I think this (commit 301db7c2) should be cherry-picked into stable-0.14. Ryan Harper <ry...@us.ibm.com> writes:
> If the block device has been closed, we no longer have a medium to submit > IO against, check for this before submitting io. This prevents a segfault > further in the code where we dereference elements of the block driver. > > Signed-off-by: Ryan Harper <ry...@us.ibm.com>
