From: Philip J Kelleher <pjk1...@linux.vnet.ibm.com> Adding a sanity check to guarentee that DMAs outside of the device's address space will be errored out right away.
Signed-off-by: Philip J Kelleher <pjk1...@linux.vnet.ibm.com> ------------------------------------------------------------------------------- diff -uprN -X linux-block-vanilla/Documentation/dontdiff linux-block-vanilla/drivers/block/rsxx/dev.c linux-block/drivers/block/rsxx/dev.c --- linux-block-vanilla/drivers/block/rsxx/dev.c 2013-06-18 09:39:43.154903231 -0500 +++ linux-block/drivers/block/rsxx/dev.c 2013-06-18 09:44:02.210841168 -0500 @@ -174,6 +174,9 @@ static void rsxx_make_request(struct req if (!card) goto req_err; + if (bio->bi_sector + (bio->bi_size >> 9) > get_capacity(card->gendisk)) + goto req_err; + if (unlikely(card->halt)) { st = -EFAULT; goto req_err; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/