diff options
| author | Murthy Bhat <Murthy.Bhat@microchip.com> | 2021-03-11 14:15:03 -0600 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-04-05 23:02:28 -0400 |
| commit | b622a601a13ae5974c5b0aeecb990c224b8db0d9 (patch) | |
| tree | 682abfe035a47af41621b87bc3550aa2200c45e8 /drivers/scsi/smartpqi | |
| parent | c6d3ee209b9e863c6251f72101511340451ca324 (diff) | |
scsi: smartpqi: Correct request leakage during reset operations
While failing queued I/Os in TMF path, there was a request leak and hence
stale entries in request pool with ref count being non-zero. In shutdown
path we have a BUG_ON to catch stuck I/O either in firmware or in the
driver. The stale requests caused a system crash. The I/O request pool
leakage also lead to a significant performance drop.
Link: https://lore.kernel.org/r/161549370379.25025.12793264112620796062.stgit@brunhilda
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microchip.com>
Signed-off-by: Murthy Bhat <Murthy.Bhat@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/smartpqi')
| -rw-r--r-- | drivers/scsi/smartpqi/smartpqi_init.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 61e3a5afaf07..4533085c4de6 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -5489,6 +5489,8 @@ static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info, list_del(&io_request->request_list_entry); set_host_byte(scmd, DID_RESET); + pqi_free_io_request(io_request); + scsi_dma_unmap(scmd); pqi_scsi_done(scmd); } @@ -5525,6 +5527,8 @@ static void pqi_fail_io_queued_for_all_devices(struct pqi_ctrl_info *ctrl_info) list_del(&io_request->request_list_entry); set_host_byte(scmd, DID_RESET); + pqi_free_io_request(io_request); + scsi_dma_unmap(scmd); pqi_scsi_done(scmd); } |