[CRIU] [PATCH v3 2/6] ns: Use CLONE_VM in create_user_ns_hierarhy_fn()

[Kirill Tkhai]

This function may call functions like open_proc(),
so use CLONE_VM to reflect children open files in
parent memory.

v3: New

Signed-off-by: Kirill Tkhai <ktkhai at virtuozzo.com>
---
 criu/namespaces.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/criu/namespaces.c b/criu/namespaces.c
index 6278267f..fc75e5fa 100644
--- a/criu/namespaces.c
+++ b/criu/namespaces.c
@@ -2227,7 +2227,7 @@ static int create_user_ns_hierarhy_fn(void *in_arg)
 		arg->me = child;
 		futex_init(futex);
 
-		pid = clone(create_user_ns_hierarhy_fn, stack, CLONE_NEWUSER | CLONE_FILES | SIGCHLD, arg);
+		pid = clone(create_user_ns_hierarhy_fn, stack, CLONE_NEWUSER | CLONE_VM | CLONE_FILES | SIGCHLD, arg);
 		if (pid < 0) {
 			pr_perror("Can't clone");
 			goto out;
@@ -2244,8 +2244,10 @@ static int create_user_ns_hierarhy_fn(void *in_arg)
 		errno = 0;
 		if (wait(&status) < 0 || !WIFEXITED(status) || WEXITSTATUS(status)) {
 			pr_perror("Child process waiting: %d", status);
+			close_pid_proc();
 			goto out;
 		}
+		close_pid_proc();
 	}
 
 	ret = 0;