Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block layer fixes from Jens Axboe:
 "A small collection of fixes that has been gathered over the last few
  weeks.  This contains:

   - A one-liner fix for NVMe, fixing a missing list_head init that
     could makes us oops on hitting recovery at load time.

   - Two small blk-mq fixes:
        - Fixup a bad goto jump on error handling.
        - Fix for oopsing if running out of reserved tags.

   - A memory leak fix for NBD.

   - Two small writeback fixes from Tejun, fixing a missing init to
     INITIAL_JIFFIES, and a possible underflow introduced recently.

   - A core merge fixup in sg gap detection, where rq->biotail was
     indexed with the count of rq->bio"

* 'for-linus' of git://git.kernel.dk/linux-block:
  writeback: fix possible underflow in write bandwidth calculation
  NVMe: Initialize device list head before starting
  Fix bug in blk_rq_merge_ok
  blkmq: Fix NULL pointer deref when all reserved tags in
  blk-mq: fix use of incorrect goto label in blk_mq_init_queue error path
  nbd: fix possible memory leak
  writeback: add missing INITIAL_JIFFIES init in global_update_bandwidth()

2 files changed, 5 insertions, 4 deletions

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 4bc2a5cb9935fb..a98c41f72c63f4 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -803,10 +803,6 @@ static int __init nbd_init(void)
 		return -EINVAL;
 	}
 
-	nbd_dev = kcalloc(nbds_max, sizeof(*nbd_dev), GFP_KERNEL);
-	if (!nbd_dev)
-		return -ENOMEM;
-
 	part_shift = 0;
 	if (max_part > 0) {
 		part_shift = fls(max_part);
@@ -828,6 +824,10 @@ static int __init nbd_init(void)
 	if (nbds_max > 1UL << (MINORBITS - part_shift))
 		return -EINVAL;
 
+	nbd_dev = kcalloc(nbds_max, sizeof(*nbd_dev), GFP_KERNEL);
+	if (!nbd_dev)
+		return -ENOMEM;
+
 	for (i = 0; i < nbds_max; i++) {
 		struct gendisk *disk = alloc_disk(1 << part_shift);
 		if (!disk)
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
index ceb32dd52a6ca5..e23be20a341752 100644
--- a/drivers/block/nvme-core.c
+++ b/drivers/block/nvme-core.c
@@ -3003,6 +3003,7 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	}
 	get_device(dev->device);
 
+	INIT_LIST_HEAD(&dev->node);
 	INIT_WORK(&dev->probe_work, nvme_async_probe);
 	schedule_work(&dev->probe_work);
 	return 0;