4 files changed, 14 insertions, 3 deletions

diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index b8d325ce8754..120fc520f27a 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -1459,7 +1459,13 @@ static int iscsi_xmit_task(struct iscsi_conn *conn)
         if (test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx))
                 return -ENODATA;
 
+        spin_lock_bh(&conn->session->back_lock);
+        if (conn->task == NULL) {
+                spin_unlock_bh(&conn->session->back_lock);
+                return -ENODATA;
+        }
         __iscsi_get_task(task);
+        spin_unlock_bh(&conn->session->back_lock);
         spin_unlock_bh(&conn->session->frwd_lock);
         rc = conn->session->tt->xmit_task(task);
         spin_lock_bh(&conn->session->frwd_lock);
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 17eb4185f29d..f21c93bbb35c 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -828,6 +828,7 @@ static struct domain_device *sas_ex_discover_end_dev(
                 rphy = sas_end_device_alloc(phy->port);
                 if (!rphy)
                         goto out_free;
+                rphy->identify.phy_identifier = phy_id;
 
                 child->rphy = rphy;
                 get_device(&rphy->dev);
@@ -854,6 +855,7 @@ static struct domain_device *sas_ex_discover_end_dev(
 
                 child->rphy = rphy;
                 get_device(&rphy->dev);
+                rphy->identify.phy_identifier = phy_id;
                 sas_fill_in_rphy(child, rphy);
 
                 list_add_tail(&child->disco_list_node, &parent->port->disco_list);
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 6d65ac584eba..f8d51c3d5582 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -655,6 +655,7 @@ static blk_status_t scsi_result_to_blk_status(struct scsi_cmnd *cmd, int result)
                 set_host_byte(cmd, DID_OK);
                 return BLK_STS_TARGET;
         case DID_NEXUS_FAILURE:
+                set_host_byte(cmd, DID_OK);
                 return BLK_STS_NEXUS;
         case DID_ALLOC_FAILURE:
                 set_host_byte(cmd, DID_OK);
diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c
index fff86940388b..a340af797a85 100644
--- a/drivers/scsi/sd_zbc.c
+++ b/drivers/scsi/sd_zbc.c
@@ -142,10 +142,12 @@ int sd_zbc_report_zones(struct gendisk *disk, sector_t sector,
                 return -EOPNOTSUPP;
 
         /*
-         * Get a reply buffer for the number of requested zones plus a header.
-         * For ATA, buffers must be aligned to 512B.
+         * Get a reply buffer for the number of requested zones plus a header,
+         * without exceeding the device maximum command size. For ATA disks,
+         * buffers must be aligned to 512B.
          */
-        buflen = roundup((nrz + 1) * 64, 512);
+        buflen = min(queue_max_hw_sectors(disk->queue) << 9,
+                     roundup((nrz + 1) * 64, 512));
         buf = kmalloc(buflen, gfp_mask);
         if (!buf)
                 return -ENOMEM;