signal: Avoid corrupting si_pid and si_uid in do_notify_parent

[platform/kernel/linux-rpi.git] / kernel / signal.c

diff --git a/kernel/signal.c b/kernel/signal.c
index 7d3d35e..2b9295f 100644 (file)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1993,8 +1993,12 @@ bool do_notify_parent(struct task_struct *tsk, int sig)
                if (psig->action[SIGCHLD-1].sa.sa_handler == SIG_IGN)
                        sig = 0;
        }
+       /*
+        * Send with __send_signal as si_pid and si_uid are in the
+        * parent's namespaces.
+        */
        if (valid_signal(sig) && sig)
-               __group_send_sig_info(sig, &info, tsk->parent);
+               __send_signal(sig, &info, tsk->parent, PIDTYPE_TGID, false);
        __wake_up_parent(tsk, tsk->parent);
        spin_unlock_irqrestore(&psig->siglock, flags);