This is a note to let you know that I've just added the patch titled
ARM: 8012/1: kdump: Avoid overflow when converting pfn to physaddr
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm-8012-1-kdump-avoid-overflow-when-converting-pfn-to-physaddr.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8fad87bca7ac9737e413ba5f1656f1114a8c314d Mon Sep 17 00:00:00 2001
From: Liu Hua <sdu.liu@xxxxxxxxxx>
Date: Thu, 27 Mar 2014 06:56:18 +0100
Subject: ARM: 8012/1: kdump: Avoid overflow when converting pfn to physaddr
From: Liu Hua <sdu.liu@xxxxxxxxxx>
commit 8fad87bca7ac9737e413ba5f1656f1114a8c314d upstream.
When we configure CONFIG_ARM_LPAE=y, pfn << PAGE_SHIFT will
overflow if pfn >= 0x100000 in copy_oldmem_page.
So use __pfn_to_phys for converting.
Signed-off-by: Liu Hua <sdu.liu@xxxxxxxxxx>
Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/kernel/crash_dump.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/kernel/crash_dump.c
+++ b/arch/arm/kernel/crash_dump.c
@@ -39,7 +39,7 @@ ssize_t copy_oldmem_page(unsigned long p
if (!csize)
return 0;
- vaddr = ioremap(pfn << PAGE_SHIFT, PAGE_SIZE);
+ vaddr = ioremap(__pfn_to_phys(pfn), PAGE_SIZE);
if (!vaddr)
return -ENOMEM;
Patches currently in stable-queue which might be from sdu.liu@xxxxxxxxxx are
queue-3.4/arm-8012-1-kdump-avoid-overflow-when-converting-pfn-to-physaddr.patch
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