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Date: Fri, 3 Jul 2009 10:32:03 +0200 From: Joerg Roedel <joerg.roedel@....com> To: Ingo Molnar <mingo@...e.hu> CC: linux-kernel@...r.kernel.org, Joerg Roedel <joerg.roedel@....com>, stable@...nel.org Subject: [PATCH 1/2] dma-debug: fix off-by-one error in overlap function This patch fixes a bug in the overlap function which returned true if one region ends exactly before the second region begins. This is no overlap but the function returned true in that case. Cc: stable@...nel.org Reported-by: Andrew Randrianasulu <randrik@...l.ru> Signed-off-by: Joerg Roedel <joerg.roedel@....com> --- lib/dma-debug.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/lib/dma-debug.c b/lib/dma-debug.c index 3b93129..a9b6b5c 100644 --- a/lib/dma-debug.c +++ b/lib/dma-debug.c @@ -862,7 +862,7 @@ static inline bool overlap(void *addr, u64 size, void *start, void *end) return ((addr >= start && addr < end) || (addr2 >= start && addr2 < end) || - ((addr < start) && (addr2 >= end))); + ((addr < start) && (addr2 > end))); } static void check_for_illegal_area(struct device *dev, void *addr, u64 size) -- 1.6.3.3 -- 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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