bdrv_unref() is a no_coroutine_fn, so calling it from coroutine context
is invalid. Use bdrv_co_unref() instead.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 tests/unit/test-bdrv-drain.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/unit/test-bdrv-drain.c b/tests/unit/test-bdrv-drain.c
index ae4299ccfa..08bb0f9984 100644
--- a/tests/unit/test-bdrv-drain.c
+++ b/tests/unit/test-bdrv-drain.c
@@ -1019,7 +1019,7 @@ static void coroutine_fn test_co_delete_by_drain(void *opaque)
     g_assert_cmpint(bs->refcnt, ==, 1);
 
     if (!dbdd->detach_instead_of_delete) {
-        blk_unref(blk);
+        blk_co_unref(blk);
     } else {
         BdrvChild *c, *next_c;
         QLIST_FOREACH_SAFE(c, &bs->children, next, next_c) {
-- 
2.40.1

On Wed, May 10, 2023 at 10:35:59PM +0200, Kevin Wolf wrote:
> 
> bdrv_unref() is a no_coroutine_fn, so calling it from coroutine context
> is invalid. Use bdrv_co_unref() instead.
> 
> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
> ---
>  tests/unit/test-bdrv-drain.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Eric Blake <eblake@redhat.com>

> 
> diff --git a/tests/unit/test-bdrv-drain.c b/tests/unit/test-bdrv-drain.c
> index ae4299ccfa..08bb0f9984 100644
> --- a/tests/unit/test-bdrv-drain.c
> +++ b/tests/unit/test-bdrv-drain.c
> @@ -1019,7 +1019,7 @@ static void coroutine_fn test_co_delete_by_drain(void *opaque)
>      g_assert_cmpint(bs->refcnt, ==, 1);
>  
>      if (!dbdd->detach_instead_of_delete) {
> -        blk_unref(blk);
> +        blk_co_unref(blk);
>      } else {
>          BdrvChild *c, *next_c;
>          QLIST_FOREACH_SAFE(c, &bs->children, next, next_c) {
> -- 
> 2.40.1
> 
> 

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org