tree 33d5738c4869f8a10527f1c402b6cd180caae40b
parent e3e19dcc4c416d65f99f13d55be2b787f8d0050e
author Israel Rukshin <israelr@nvidia.com> 1633507784 +0000
committer Christoph Hellwig <hch@lst.de> 1634750160 +0200

nvmet-rdma: fix use-after-free when a port is removed

When removing a port, all its controllers are being removed, but there
are queues on the port that doesn't belong to any controller (during
connection time). This causes a use-after-free bug for any command
that dereferences req->port (like in nvmet_alloc_ctrl). Those queues
should be destroyed before freeing the port via configfs. Destroy the
remaining queues after the RDMA-CM was destroyed guarantees that no
new queue will be created.

Signed-off-by: Israel Rukshin <israelr@nvidia.com>
Reviewed-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>