diff options
| author | Jianchao Wang <jianchao.w.wang@oracle.com> | 2018-05-24 09:27:38 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-03 07:50:29 +0200 |
| commit | 4bb1acf80c7fb05994955a26d7e40594ff6e9a9a (patch) | |
| tree | 825ea8d077ee4bd5aed8a544b80c74860626b149 /drivers/nvme | |
| parent | 2040b0d8c9c0aa2e50b733c0ecd12d8605d8a66d (diff) | |
nvme-rdma: stop admin queue before freeing it
[ Upstream commit 2e050f00a0f0e07467050cb4afae0234941e5bf3 ]
For any failure after nvme_rdma_start_queue in
nvme_rdma_configure_admin_queue, the admin queue will be freed with the
NVME_RDMA_Q_LIVE flag still set. Once nvme_rdma_stop_queue is invoked,
that will cause a use-after-free.
BUG: KASAN: use-after-free in rdma_disconnect+0x1f/0xe0 [rdma_cm]
To fix it, call nvme_rdma_stop_queue for all the failed cases after
nvme_rdma_start_queue.
Signed-off-by: Jianchao Wang <jianchao.w.wang@oracle.com>
Suggested-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/host/rdma.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index 93a082e0bdd4..48a831d58e7a 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -796,7 +796,7 @@ static int nvme_rdma_configure_admin_queue(struct nvme_rdma_ctrl *ctrl, if (error) { dev_err(ctrl->ctrl.device, "prop_get NVME_REG_CAP failed\n"); - goto out_cleanup_queue; + goto out_stop_queue; } ctrl->ctrl.sqsize = @@ -804,23 +804,25 @@ static int nvme_rdma_configure_admin_queue(struct nvme_rdma_ctrl *ctrl, error = nvme_enable_ctrl(&ctrl->ctrl, ctrl->ctrl.cap); if (error) - goto out_cleanup_queue; + goto out_stop_queue; ctrl->ctrl.max_hw_sectors = (ctrl->max_fr_pages - 1) << (ilog2(SZ_4K) - 9); error = nvme_init_identify(&ctrl->ctrl); if (error) - goto out_cleanup_queue; + goto out_stop_queue; error = nvme_rdma_alloc_qe(ctrl->queues[0].device->dev, &ctrl->async_event_sqe, sizeof(struct nvme_command), DMA_TO_DEVICE); if (error) - goto out_cleanup_queue; + goto out_stop_queue; return 0; +out_stop_queue: + nvme_rdma_stop_queue(&ctrl->queues[0]); out_cleanup_queue: if (new) blk_cleanup_queue(ctrl->ctrl.admin_q); |