From: Lecopzer Chen <lecopzer@xxxxxxxxx> Subject: kasan: fix incorrect arguments passing in kasan_add_zero_shadow kasan_remove_zero_shadow() shall use original virtual address, start and size, instead of shadow address. Link: https://lkml.kernel.org/r/20210103063847.5963-1-lecopzer@xxxxxxxxx Fixes: 0207df4fa1a86 ("kernel/memremap, kasan: make ZONE_DEVICE with work with KASAN") Signed-off-by: Lecopzer Chen <lecopzer.chen@xxxxxxxxxxxx> Reviewed-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx> Cc: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx> Cc: Dan Williams <dan.j.williams@xxxxxxxxx> Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Cc: Alexander Potapenko <glider@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/kasan/init.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/mm/kasan/init.c~kasan-fix-incorrect-arguments-passing-in-kasan_add_zero_shadow +++ a/mm/kasan/init.c @@ -486,7 +486,6 @@ int kasan_add_zero_shadow(void *start, u ret = kasan_populate_early_shadow(shadow_start, shadow_end); if (ret) - kasan_remove_zero_shadow(shadow_start, - size >> KASAN_SHADOW_SCALE_SHIFT); + kasan_remove_zero_shadow(start, size); return ret; } _
