Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...

[deliverable/linux.git] / kernel / exit.c

diff --git a/kernel/exit.c b/kernel/exit.c
index ceffc67b564ae28eb6b46be67bfcf4f0ab7e8c6a..03120229db2802929065a210930e41c7fa701ba0 100644 (file)
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -771,9 +771,12 @@ static void forget_original_parent(struct task_struct *father)
        struct task_struct *p, *n, *reaper;
        LIST_HEAD(dead_children);
 
-       exit_ptrace(father);
-
        write_lock_irq(&tasklist_lock);
+       /*
+        * Note that exit_ptrace() and find_new_reaper() might
+        * drop tasklist_lock and reacquire it.
+        */
+       exit_ptrace(father);
        reaper = find_new_reaper(father);
 
        list_for_each_entry_safe(p, n, &father->children, sibling) {
@@ -1383,8 +1386,7 @@ static int wait_task_stopped(struct wait_opts *wo,
        if (!unlikely(wo->wo_flags & WNOWAIT))
                *p_code = 0;
 
-       /* don't need the RCU readlock here as we're holding a spinlock */
-       uid = __task_cred(p)->uid;
+       uid = task_uid(p);
 unlock_sig:
        spin_unlock_irq(&p->sighand->siglock);
        if (!exit_code)
@@ -1457,7 +1459,7 @@ static int wait_task_continued(struct wait_opts *wo, struct task_struct *p)
        }
        if (!unlikely(wo->wo_flags & WNOWAIT))
                p->signal->flags &= ~SIGNAL_STOP_CONTINUED;
-       uid = __task_cred(p)->uid;
+       uid = task_uid(p);
        spin_unlock_irq(&p->sighand->siglock);
 
        pid = task_pid_vnr(p);