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authorIsrael Rukshin <israelr@mellanox.com>2018-06-10 10:31:10 +0000
committerChristoph Hellwig <hch@lst.de>2018-06-11 16:17:41 +0200
commit16001c10725e11b73b8518f42e414506bf73c291 (patch)
treef24a46cc72411e71324c7f83951e0dfb93d57a99 /drivers/nvme
parent190b02ed79e08983bf62d47c05945c1b06a3d7d5 (diff)
nvme: fix NULL pointer dereference in nvme_init_subsystem
When using nvme-pci driver the nvmf_ctrl_options is NULL. There is no need to check for discovery_nqn flag at non-fabrics controller. Fixes: 181303d0 ("nvme-fabrics: allow duplicate connections to the discovery controller") Signed-off-by: Israel Rukshin <israelr@mellanox.com> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme')
-rw-r--r--drivers/nvme/host/core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index e2dcd14012b1..d6ca4598c027 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2208,7 +2208,7 @@ static int nvme_init_subsystem(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id)
* Verify that the subsystem actually supports multiple
* controllers, else bail out.
*/
- if (!ctrl->opts->discovery_nqn &&
+ if (!(ctrl->opts && ctrl->opts->discovery_nqn) &&
nvme_active_ctrls(found) && !(id->cmic & (1 << 1))) {
dev_err(ctrl->device,
"ignoring ctrl due to duplicate subnqn (%s).\n",