[0/3] qcow2: Fix image corruption bug in 4.1

Message

Kevin Wolf Oct. 23, 2019, 3:26 p.m. UTC

This series fixes an image corruption bug that was introduced in commit
69f47505e ('block: avoid recursive block_status call if possible'),
first contained in the QEMU 4.1.0 release.

This bug was reported by Michael Weiser on Launchpad:
https://bugs.launchpad.net/qemu/+bug/1846427

Kevin Wolf (3):
  coroutine: Add qemu_co_mutex_assert_locked()
  qcow2: Assert that qcow2_cache_get() callers hold s->lock
  qcow2: Fix corruption bug in qcow2_detect_metadata_preallocation()

 include/qemu/coroutine.h | 7 +++++++
 block/qcow2-cache.c      | 5 +++++
 block/qcow2-refcount.c   | 2 ++
 block/qcow2.c            | 3 ++-
 4 files changed, 16 insertions(+), 1 deletion(-)