On Mon, 04 Jan 2021 13:29:13 -0800 akpm@xxxxxxxxxxxxxxxxxxxx wrote: > > 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> > 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 > @@ -485,7 +485,6 @@ 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; > } Reviewer input on this one, please?
