workqueue: fix deadlock in worker_maybe_bind_and_lock()

[pandora-kernel.git] / kernel / utsname.c

diff --git a/kernel/utsname.c b/kernel/utsname.c
index 8a82b4b..4464617 100644 (file)
--- a/kernel/utsname.c
+++ b/kernel/utsname.c
@@ -14,6 +14,7 @@
 #include <linux/utsname.h>
 #include <linux/err.h>
 #include <linux/slab.h>
+#include <linux/user_namespace.h>
 
 static struct uts_namespace *create_uts_ns(void)
 {
@@ -30,7 +31,8 @@ static struct uts_namespace *create_uts_ns(void)
  * @old_ns: namespace to clone
  * Return NULL on error (failure to kmalloc), new ns otherwise
  */
-static struct uts_namespace *clone_uts_ns(struct uts_namespace *old_ns)
+static struct uts_namespace *clone_uts_ns(struct task_struct *tsk,
+                                         struct uts_namespace *old_ns)
 {
        struct uts_namespace *ns;
 
@@ -40,6 +42,7 @@ static struct uts_namespace *clone_uts_ns(struct uts_namespace *old_ns)
 
        down_read(&uts_sem);
        memcpy(&ns->name, &old_ns->name, sizeof(ns->name));
+       ns->user_ns = get_user_ns(task_cred_xxx(tsk, user)->user_ns);
        up_read(&uts_sem);
        return ns;
 }
@@ -50,8 +53,10 @@ static struct uts_namespace *clone_uts_ns(struct uts_namespace *old_ns)
  * utsname of this process won't be seen by parent, and vice
  * versa.
  */
-struct uts_namespace *copy_utsname(unsigned long flags, struct uts_namespace *old_ns)
+struct uts_namespace *copy_utsname(unsigned long flags,
+                                  struct task_struct *tsk)
 {
+       struct uts_namespace *old_ns = tsk->nsproxy->uts_ns;
        struct uts_namespace *new_ns;
 
        BUG_ON(!old_ns);
@@ -60,7 +65,7 @@ struct uts_namespace *copy_utsname(unsigned long flags, struct uts_namespace *ol
        if (!(flags & CLONE_NEWUTS))
                return old_ns;
 
-       new_ns = clone_uts_ns(old_ns);
+       new_ns = clone_uts_ns(tsk, old_ns);
 
        put_uts_ns(old_ns);
        return new_ns;
@@ -71,5 +76,6 @@ void free_uts_ns(struct kref *kref)
        struct uts_namespace *ns;
 
        ns = container_of(kref, struct uts_namespace, kref);
+       put_user_ns(ns->user_ns);
        kfree(ns);
 }