Merge tag 'block-6.19-20260130' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

Pull block fixes from Jens Axboe:

 - Fix for an accounting leak in bcache that's been there forever,
   and a related dead code removal

 - Revert of a fix for rnbd that went into this series, but depends
   on other changes that are staged for 7.0

 - NVMe pull request via Keith:
      - TCP target completion race condition fix (Ming)
      - DMA descriptor cleanup fix (Roger)

* tag 'block-6.19-20260130' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  bcache: fix I/O accounting leak in detached_dev_do_request
  bcache: remove dead code in detached_dev_do_request
  nvme-pci: DMA unmap the correct regions in nvme_free_sgls
  Revert "rnbd-clt: fix refcount underflow in device unmap path"
  nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference

Author: torvalds

drivers/block/rnbd/rnbd-clt.c

@@ -1662,6 +1662,7 @@ static void destroy_sysfs(struct rnbd_clt_dev *dev,
 			/* To avoid deadlock firstly remove itself */
 			sysfs_remove_file_self(&dev->kobj, sysfs_self);
 		kobject_del(&dev->kobj);
+		kobject_put(&dev->kobj);
 	}
 }
 

drivers/md/bcache/request.c

@@ -1107,17 +1107,13 @@ static void detached_dev_do_request(struct bcache_device *d,
 
 	if (bio_op(orig_bio) == REQ_OP_DISCARD &&
 	    !bdev_max_discard_sectors(dc->bdev)) {
+		bio_end_io_acct(orig_bio, start_time);
 		bio_endio(orig_bio);
 		return;
 	}
 
 	clone_bio = bio_alloc_clone(dc->bdev, orig_bio, GFP_NOIO,
 				    &d->bio_detached);
-	if (!clone_bio) {
-		orig_bio->bi_status = BLK_STS_RESOURCE;
-		bio_endio(orig_bio);
-		return;
-	}
 
 	ddip = container_of(clone_bio, struct detached_dev_io_private, bio);
 	/* Count on the bcache device */

drivers/nvme/host/pci.c

@@ -806,8 +806,8 @@ static void nvme_unmap_data(struct request *req)
 	if (!blk_rq_dma_unmap(req, dma_dev, &iod->dma_state, iod->total_len,
 			      map)) {
 		if (nvme_pci_cmd_use_sgl(&iod->cmd))
-			nvme_free_sgls(req, iod->descriptors[0],
-				       &iod->cmd.common.dptr.sgl, attrs);
+			nvme_free_sgls(req, &iod->cmd.common.dptr.sgl,
+			               iod->descriptors[0], attrs);
 		else
 			nvme_free_prps(req, attrs);
 	}

drivers/nvme/target/io-cmd-bdev.c

@@ -180,9 +180,10 @@ u16 blk_to_nvme_status(struct nvmet_req *req, blk_status_t blk_sts)
 static void nvmet_bio_done(struct bio *bio)
 {
 	struct nvmet_req *req = bio->bi_private;
+	blk_status_t blk_status = bio->bi_status;
 
-	nvmet_req_complete(req, blk_to_nvme_status(req, bio->bi_status));
 	nvmet_req_bio_put(req, bio);
+	nvmet_req_complete(req, blk_to_nvme_status(req, blk_status));
 }
 
 #ifdef CONFIG_BLK_DEV_INTEGRITY