diff options
| author | Don Brace <don.brace@microsemi.com> | 2016-02-24 00:16:34 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-02-24 05:27:02 +0300 |
| commit | c3390df4751177191b1691df2eba5e71af382d0b (patch) | |
| tree | bc2fc665fe4f5d6c000fb4678a9b5d649c67251a /drivers/scsi/hpsa.c | |
| parent | 39f3deb2bead8a3005130f641af11a78f14cdd28 (diff) | |
| download | linux-c3390df4751177191b1691df2eba5e71af382d0b.tar.xz | |
hpsa: check for a null phys_disk pointer in ioaccel2 path
An oops can occur when submitting ioaccel2 commands when the phys_disk
pointer is NULL in hpsa_scsi_ioaccel_raid_map. Happens when there are
configuration changes during I/O operations.
If the phys_disk pointer is NULL, send the command down the RAID path.
Reviewed-by: Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com>
Reviewed-by: Justin Lindley <justin.lindley@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com>
Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/hpsa.c')
| -rw-r--r-- | drivers/scsi/hpsa.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 589b44ea3107..edbecf84d79d 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -4981,6 +4981,8 @@ static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h, return IO_ACCEL_INELIGIBLE; c->phys_disk = dev->phys_disk[map_index]; + if (!c->phys_disk) + return IO_ACCEL_INELIGIBLE; disk_handle = dd[map_index].ioaccel_handle; disk_block = le64_to_cpu(map->disk_starting_blk) + |