scsi: lpfc: Fix crash in lpfc_nvme_fcp_io_submit during LIP
authorDick Kennedy <dick.kennedy@broadcom.com>
Sat, 30 Sep 2017 00:34:41 +0000 (17:34 -0700)
committerMartin K. Petersen <martin.petersen@oracle.com>
Tue, 3 Oct 2017 02:46:39 +0000 (22:46 -0400)
commitb7672ae681f8debe125ecc2ec59ba31d886acf5d
treea5fab4b75b718e025212df955f09a80bbb8eae89
parent42270dce9d78acbaa5b9ca4fd4e82d251a8d099b
scsi: lpfc: Fix crash in lpfc_nvme_fcp_io_submit during LIP

The driver is seeing a NULL pointer in lpfc_nvme_fcp_io_submit.  This
was ultimately due to a transport AER being sent on a terminated
controller, thus some of the values were not set. In case we're in a
system without a corrected transport and in case a race condition occurs
where we enter the routine as the teardown is happening in a separate
thread, validate the parameters before starting the io.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/scsi/lpfc/lpfc_nvme.c