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rsxx: Adapter address space sanity check.
author
Philip J Kelleher
<pjk1939@linux.vnet.ibm.com>
Tue, 18 Jun 2013 19:48:38 +0000
(14:48 -0500)
committer
Jens Axboe
<axboe@kernel.dk>
Wed, 19 Jun 2013 11:52:10 +0000
(13:52 +0200)
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 <pjk1939@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drivers/block/rsxx/dev.c
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diff --git
a/drivers/block/rsxx/dev.c
b/drivers/block/rsxx/dev.c
index
a092f58
..
d7af441
100644
(file)
--- a/
drivers/block/rsxx/dev.c
+++ b/
drivers/block/rsxx/dev.c
@@
-174,6
+174,9
@@
static void rsxx_make_request(struct request_queue *q, struct bio *bio)
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;