diff options
| -rw-r--r-- | block/nbd.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/block/nbd.c b/block/nbd.c index c26dc5a54f..1d4668d42d 100644 --- a/block/nbd.c +++ b/block/nbd.c @@ -443,6 +443,11 @@ nbd_co_establish_connection(BlockDriverState *bs, Error **errp) BDRVNBDState *s = bs->opaque; NBDConnectThread *thr = s->connect_thread; + if (!thr) { + /* detached */ + return -1; + } + qemu_mutex_lock(&thr->mutex); switch (thr->state) { @@ -486,6 +491,12 @@ nbd_co_establish_connection(BlockDriverState *bs, Error **errp) s->wait_connect = true; qemu_coroutine_yield(); + if (!s->connect_thread) { + /* detached */ + return -1; + } + assert(thr == s->connect_thread); + qemu_mutex_lock(&thr->mutex); switch (thr->state) { |