I was able to reproduce it:
$ virsh start tsting error: Failed to start domain tsting error: internal error: process exited while connecting to monitor: qemu-system-x86_64: /build/qemu-v_zvmu/qemu-2.11+dfsg/util/aio-posix.c:592: aio_poll: Assertion `in_aio_context_home_thread(ctx)' failed.
following your description. Checking other versions for now...
I was able to reproduce it:
$ virsh start tsting qemu-v_ zvmu/qemu- 2.11+dfsg/ util/aio- posix.c: 592: aio_poll: Assertion `in_aio_ context_ home_thread( ctx)' failed.
error: Failed to start domain tsting
error: internal error: process exited while connecting to monitor: qemu-system-x86_64: /build/
following your description. Checking other versions for now...