1 files changed, 12 insertions, 1 deletions

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 24d04477b257..78ab24a7b0e4 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -96,9 +96,20 @@ void __ptrace_unlink(struct task_struct *child)
          */
         if (!(child->flags & PF_EXITING) &&
             (child->signal->flags & SIGNAL_STOP_STOPPED ||
-             child->signal->group_stop_count))
+             child->signal->group_stop_count)) {
                 child->jobctl |= JOBCTL_STOP_PENDING;
 
+                /*
+                 * This is only possible if this thread was cloned by the
+                 * traced task running in the stopped group, set the signal
+                 * for the future reports.
+                 * FIXME: we should change ptrace_init_task() to handle this
+                 * case.
+                 */
+                if (!(child->jobctl & JOBCTL_STOP_SIGMASK))
+                        child->jobctl |= SIGSTOP;
+        }
+
         /*
          * If transition to TASK_STOPPED is pending or in TASK_TRACED, kick
          * @child in the butt.  Note that @resume should be used iff @child