Messages in this thread Patch in this message | | | Date | Wed, 22 Jun 2005 14:02:41 +0100 (BST) | From | Hugh Dickins <> | Subject | [PATCH] fix remap_pte_range BUG |
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Out-of-tree user of remap_pfn_range hit kernel BUG at mm/memory.c:1112! It passes an unrounded size to remap_pfn_range, which was okay before 2.6.12, but misses remap_pte_range's new end condition. An audit of all the other ptwalks confirms that this is the only one so exposed.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
--- 2.6.12/mm/memory.c 2005-06-17 20:48:29.000000000 +0100 +++ linux/mm/memory.c 2005-06-21 20:31:42.000000000 +0100 @@ -1164,7 +1164,7 @@ int remap_pfn_range(struct vm_area_struc { pgd_t *pgd; unsigned long next; - unsigned long end = addr + size; + unsigned long end = addr + PAGE_ALIGN(size); struct mm_struct *mm = vma->vm_mm; int err; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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