On 11/30, Roman Gushchin wrote:

 void recalc_sigpending(void)
 {
 	if (!recalc_sigpending_tsk(current) && !freezing(current) &&
-	    !klp_patch_pending(current))
+	    !klp_patch_pending(current) && !cgroup_task_frozen(current))

I must have missed something... but shouldn't it check JOBCTL_TRAP_FREEZE
rather than ->frozen?

Oleg.