cr: allocate security context for msg_msg

Since we create msg_msg structs by hand, we also need to ask LSM to allocate a security context. Otherwise selinux_msg_queue_msgrcv will throw a fit dereferencing msg->security (6b6b6b6b6b6b6000).

With this patch, cr tests can be executed with selinux enabled.

Signed-off-by Serge E. Hallyn <serue-r/[email protected]>

---
 ipc/checkpoint_msg.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

ipc/checkpoint_msg.c +3 -0

index 51385b0..fca8e7d 100644
@@ -17,6 +17,7 @@
 #include <linux/sched.h>
 #include <linux/syscalls.h>
 #include <linux/nsproxy.h>
+#include <linux/security.h>
 #include <linux/ipc_namespace.h>
 
 #include "util.h"

@@ -248,6 +249,8 @@ static struct msg_msg *restore_msg_contents_one(struct ckpt_ctx *ctx, int *clen)
 	msg->m_type = h->m_type;
 	msg->m_ts = h->m_ts;
 	*clen = h->m_ts;
+	ret = security_msg_msg_alloc(msg);
+
  out:
 	if (ret < 0 && msg) {
 		free_msg(msg);