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Date: Thu, 4 Apr 2019 10:45:03 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Mike Snitzer <snitzer@...hat.com>,
James Smart <jsmart2021@...il.com>,
Sagi Grimberg <sagi@...mberg.me>,
Hannes Reinecke <hare@...e.com>,
Christoph Hellwig <hch@....de>, Jens Axboe <axboe@...nel.dk>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.0 003/246] nvme-fc: fix numa_node when dev is null
5.0-stable review patch. If anyone has any objections, please let me know.
------------------
[ Upstream commit 06f3d71ea071b70e62bcc146cd9ff7ed1f9d4e43 ]
A recent change added a numa_node field to the nvme controller
and has the transport assign the node using dev_to_node().
However, fcloop registers with a NULL device struct, so the
dev_to_node() call oops.
Revise the assignment to assign no node when device struct is null.
Fixes: 103e515efa89b ("nvme: add a numa_node field to struct nvme_ctrl")
Reported-by: Mike Snitzer <snitzer@...hat.com>
Signed-off-by: James Smart <jsmart2021@...il.com>
Reviewed-by: Sagi Grimberg <sagi@...mberg.me>
Reviewed-by: Hannes Reinecke <hare@...e.com>
Reviewed-by: Mike Snitzer <snitzer@...hat.com>
[hch: small coding style fixup]
Signed-off-by: Christoph Hellwig <hch@....de>
Signed-off-by: Jens Axboe <axboe@...nel.dk>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/nvme/host/fc.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index 89accc76d71c..c37d5bbd72ab 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -3018,7 +3018,10 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
ctrl->ctrl.opts = opts;
ctrl->ctrl.nr_reconnects = 0;
- ctrl->ctrl.numa_node = dev_to_node(lport->dev);
+ if (lport->dev)
+ ctrl->ctrl.numa_node = dev_to_node(lport->dev);
+ else
+ ctrl->ctrl.numa_node = NUMA_NO_NODE;
INIT_LIST_HEAD(&ctrl->ctrl_list);
ctrl->lport = lport;
ctrl->rport = rport;
--
2.19.1
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