Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

# gpg: Signature made Thu 16 Jun 2016 15:01:27 BST
# gpg:                using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (39 commits)
  hbitmap: add 'pos < size' asserts
  iotests: Add test for oVirt-like storage migration
  iotests: Add test for post-mirror backing chains
  block/null: Implement bdrv_refresh_filename()
  block/mirror: Fix target backing BDS
  block: Allow replacement of a BDS by its overlay
  rbd:change error_setg() to error_setg_errno()
  iotests: 095: Clean up QEMU before showing image info
  block: Create the commit block job before reopening any image
  block: Prevent sleeping jobs from resuming if they have been paused
  block: use the block job list in qmp_query_block_jobs()
  block: use the block job list in bdrv_drain_all()
  block: Fix snapshot=on with aio=native
  block: Remove bs->zero_beyond_eof
  qcow2: Let vmstate call qcow2_co_preadv/pwrite directly
  block: Make bdrv_load/save_vmstate coroutine_fns
  block: Allow .bdrv_load/save_vmstate() to return 0/-errno
  block: Make .bdrv_load_vmstate() vectored
  block: Introduce bdrv_preadv()
  doc: Fix mailing list address in tests/qemu-iotests/README
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/util/hbitmap.c b/util/hbitmap.c
index 7121b11c01..99fd2ba37b 100644
--- a/util/hbitmap.c
+++ b/util/hbitmap.c
@@ -269,6 +269,7 @@ void hbitmap_set(HBitmap *hb, uint64_t start, uint64_t count)
     start >>= hb->granularity;
     last >>= hb->granularity;
     count = last - start + 1;
+    assert(last < hb->size);
 
     hb->count += count - hb_count_between(hb, start, last);
     hb_set_between(hb, HBITMAP_LEVELS - 1, start, last);
@@ -348,6 +349,7 @@ void hbitmap_reset(HBitmap *hb, uint64_t start, uint64_t count)
 
     start >>= hb->granularity;
     last >>= hb->granularity;
+    assert(last < hb->size);
 
     hb->count -= hb_count_between(hb, start, last);
     hb_reset_between(hb, HBITMAP_LEVELS - 1, start, last);
@@ -371,6 +373,7 @@ bool hbitmap_get(const HBitmap *hb, uint64_t item)
     /* Compute position and bit in the last layer.  */
     uint64_t pos = item >> hb->granularity;
     unsigned long bit = 1UL << (pos & (BITS_PER_LONG - 1));
+    assert(pos < hb->size);
 
     return (hb->levels[HBITMAP_LEVELS - 1][pos >> BITS_PER_LEVEL] & bit) != 0;
 }