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| author | Don Brace <don.brace@microsemi.com> | 2020-07-20 16:52:51 -0500 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-07-24 22:09:53 -0400 |
| commit | 27e1b94dc9af605a9a611a75ab88f773e9dc6f88 (patch) | |
| tree | b324766ee7b2a4e27728e24e2d4686c6c5109b29 /drivers/scsi/hpsa.c | |
| parent | e6b9489acc7e679fe6107a98ab315b28977c0553 (diff) | |
| download | linux-27e1b94dc9af605a9a611a75ab88f773e9dc6f88.tar.gz linux-27e1b94dc9af605a9a611a75ab88f773e9dc6f88.tar.bz2 linux-27e1b94dc9af605a9a611a75ab88f773e9dc6f88.zip | |
scsi: hpsa: Correct rare oob condition
There are some rare conditions where a spare is first in the device list
causing an array out-of-bounds condition.
Link: https://lore.kernel.org/r/159528197176.24772.14659026352708896249.stgit@brunhilda
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.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 | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 81d0414e2117..9b1edc541ed0 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -3443,9 +3443,14 @@ static void hpsa_get_enclosure_info(struct ctlr_info *h, struct ErrorInfo *ei = NULL; struct bmic_sense_storage_box_params *bssbp = NULL; struct bmic_identify_physical_device *id_phys = NULL; - struct ext_report_lun_entry *rle = &rlep->LUN[rle_index]; + struct ext_report_lun_entry *rle; u16 bmic_device_index = 0; + if (rle_index < 0 || rle_index >= HPSA_MAX_PHYS_LUN) + return; + + rle = &rlep->LUN[rle_index]; + encl_dev->eli = hpsa_get_enclosure_logical_identifier(h, scsi3addr); @@ -4174,6 +4179,9 @@ static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h, int rc; struct ext_report_lun_entry *rle; + if (rle_index < 0 || rle_index >= HPSA_MAX_PHYS_LUN) + return; + rle = &rlep->LUN[rle_index]; dev->ioaccel_handle = rle->ioaccel_handle; @@ -4198,7 +4206,12 @@ static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device, struct ReportExtendedLUNdata *rlep, int rle_index, struct bmic_identify_physical_device *id_phys) { - struct ext_report_lun_entry *rle = &rlep->LUN[rle_index]; + struct ext_report_lun_entry *rle; + + if (rle_index < 0 || rle_index >= HPSA_MAX_PHYS_LUN) + return; + + rle = &rlep->LUN[rle_index]; if ((rle->device_flags & 0x08) && this_device->ioaccel_handle) this_device->hba_ioaccel_enabled = 1; @@ -4420,7 +4433,8 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h) /* * Skip over some devices such as a spare. */ - if (!tmpdevice->external && physical_device) { + if (phys_dev_index >= 0 && !tmpdevice->external && + physical_device) { skip_device = hpsa_skip_device(h, lunaddrbytes, &physdev_list->LUN[phys_dev_index]); if (skip_device) |