linux-kernel - [PATCH] arm64: change to use memmove in efi-stub

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Date:	Fri, 16 Oct 2015 18:46:07 +0800
From:	yalin wang <yalin.wang2010@...il.com>
To:	catalin.marinas@....com, will.deacon@....com,
	ard.biesheuvel@...aro.org, matt.fleming@...el.com,
	yalin.wang2010@...il.com, mark.rutland@....com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] arm64: change to use memmove in efi-stub

Change to use memmove(), in case the dest address overlap with the
source address.

Signed-off-by: yalin wang <yalin.wang2010@...il.com>
---
 arch/arm64/kernel/efi-stub.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/efi-stub.c b/arch/arm64/kernel/efi-stub.c
index 816120e..b6dc44b 100644
--- a/arch/arm64/kernel/efi-stub.c
+++ b/arch/arm64/kernel/efi-stub.c
@@ -59,7 +59,7 @@ efi_status_t __init handle_kernel_image(efi_system_table_t *sys_table_arg,
 			}
 			*image_addr = *reserve_addr + TEXT_OFFSET;
 		}
-		memcpy((void *)*image_addr, old_image_addr, kernel_size);
+		memmove((void *)*image_addr, old_image_addr, kernel_size);
 		*reserve_size = kernel_memsize;
 	}
 
-- 
1.9.1

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