[Qemu-devel] [PATCH v2 0/2] AioContext: fix deadlock after aio_context_acquire() race

[Stefan Hajnoczi <stefanha@redhat.com>]

v2:
 * Free BHs after thread_pool_free(), which calls qemu_bh_delete() [Cornelia]
 * Remove assert for leaked BHs since we don't know how many existing cases
   there are yet and QEMU 2.4-rc3 is a poor time to risk assertion failures

See Patch 2 for details on the deadlock after two aio_context_acquire() calls
race.  This caused dataplane to hang on startup.

Patch 1 is a memory leak fix for AioContext that's needed by Patch 2.

Stefan Hajnoczi (2):
  AioContext: avoid leaking deleted BHs on cleanup
  AioContext: force event loop iteration using BH

 async.c             | 29 +++++++++++++++++++++++++++--
 include/block/aio.h |  3 +++
 2 files changed, 30 insertions(+), 2 deletions(-)

-- 
2.4.3