[CRIU] [PATCH 04/21] ns: Fix forked task user_ns assignment

[Kirill Tkhai]

Child reaper of a ns have initial user_ns equal to its pid_ns->user_ns.

Signed-off-by: Kirill Tkhai <ktkhai at virtuozzo.com>
---
 criu/cr-restore.c |   13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/criu/cr-restore.c b/criu/cr-restore.c
index 21ba39ec3..fabfb80ce 100644
--- a/criu/cr-restore.c
+++ b/criu/cr-restore.c
@@ -1317,15 +1317,18 @@ static inline int fork_with_pid(struct pstree_item *item)
 	pid_t pid = vpid(item);
 	struct ns_id *pid_ns;
 
-	if (item != root_item)
-		item->user_ns = current->user_ns;
-	else
-		item->user_ns = root_user_ns;
-
 	pid_ns = lookup_ns_by_id(item->ids->pid_ns_id, &pid_ns_desc);
 	BUG_ON(!pid_ns);
 	item->pid_for_children_ns = pid_ns;
 
+	if (item != root_item) {
+		if (last_level_pid(item->pid) == INIT_PID)
+			item->user_ns = pid_ns->user_ns;
+		else
+			item->user_ns = current->user_ns;
+	} else
+		item->user_ns = root_user_ns;
+
 	if (item->pid->state != TASK_HELPER) {
 		if (open_core(pid, &ca.core))
 			return -1;