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-rw-r--r--kernel/ptrace.c22
1 files changed, 9 insertions, 13 deletions
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index c9cf48b21f05..f62a568e84ec 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -235,16 +235,6 @@ out:
return retval;
}
-static inline void __ptrace_detach(struct task_struct *child, unsigned int data)
-{
- child->exit_code = data;
- /* .. re-parent .. */
- __ptrace_unlink(child);
- /* .. and wake it up. */
- if (child->exit_state != EXIT_ZOMBIE)
- wake_up_process(child);
-}
-
int ptrace_detach(struct task_struct *child, unsigned int data)
{
if (!valid_signal(data))
@@ -254,10 +244,16 @@ int ptrace_detach(struct task_struct *child, unsigned int data)
ptrace_disable(child);
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
- write_lock_irq(&tasklist_lock);
/* protect against de_thread()->release_task() */
- if (child->ptrace)
- __ptrace_detach(child, data);
+ write_lock_irq(&tasklist_lock);
+ if (child->ptrace) {
+ child->exit_code = data;
+
+ __ptrace_unlink(child);
+
+ if (!child->exit_state)
+ wake_up_process(child);
+ }
write_unlock_irq(&tasklist_lock);
return 0;