commit 48f78be3326052a7718678ff9a78d6d884a50323
author Keith Busch <keith.busch@intel.com> Fri Oct 05 08:57:06 2018 -0600
committer Christoph Hellwig <hch@lst.de> Mon Oct 08 11:53:42 2018 +0200
tree b5458acfc76ba2bfebdec235efc6fc231192c252
parent 133424a207774d3d32a38d560c6469ed31c0472f

nvme: remove ns sibling before clearing path

The code had been clearing a namespace being deleted as the current
path while that namespace was still in the path siblings list. It is
possible a new IO could set that namespace back to the current path
since it appeared to be an eligable path to select, which may result in
a use-after-free error.

This patch ensures a namespace being removed is not eligable to be reset
as a current path prior to clearing it as the current path.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>