The AioContext must be unlocked before calling blk_co_unref(), because
it takes the AioContext lock internally in blk_unref_bh(), which is
scheduled in the main thread. If we don't unlock, the AioContext is
locked twice and nested event loops such as in bdrv_graph_wrlock() will
deadlock.
Cc: <qemu-stable@nongnu.org>
Fixes: https://issues.redhat.com/browse/RHEL-15965
Fixes: 0c7d204f50c382c6baac8c94bd57af4a022b3888
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <
20231208124352.30295-1-kwolf@redhat.com>
bdrv_co_lock(bs);
bdrv_drained_end(bs);
- blk_co_unref(blk);
bdrv_co_unlock(bs);
+
+ blk_co_unref(blk);
}
void qmp_block_stream(const char *job_id, const char *device,