The three values starting at byte 8 of the Zoned Block Device Characteristics VPD page B6h are 32 bits values, not 64bits. So use get_unaligned_be32() to retrieve the values and not get_unaligned_be64() Fixes: 89d947561077 ("sd: Implement support for ZBC devices") Cc: <stable@xxxxxxxxxxxxxxx> Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx> --- drivers/scsi/sd_zbc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c index 810377007665..0e6b5f5d14e7 100644 --- a/drivers/scsi/sd_zbc.c +++ b/drivers/scsi/sd_zbc.c @@ -356,15 +356,15 @@ static int sd_zbc_read_zoned_characteristics(struct scsi_disk *sdkp, if (sdkp->device->type != TYPE_ZBC) { /* Host-aware */ sdkp->urswrz = 1; - sdkp->zones_optimal_open = get_unaligned_be64(&buf[8]); - sdkp->zones_optimal_nonseq = get_unaligned_be64(&buf[12]); + sdkp->zones_optimal_open = get_unaligned_be32(&buf[8]); + sdkp->zones_optimal_nonseq = get_unaligned_be32(&buf[12]); sdkp->zones_max_open = 0; } else { /* Host-managed */ sdkp->urswrz = buf[4] & 1; sdkp->zones_optimal_open = 0; sdkp->zones_optimal_nonseq = 0; - sdkp->zones_max_open = get_unaligned_be64(&buf[16]); + sdkp->zones_max_open = get_unaligned_be32(&buf[16]); } return 0; -- 2.13.5