On Tue, 2019-05-21 at 17:49 -0700, James Smart wrote: > Crashes in scsi_queue_rq or in dma_unmap_direct_sg during BFS when > lpfc has lpfc_enable_bg=1. > > lpfc is setting the t10-dif and prot sg after scsi_add_host_with_dma() > has been called. The scsi_host_set_prot() and scsi_host_set_guard() > routines need to be called before scsi_add_host_with_dma(). > > Revise the calling sequence to set the protection/guard data before > calling scsi_add_host_with_dma(). > > Signed-off-by: Dick Kennedy <dick.kennedy@xxxxxxxxxxxx> > Signed-off-by: James Smart <jsmart2021@xxxxxxxxx> > --- > drivers/scsi/lpfc/lpfc_init.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c > index 416f0fb155f5..a2b827dd36ff 100644 > --- a/drivers/scsi/lpfc/lpfc_init.c > +++ b/drivers/scsi/lpfc/lpfc_init.c > @@ -94,6 +94,7 @@ static void lpfc_sli4_disable_intr(struct lpfc_hba *); > static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *, uint32_t); > static void lpfc_sli4_oas_verify(struct lpfc_hba *phba); > static uint16_t lpfc_find_cpu_handle(struct lpfc_hba *, uint16_t, int); > +static void lpfc_setup_bg(struct lpfc_hba *, struct Scsi_Host *); > > static struct scsi_transport_template *lpfc_transport_template = NULL; > static struct scsi_transport_template *lpfc_vport_transport_template = NULL; > @@ -4348,6 +4349,9 @@ lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev) > > timer_setup(&vport->delayed_disc_tmo, lpfc_delayed_disc_tmo, 0); > > + if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) > + lpfc_setup_bg(phba, shost); > + > error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev); > if (error) > goto out_put_shost; > @@ -7669,8 +7673,6 @@ lpfc_post_init_setup(struct lpfc_hba *phba) > */ > shost = pci_get_drvdata(phba->pcidev); > shost->can_queue = phba->cfg_hba_queue_depth - 10; > - if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) > - lpfc_setup_bg(phba, shost); > > lpfc_host_attrib_init(shost); > Reviewed-by: Ewan D. Milne <emilne@xxxxxxxxxx>
