* [RESEND PATCH] kasan: fix incorrect arguments passing in kasan_add_zero_shadow
@ 2021-01-13 9:03 Lecopzer Chen
0 siblings, 0 replies; only message in thread
From: Lecopzer Chen @ 2021-01-13 9:03 UTC (permalink / raw)
To: linux-kernel, linux-mm, kasan-dev
Cc: Lecopzer Chen, dan.j.williams, aryabinin, glider, dvyukov, akpm,
linux-mediatek, yj.chiang, Lecopzer Chen, Andrey Konovalov
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>
Reviewed-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Alexander Potapenko <glider@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
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
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