From b236017acffa73d52eac9427f42d8993067d20fb Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Tue, 31 May 2016 12:26:41 -0500 Subject: [PATCH] ipc: Initialize ipc_namespace->user_ns early. Allow the ipc namespace initialization code to depend on ns->user_ns being set during initialization. In particular this allows mq_init_ns to use ns->user_ns for permission checks and initializating s_user_ns while the the mq filesystem is being mounted. Acked-by: Seth Forshee Suggested-by: Seth Forshee Signed-off-by: "Eric W. Biederman" --- ipc/namespace.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/ipc/namespace.c b/ipc/namespace.c index 068caf18d565..04cb07eb81f1 100644 --- a/ipc/namespace.c +++ b/ipc/namespace.c @@ -34,8 +34,11 @@ static struct ipc_namespace *create_ipc_ns(struct user_namespace *user_ns, ns->ns.ops = &ipcns_operations; atomic_set(&ns->count, 1); + ns->user_ns = get_user_ns(user_ns); + err = mq_init_ns(ns); if (err) { + put_user_ns(ns->user_ns); ns_free_inum(&ns->ns); kfree(ns); return ERR_PTR(err); @@ -46,8 +49,6 @@ static struct ipc_namespace *create_ipc_ns(struct user_namespace *user_ns, msg_init_ns(ns); shm_init_ns(ns); - ns->user_ns = get_user_ns(user_ns); - return ns; } -- 2.30.2