This is the full version of the simple patch: @@ -473,7 +475,9 @@ break; } if (!state) { + qemu_mutex_unlock(&s->mutex); aio_poll(bdrv_get_aio_context(bs), true); + qemu_mutex_lock(&s->mutex); } } while(!state);
that was tested by Richard last week. Richard, please retest with your test case. Thanks, Paolo Paolo Bonzini (4): curl: strengthen assertion in curl_clean_state curl: never invoke callbacks with s->mutex held curl: avoid recursive locking of BDRVCURLState mutex curl: improve search for unused CURLState block/curl.c | 78 ++++++++++++++++++++++++++++++++++++++++++------------------ 1 file changed, 55 insertions(+), 23 deletions(-) -- 2.12.2