This patch addresses the following Coverity report about the
zno * sdkp->zone_blocks expression:
CID 1475514 (#1 of 1): Unintentional integer overflow (OVERFLOW_BEFORE_WIDEN)
overflow_before_widen: Potentially overflowing expression zno *
sdkp->zone_blocks with type unsigned int (32 bits, unsigned) is evaluated
using 32-bit arithmetic, and then used in a context that expects an
expression of type sector_t (64 bits, unsigned).
Cc: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
Cc: Damien Le Moal <Damien.LeMoal@xxxxxxx>
Cc: Hannes Reinecke <hare@xxxxxxx>
Fixes: 5795eb443060 ("scsi: sd_zbc: emulate ZONE_APPEND commands")
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
---
drivers/scsi/sd_zbc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c
index b9757f24b0d6..ded4d7a070a0 100644
--- a/drivers/scsi/sd_zbc.c
+++ b/drivers/scsi/sd_zbc.c
@@ -280,7 +280,7 @@ static void sd_zbc_update_wp_offset_workfn(struct work_struct *work)
{
struct scsi_disk *sdkp;
unsigned long flags;
- unsigned int zno;
+ sector_t zno;
int ret;
sdkp = container_of(work, struct scsi_disk, zone_wp_offset_work);
