From: Lecopzer Chen <lecopzer.chen@mediatek.com>
To: <linux-kernel@vger.kernel.org>, <linux-mm@kvack.org>,
<kasan-dev@googlegroups.com>
Cc: Lecopzer Chen <lecopzer.chen@mediatek.com>,
<dan.j.williams@intel.com>, <aryabinin@virtuozzo.com>,
<glider@google.com>, <dvyukov@google.com>,
<akpm@linux-foundation.org>, <linux-mediatek@lists.infradead.org>,
<yj.chiang@mediatek.com>, Lecopzer Chen <lecopzer@gmail.com>,
Andrey Konovalov <andreyknvl@google.com>
Subject: [RESEND PATCH] kasan: fix incorrect arguments passing in kasan_add_zero_shadow
Date: Wed, 13 Jan 2021 17:03:40 +0800 [thread overview]
Message-ID: <20210113090340.23129-1-lecopzer.chen@mediatek.com> (raw)
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
reply other threads:[~2021-01-13 9:04 UTC|newest]
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