[PATCH] nvme: fix a potential invalid pointer dereference

[Maurizio Lombardi]

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 at redhat.com>
---
 drivers/nvme/host/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 505e16f20e57..aba432c58fed 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -4983,6 +4983,7 @@ 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);
-- 
2.31.1