4.10 and -stable fix for virtio_blk and virtually mapped stacks

From: Christoph Hellwig
Date: Wed Jan 04 2017 - 00:25:23 EST

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Without this fix attempts to do scsi passthrough on virtio_blk will crash
the system on virtually mapped stacks, which is something happening during
boot with many distros.

Next message: Christoph Hellwig: "[PATCH] virtio_blk: avoid DMA to stack for the sense buffer"
Previous message: Milo Kim: "[PATCH v4 0/3] ARM: dts: imx6: Support Poslab Savageboard dual & quad"
Next in thread: Christoph Hellwig: "[PATCH] virtio_blk: avoid DMA to stack for the sense buffer"
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