* [PATCH] kasan: fix incorrect arguments passing in kasan_add_zero_shadow
@ 2021-01-03 6:38 Lecopzer Chen
2021-01-08 18:25 ` Andrey Konovalov
0 siblings, 1 reply; 2+ messages in thread
From: Lecopzer Chen @ 2021-01-03 6:38 UTC (permalink / raw)
To: linux-kernel, linux-mm, kasan-dev
Cc: dan.j.williams, aryabinin, glider, dvyukov, akpm, linux-mediatek,
yj.chiang, Lecopzer Chen, Lecopzer Chen
kasan_remove_zero_shadow() shall use original virtual address, start
and size, instead of shadow address.
Fixes: 0207df4fa1a86 ("kernel/memremap, kasan: make ZONE_DEVICE with work with KASAN")
Signed-off-by: Lecopzer Chen <lecopzer.chen@mediatek.com>
---
mm/kasan/init.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/mm/kasan/init.c b/mm/kasan/init.c
index bc0ad208b3a7..67051cfae41c 100644
--- a/mm/kasan/init.c
+++ b/mm/kasan/init.c
@@ -481,7 +481,6 @@ int kasan_add_zero_shadow(void *start, unsigned long size)
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;
}
--
2.25.1
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] kasan: fix incorrect arguments passing in kasan_add_zero_shadow
2021-01-03 6:38 [PATCH] kasan: fix incorrect arguments passing in kasan_add_zero_shadow Lecopzer Chen
@ 2021-01-08 18:25 ` Andrey Konovalov
0 siblings, 0 replies; 2+ messages in thread
From: Andrey Konovalov @ 2021-01-08 18:25 UTC (permalink / raw)
To: Lecopzer Chen
Cc: LKML, Linux Memory Management List, kasan-dev, Dan Williams,
Andrey Ryabinin, Alexander Potapenko, Dmitry Vyukov,
Andrew Morton, linux-mediatek, yj.chiang, Lecopzer Chen
On Sun, Jan 3, 2021 at 7:39 AM Lecopzer Chen <lecopzer@gmail.com> wrote:
>
> kasan_remove_zero_shadow() shall use original virtual address, start
> and size, instead of shadow address.
>
> Fixes: 0207df4fa1a86 ("kernel/memremap, kasan: make ZONE_DEVICE with work with KASAN")
> Signed-off-by: Lecopzer Chen <lecopzer.chen@mediatek.com>
> ---
> mm/kasan/init.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/mm/kasan/init.c b/mm/kasan/init.c
> index bc0ad208b3a7..67051cfae41c 100644
> --- a/mm/kasan/init.c
> +++ b/mm/kasan/init.c
> @@ -481,7 +481,6 @@ int kasan_add_zero_shadow(void *start, unsigned long size)
>
> 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;
> }
> --
> 2.25.1
Reviewed-by: Andrey Konovalov <andreyknvl@google.com>
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2021-01-08 18:25 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-01-03 6:38 [PATCH] kasan: fix incorrect arguments passing in kasan_add_zero_shadow Lecopzer Chen
2021-01-08 18:25 ` Andrey Konovalov
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox