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Date: Wed, 4 Jun 2014 21:17:01 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Liu Hua <sdu.liu@...wei.com>, Russell King <rmk+kernel@....linux.org.uk> Subject: [PATCH 3.4 058/214] ARM: 8012/1: kdump: Avoid overflow when converting pfn to physaddr 3.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Liu Hua <sdu.liu@...wei.com> 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@...wei.com> Signed-off-by: Russell King <rmk+kernel@....linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- 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; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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