Upstream commit: Fixes: d10325e5a9ca ("nvme-tcp: fix possible null deref
on a timed out io queue connect"
If I/O queue connect times out, we might have freed the queue socket
already, so check for that on the error path in nvme_tcp_start_queue.
Signed-off-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/nvme/host/tcp.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index 2405bb9c63cc..2b107a1d152b 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -1423,7 +1423,8 @@ static int nvme_tcp_start_queue(struct nvme_ctrl *nctrl, int idx)
if (!ret) {
set_bit(NVME_TCP_Q_LIVE, &ctrl->queues[idx].flags);
} else {
- __nvme_tcp_stop_queue(&ctrl->queues[idx]);
+ if (test_bit(NVME_TCP_Q_ALLOCATED, &ctrl->queues[idx].flags))
+ __nvme_tcp_stop_queue(&ctrl->queues[idx]);
dev_err(nctrl->device,
"failed to connect queue: %d ret=%d\n", idx, ret);
}
--
2.17.1
