Jianchao Wang 2b1b7e784a nvme-pci: fix NULL pointer reference in nvme_alloc_ns ... When the io queues setup or tagset allocation failed, ctrl.tagset is NULL. But the scan work will still be queued and executed, then panic comes up due to NULL pointer reference of ctrl.tagset. To fix this, add a new ctrl state NVME_CTRL_ADMIN_ONLY to inidcate only admin queue is live. When non io queues or tagset allocation failed, ctrl enters into this state, scan work will not be started. But async event work and nvme dev ioctl will be still available. This will be helpful to do further investigation and recovery. Suggested-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jianchao Wang <jianchao.w.wang@oracle.com> Signed-off-by: Christoph Hellwig <hch@lst.de>		2018-01-08 11:02:13 +01:00
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core.c	nvme-pci: fix NULL pointer reference in nvme_alloc_ns	2018-01-08 11:02:13 +01:00
fabrics.c	nvme-fabrics: protect against module unload during create_ctrl	2018-01-08 11:01:56 +01:00
fabrics.h	nvme-fabrics: protect against module unload during create_ctrl	2018-01-08 11:01:56 +01:00
fc.c	nvme-fabrics: protect against module unload during create_ctrl	2018-01-08 11:01:56 +01:00
Kconfig	nvme: implement multipath access to nvme subsystems	2017-11-10 19:53:25 -07:00
lightnvm.c	lightnvm: make geometry structures 2.0 ready	2018-01-05 08:50:12 -07:00
Makefile	Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block	2017-11-14 15:32:19 -08:00
multipath.c	nvme: fix spelling mistake: "requeing" -> "requeuing"	2017-11-20 08:38:10 +01:00
nvme.h	nvme-pci: fix NULL pointer reference in nvme_alloc_ns	2018-01-08 11:02:13 +01:00
pci.c	nvme-pci: fix NULL pointer reference in nvme_alloc_ns	2018-01-08 11:02:13 +01:00
rdma.c	nvme-fabrics: protect against module unload during create_ctrl	2018-01-08 11:01:56 +01:00