Another instance: https://jenkins.ceph.com/job/ceph-pull-requests/9411/console
/home/jenkins-build/build/workspace/ceph-pull-requests/src/librbd/journal/Replay.cc: In function 'librbd::journal::Replay<ImageCtxT>::~Replay() [with ImageCtxT = librbd::ImageCtx]' thread 7f5ceb252700 time 2016-07-21 05:20:05.569267
/home/jenkins-build/build/workspace/ceph-pull-requests/src/librbd/journal/Replay.cc: 156: FAILED assert(m_aio_modify_safe_contexts.empty())
ceph version v11.0.0-813-gbdc800b (bdc800b23d62dc939a34a88bc84dea0ddaac4484)
1: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x8b) [0x7f5cf8d4621b]
2: (librbd::journal::Replay<librbd::ImageCtx>::~Replay()+0x1b8) [0x8801a8]
3: (librbd::Journal<librbd::ImageCtx>::stop_external_replay()+0x68) [0x8375b8]
4: (boost::detail::function::void_function_obj_invoker1<rbd::mirror::ImageReplayer<librbd::ImageCtx>::replay_flush()::{lambda(int)#1}, void, int>::invoke(boost::detail::function::function_buffer&, int)+0x21) [0x650051]
5: (FunctionContext::finish(int)+0x1a) [0x651afa]
6: (Context::complete(int)+0x9) [0x64ede9]
get_commit_positions: client: [id=local mirror uuid, commit_position=[positions=[[object_number=3, tag_tid=2, entry_tid=7], [object_number=2, tag_tid=2, entry_tid=6], [object_number=1, tag_tid=2, entry_tid=5], [object_number=0, tag_tid=2, entry_tid=4]]], state=connected]
m_replayer->flush()
get_commit_positions: client: [id=, commit_position=[positions=[[object_number=2, tag_tid=11, entry_tid=10], [object_number=1, tag_tid=11, entry_tid=9], [object_number=0, tag_tid=11, entry_tid=8], [object_number=3, tag_tid=11, entry_tid=7]]], state=connected]
get_commit_positions: client: [id=local mirror uuid, commit_position=[positions=[[object_number=3, tag_tid=2, entry_tid=7], [object_number=2, tag_tid=2, entry_tid=6], [object_number=1, tag_tid=2, entry_tid=5], [object_number=0, tag_tid=2, entry_tid=4]]], state=connected]
7: (ThreadPool::worker(ThreadPool::WorkThread*)+0xb65) [0x94ac75]
8: (ThreadPool::WorkThread::entry()+0x10) [0x94bc30]
9: (()+0x8182) [0x7f5d014f3182]
10: (clone()+0x6d) [0x7f5cf75c44ad]