Merge branch 'next' into for-linus

1 files changed, 17 insertions, 3 deletions

diff --git a/kernel/cred.c b/kernel/cred.c
index 8ef31f53c44c..5791612a4045 100644
--- a/kernel/cred.c
+++ b/kernel/cred.c
@@ -8,7 +8,7 @@
  * as published by the Free Software Foundation; either version
  * 2 of the Licence, or (at your option) any later version.
  */
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/cred.h>
 #include <linux/slab.h>
 #include <linux/sched.h>
@@ -644,6 +644,9 @@ void __init cred_init(void)
  */
 struct cred *prepare_kernel_cred(struct task_struct *daemon)
 {
+#ifdef CONFIG_KEYS
+        struct thread_group_cred *tgcred;
+#endif
         const struct cred *old;
         struct cred *new;
 
@@ -651,6 +654,14 @@ struct cred *prepare_kernel_cred(struct task_struct *daemon)
         if (!new)
                 return NULL;
 
+#ifdef CONFIG_KEYS
+        tgcred = kmalloc(sizeof(*tgcred), GFP_KERNEL);
+        if (!tgcred) {
+                kmem_cache_free(cred_jar, new);
+                return NULL;
+        }
+#endif
+
         kdebug("prepare_kernel_cred() alloc %p", new);
 
         if (daemon)
@@ -667,8 +678,11 @@ struct cred *prepare_kernel_cred(struct task_struct *daemon)
         get_group_info(new->group_info);
 
 #ifdef CONFIG_KEYS
-        atomic_inc(&init_tgcred.usage);
-        new->tgcred = &init_tgcred;
+        atomic_set(&tgcred->usage, 1);
+        spin_lock_init(&tgcred->lock);
+        tgcred->process_keyring = NULL;
+        tgcred->session_keyring = NULL;
+        new->tgcred = tgcred;
         new->request_key_auth = NULL;
         new->thread_keyring = NULL;
         new->jit_keyring = KEY_REQKEY_DEFL_THREAD_KEYRING;