nvme: clear the request_queue pointers on failure in nvme_alloc_io_tag_set

[ Upstream commit 936c2dec98e98b1ec74ad8b0daf217b7412a87d4 ]

In nvme_alloc_io_tag_set(), the connect_q pointer should be set to NULL
in case of error to avoid potential invalid pointer dereferences.

Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index e189ce17deb3ef1bc5fbe2fd14d4e2716822f42a..5acc9ae225df3ccd25496f954545cdd666067db9 100644 (file)
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -4933,6 +4933,7 @@ int nvme_alloc_io_tag_set(struct nvme_ctrl *ctrl, struct blk_mq_tag_set *set,
 
 out_free_tag_set:
        blk_mq_free_tag_set(set);
+       ctrl->connect_q = NULL;
        return ret;
 }
 EXPORT_SYMBOL_GPL(nvme_alloc_io_tag_set);