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c7cf72dcad
When 'start' and 'end' are less than a cacheline apart and 'start' is unaligned we are done after cleaning and invalidating the first cacheline. So check for (start < end) which will not walk off into invalid address ranges when (start > end). This issue was caught by drivers/dma/dmatest. 2.6.27 is susceptible. Cc: <stable@kernel.org> Cc: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Cc: Lothar WaÃ<9f>mann <LW@KARO-electronics.de> Cc: Lennert Buytenhek <buytenh@marvell.com> Cc: Eric Miao <eric.miao@marvell.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
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