4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Damien Le Moal <damien.lemoal@xxxxxxx>
commit b320a0a9f23c98f21631eb27bcbbca91c79b1c6e upstream.
The block (LBA) specified must not exceed the last addressable LBA,
which is dev->nr_sectors - 1. So fix the correct check is
"if (block >= dev->n_sectors)" and not "if (block > dev->n_sectords)".
Additionally, the asc/ascq to return for an LBA that is not a zone start
LBA should be ILLEGAL REQUEST, regardless if the bad LBA is out of
range.
Reported-by: David Butterfield <david.butterfield@xxxxxxx>
Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/ata/libata-scsi.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3772,8 +3772,13 @@ static unsigned int ata_scsi_zbc_out_xla
*/
goto invalid_param_len;
}
- if (block > dev->n_sectors)
- goto out_of_range;
+ if (block >= dev->n_sectors) {
+ /*
+ * Block must be a valid zone ID (a zone start LBA).
+ */
+ fp = 2;
+ goto invalid_fld;
+ }
all = cdb[14] & 0x1;
@@ -3804,10 +3809,6 @@ static unsigned int ata_scsi_zbc_out_xla
invalid_fld:
ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff);
return 1;
- out_of_range:
- /* "Logical Block Address out of range" */
- ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x00);
- return 1;
invalid_param_len:
/* "Parameter list length error" */
ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0);
