Commit-ID: 73e8f3d7e2cb23614d5115703d76d8e54764b641 Gitweb: http://git.kernel.org/tip/73e8f3d7e2cb23614d5115703d76d8e54764b641 Author: T Makphaibulchoke <tmac@xxxxxx> AuthorDate: Tue, 28 Aug 2012 21:21:43 -0600 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Thu, 13 Sep 2012 17:35:54 +0200 x86/mm/init.c: Fix devmem_is_allowed() off by one Fixing an off-by-one error in devmem_is_allowed(), which allows accesses to physical addresses 0x100000-0x100fff, an extra page past 1MB. Signed-off-by: T Makphaibulchoke <tmac@xxxxxx> Acked-by: H. Peter Anvin <hpa@xxxxxxxxx> Cc: yinghai@xxxxxxxxxx Cc: tiwai@xxxxxxx Cc: dhowells@xxxxxxxxxx Link: http://lkml.kernel.org/r/1346210503-14276-1-git-send-email-tmac@xxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- arch/x86/mm/init.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index e0e6990..ab1f6a9 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -319,7 +319,7 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, */ int devmem_is_allowed(unsigned long pagenr) { - if (pagenr <= 256) + if (pagenr < 256) return 1; if (iomem_is_exclusive(pagenr << PAGE_SHIFT)) return 0; -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html