[dm-devel] [PATCH 2/4] loop: fix crash if blk_alloc_queue fails

[Tejun Heo]

On Mon, Oct 14, 2013 at 12:12:24PM -0400, Mikulas Patocka wrote:
> loop: fix crash if blk_alloc_queue fails
> 
> If blk_alloc_queue fails, loop_add cleans up, but it doesn't clean up the
> identifier allocated with idr_alloc. That causes crash on module unload in
> idr_for_each(&loop_index_idr, &loop_exit_cb, NULL); where we attempt to
> remove non-existed device with that id.
...
> Signed-off-by: Mikulas Patocka <mpatocka at redhat.com>
> Cc: stable at kernel.org	# 3.1+

Acked-by: Tejun Heo <tj at kernel.org>

Thanks.

-- 
tejun