ARM: 9202/1: kasan: support CONFIG_KASAN_VMALLOC

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Simply make shadow of vmalloc area mapped on demand.

Since the virtual address of vmalloc for Arm is also between
MODULE_VADDR and 0x100000000 (ZONE_HIGHMEM), which means the shadow
address has already included between KASAN_SHADOW_START and
KASAN_SHADOW_END.
Thus we need to change nothing for memory map of Arm.

This can fix ARM_MODULE_PLTS with KASan, support KASan for higmem
and support CONFIG_VMAP_STACK with KASan.

Signed-off-by: Lecopzer Chen <lecopzer.chen@mediatek.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>

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Lecopzer Chen 2022-04-27 15:29:01 +01:00 • committed by Russell King (Oracle)

parent ff6992735a

commit 565cbaad83

2 changed files with 6 additions and 1 deletions

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1

arch/arm/Kconfig

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6

arch/arm/mm/kasan_init.c

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