[CRIU] [PATCH] pstree: fix prepare_dummy_pstree after rework of PID namespace

[Mike Rapoport]

Since commit 84eedc49a (pstree: Make lookup_create_pid() able to create
tasks with pid->level > 1) the read_pstree_image function presumes that
namespaces image is already parsed.
This patch ensures that this is the case for prepare_dummy_pstree users.

Signed-off-by: Mike Rapoport <rppt at linux.vnet.ibm.com>
---
 criu/pstree.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/criu/pstree.c b/criu/pstree.c
index 9ae1912..cf24c99 100644
--- a/criu/pstree.c
+++ b/criu/pstree.c
@@ -1416,6 +1416,9 @@ int prepare_dummy_pstree(void)
 	if (prepare_task_entries() == -1)
 		return -1;
 
+	if (read_ns_with_hookups())
+		return -1;
+
 	if (read_pstree_image(&dummy) == -1)
 		return -1;
 
-- 
2.7.4