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* [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



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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

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