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>
Bug: 275526617
(cherry picked from commit 565cbaad83d83e288927b96565211109bc984007)
Signed-off-by: Lecopzer Chen <lecopzer.chen@mediatek.com>
Change-Id: Ic2cb62e294dad96ba5a98b2ca48fa5efea2c2e57