blk-mq: add bounds check on tag-to-rq conversion

We need to check for a valid index before accessing the array
element to avoid accessing invalid memory regions.

Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Jeff Moyer <[email protected]>

Modified by Jens to drop the unlikely(), and make the fall through
path be having a valid tag.

Signed-off-by: Jens Axboe <[email protected]>

0 files changed, 0 insertions, 0 deletions