1 files changed, 5 insertions, 0 deletions

diff --git a/kernel/signal.c b/kernel/signal.c
index e667be6907d7..534fec266a33 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -90,6 +90,11 @@ static bool sig_task_ignored(struct task_struct *t, int sig, bool force)
             handler == SIG_DFL && !(force && sig_kernel_only(sig)))
                 return true;
 
+        /* Only allow kernel generated signals to this kthread */
+        if (unlikely((t->flags & PF_KTHREAD) &&
+                     (handler == SIG_KTHREAD_KERNEL) && !force))
+                return true;
+
         return sig_handler_ignored(handler, sig);
 }