This is a note to let you know that I've just added the patch titled

scsi: sd_zbc: Fix sd_zbc_read_zoned_characteristics()

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: scsi-sd_zbc-fix-sd_zbc_read_zoned_characteristics.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 4a109032e3941413d8a029f619543fc5aec1d26d Mon Sep 17 00:00:00 2001

From: Damien Le Moal damien.lemoal@wdc.com Date: Wed, 11 Oct 2017 05:54:25 +0900 Subject: scsi: sd_zbc: Fix sd_zbc_read_zoned_characteristics()

From: Damien Le Moal damien.lemoal@wdc.com

commit 4a109032e3941413d8a029f619543fc5aec1d26d upstream.

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") Signed-off-by: Damien Le Moal damien.lemoal@wdc.com Reviewed-by: Bart Van Assche Bart.VanAssche@wdc.com Reviewed-by: Johannes Thumshirn jthumshirn@suse.de Reviewed-by: Christoph Hellwig hch@lst.de Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/scsi/sd_zbc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/scsi/sd_zbc.c +++ b/drivers/scsi/sd_zbc.c @@ -375,15 +375,15 @@ static int sd_zbc_read_zoned_characteris 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;

Patches currently in stable-queue which might be from damien.lemoal@wdc.com are

queue-4.14/dm-zoned-ignore-last-smaller-runt-zone.patch queue-4.14/scsi-sd_zbc-fix-sd_zbc_read_zoned_characteristics.patch