This is a note to let you know that I've just added the patch titled
scsi: sd_zbc: Support disks with more than 2**32 logical blocks
to the 5.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-sd_zbc-support-disks-with-more-than-2-32-logica.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2253faad6ab29a6bc2453dce6ec48d61ccd0aa4d
Author: Bart Van Assche <bvanassche@xxxxxxx>
Date: Fri Sep 17 14:23:14 2021 -0700
scsi: sd_zbc: Support disks with more than 2**32 logical blocks
[ Upstream commit 1d479e6c9cb2b40abfb455863a4e9335db882e33 ]
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).
Link: https://lore.kernel.org/r/20210917212314.2362324-1-bvanassche@xxxxxxx
Fixes: 5795eb443060 ("scsi: sd_zbc: emulate ZONE_APPEND commands")
Cc: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
Cc: Damien Le Moal <Damien.LeMoal@xxxxxxx>
Cc: Hannes Reinecke <hare@xxxxxxx>
Reviewed-by: Damien Le Moal <damien.lemoal@xxxxxxx>
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
Reviewed-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c
index ea8b3f6ee5cd..06ee1f045e97 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);
