Messages in this thread | | | Subject | Re: [smartpqi updates PATCH V2 06/11] smartpqi: avoid failing ios for offline devices | From | john.p.donnelly@oracle ... | Date | Thu, 30 Sep 2021 13:23:27 -0500 |
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On 9/28/21 6:54 PM, Don Brace wrote: > From: Mahesh Rajashekhara <mahesh.rajashekhara@microchip.com> > > Prevent kernel crash by failing outstanding I/O request > when the OS takes device offline. > > When posted IOs to the controller's inbound queue are > not picked by the controller, the driver will halt the > controller and take the controller offline. > > When the driver takes the controller offline, > the driver will fail all the outstanding requests which > can sometime lead to an OS crash. > > Reviewed-by: Scott Benesh <scott.benesh@microchip.com> > Reviewed-by: Scott Teel <scott.teel@microchip.com> > Signed-off-by: Mahesh Rajashekhara <mahesh.rajashekhara@microchip.com> > Signed-off-by: Don Brace <don.brace@microchip.com>
Acked-by: John Donnelly <john.p.donnelly@oracle.com>
> --- > drivers/scsi/smartpqi/smartpqi_init.c | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) > > diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c > index 838274d8fadf..c9f2a3d54663 100644 > --- a/drivers/scsi/smartpqi/smartpqi_init.c > +++ b/drivers/scsi/smartpqi/smartpqi_init.c > @@ -8544,6 +8544,7 @@ static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info) > unsigned int i; > struct pqi_io_request *io_request; > struct scsi_cmnd *scmd; > + struct scsi_device *sdev; > > for (i = 0; i < ctrl_info->max_io_slots; i++) { > io_request = &ctrl_info->io_request_pool[i]; > @@ -8552,7 +8553,13 @@ static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info) > > scmd = io_request->scmd; > if (scmd) { > - set_host_byte(scmd, DID_NO_CONNECT); > + sdev = scmd->device; > + if (!sdev || !scsi_device_online(sdev)) { > + pqi_free_io_request(io_request); > + continue; > + } else { > + set_host_byte(scmd, DID_NO_CONNECT); > + } > } else { > io_request->status = -ENXIO; > io_request->error_info = >
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