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

Pull block fixes from Jens Axboe:
 "Small collection of fixes that would be nice to have in -rc1. This
  contains:

   - NVMe pull request form Christoph, mostly with fixes for nvme-pci,
     host memory buffer in particular.

   - Error handling fixup for cgwb_create(), in case allocation of 'wb'
     fails. From Christophe Jaillet.

   - Ensure that trace_block_getrq() gets the 'dev' in an appropriate
     fashion, to avoid a potential NULL deref. From Greg Thelen.

   - Regression fix for dm-mq with blk-mq, fixing a problem with
     stacking IO schedulers. From me.

   - string.h fixup, fixing an issue with memcpy_and_pad(). This
     original change came in through an NVMe dependency, which is why
     I'm including it here. From Martin Wilck.

   - Fix potential int overflow in __blkdev_sectors_to_bio_pages(), from
     Mikulas.

   - MBR enable fix for sed-opal, from Scott"

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: directly insert blk-mq request from blk_insert_cloned_request()
  mm/backing-dev.c: fix an error handling path in 'cgwb_create()'
  string.h: un-fortify memcpy_and_pad
  nvme-pci: implement the HMB entry number and size limitations
  nvme-pci: propagate (some) errors from host memory buffer setup
  nvme-pci: use appropriate initial chunk size for HMB allocation
  nvme-pci: fix host memory buffer allocation fallback
  nvme: fix lightnvm check
  block: fix integer overflow in __blkdev_sectors_to_bio_pages()
  block: sed-opal: Set MBRDone on S3 resume path if TPER is MBREnabled
  block: tolerate tracing of NULL bio

3 files changed, 7 insertions, 17 deletions

diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 5144f9103723..87723c86f136 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -226,7 +226,9 @@ struct nvme_id_ctrl {
 	__le16			mntmt;
 	__le16			mxtmt;
 	__le32			sanicap;
-	__u8			rsvd332[180];
+	__le32			hmminds;
+	__le16			hmmaxd;
+	__u8			rsvd338[174];
 	__u8			sqes;
 	__u8			cqes;
 	__le16			maxcmd;
diff --git a/include/linux/string.h b/include/linux/string.h
index e1eeb0a8a969..54d21783e18d 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -434,20 +434,9 @@ __FORTIFY_INLINE char *strcpy(char *p, const char *q)
  * @count: The number of bytes to copy
  * @pad: Character to use for padding if space is left in destination.
  */
-__FORTIFY_INLINE void memcpy_and_pad(void *dest, size_t dest_len,
-				     const void *src, size_t count, int pad)
+static inline void memcpy_and_pad(void *dest, size_t dest_len,
+				  const void *src, size_t count, int pad)
 {
-	size_t dest_size = __builtin_object_size(dest, 0);
-	size_t src_size = __builtin_object_size(src, 0);
-
-	if (__builtin_constant_p(dest_len) && __builtin_constant_p(count)) {
-		if (dest_size < dest_len && dest_size < count)
-			__write_overflow();
-		else if (src_size < dest_len && src_size < count)
-			__read_overflow3();
-	}
-	if (dest_size < dest_len)
-		fortify_panic(__func__);
 	if (dest_len > count) {
 		memcpy(dest, src, count);
 		memset(dest + count, pad,  dest_len - count);
diff --git a/include/trace/events/block.h b/include/trace/events/block.h
index f815aaaef755..1fd7ff1a46f7 100644
--- a/include/trace/events/block.h
+++ b/include/trace/events/block.h
@@ -397,7 +397,6 @@ DECLARE_EVENT_CLASS(block_get_rq,
 
 	TP_fast_assign(
 		__entry->dev		= bio ? bio_dev(bio) : 0;
-		__entry->dev		= bio_dev(bio);
 		__entry->sector		= bio ? bio->bi_iter.bi_sector : 0;
 		__entry->nr_sector	= bio ? bio_sectors(bio) : 0;
 		blk_fill_rwbs(__entry->rwbs,
@@ -414,7 +413,7 @@ DECLARE_EVENT_CLASS(block_get_rq,
 /**
  * block_getrq - get a free request entry in queue for block IO operations
  * @q: queue for operations
- * @bio: pending block IO operation
+ * @bio: pending block IO operation (can be %NULL)
  * @rw: low bit indicates a read (%0) or a write (%1)
  *
  * A request struct for queue @q has been allocated to handle the
@@ -430,7 +429,7 @@ DEFINE_EVENT(block_get_rq, block_getrq,
 /**
  * block_sleeprq - waiting to get a free request entry in queue for block IO operation
  * @q: queue for operation
- * @bio: pending block IO operation
+ * @bio: pending block IO operation (can be %NULL)
  * @rw: low bit indicates a read (%0) or a write (%1)
  *
  * In the case where a request struct cannot be provided for queue @q