1 files changed, 14 insertions, 2 deletions

diff --git a/kernel/signal.c b/kernel/signal.c
index 84917fe507f7..6af1210092c3 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1623,7 +1623,6 @@ static void ptrace_stop(int exit_code, int clear_code, siginfo_t *info)
         /* Let the debugger run.  */
         __set_current_state(TASK_TRACED);
         spin_unlock_irq(&current->sighand->siglock);
-        try_to_freeze();
         read_lock(&tasklist_lock);
         if (!unlikely(killed) && may_ptrace_stop()) {
                 do_notify_parent_cldstop(current, CLD_TRAPPED);
@@ -1641,6 +1640,13 @@ static void ptrace_stop(int exit_code, int clear_code, siginfo_t *info)
         }
 
         /*
+         * While in TASK_TRACED, we were considered "frozen enough".
+         * Now that we woke up, it's crucial if we're supposed to be
+         * frozen that we freeze now before running anything substantial.
+         */
+        try_to_freeze();
+
+        /*
          * We are back.  Now reacquire the siglock before touching
          * last_siginfo, so that we are sure to have synchronized with
          * any signal-sending on another CPU that wants to examine it.
@@ -1757,9 +1763,15 @@ int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka,
         sigset_t *mask = &current->blocked;
         int signr = 0;
 
+relock:
+        /*
+         * We'll jump back here after any time we were stopped in TASK_STOPPED.
+         * While in TASK_STOPPED, we were considered "frozen enough".
+         * Now that we woke up, it's crucial if we're supposed to be
+         * frozen that we freeze now before running anything substantial.
+         */
         try_to_freeze();
 
-relock:
         spin_lock_irq(&current->sighand->siglock);
         for (;;) {
                 struct k_sigaction *ka;