[PATCH v4 17/19] ARM: LPAE: mark memory banks with start > ULONG_MAX as highmem
flat view
From: Russell King - ARM Linux <hidden>
Date: 2011-02-12 10:37:06
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lkml
On Mon, Jan 24, 2011 at 05:55:59PM +0000, Catalin Marinas wrote:
quoted hunk ↗ jump to hunk
@@ -782,7 +782,8 @@ static void __init sanity_check_meminfo(void) #ifdef CONFIG_HIGHMEM if (__va(bank->start) > vmalloc_min || - __va(bank->start) < (void *)PAGE_OFFSET) + __va(bank->start) < (void *)PAGE_OFFSET || + bank->start > ULONG_MAX)
I think this check should be first, so that we don't try to evaluate __va() on phys addresses > ULONG_MAX, possibly resulting in truncation.