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| author | Hugh Dickins <hugh@veritas.com> | 2005-06-25 14:54:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-25 16:24:26 -0700 |
| commit | 2d15cab85b85a56cc886037cab43cc292923ff22 (patch) | |
| tree | 55de7526dfb766067821d552892ad43b32f78c35 /mm/memory.c | |
| parent | 1e8a81c5a37907bc082025d3468718116dca1eeb (diff) | |
| download | lwn-2d15cab85b85a56cc886037cab43cc292923ff22.tar.gz lwn-2d15cab85b85a56cc886037cab43cc292923ff22.zip | |
[PATCH] mm: fix remap_pte_range BUG
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>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memory.c b/mm/memory.c index c256175742ac..beabdefa6254 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1139,7 +1139,7 @@ int remap_pfn_range(struct vm_area_struct *vma, unsigned long addr, { 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; |