-by: Catalin Marinas <catalin.marinas@arm.com>

I also had a look at the rest of the patches and they look fine to me
(even the init_tags comment, feel free to ignore it). I'll poke Vincenzo
next week to look at the patches with his co-developed-by tag.

-- 
Catalin

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