pINT: Skip __queue_work() probe when called from any non-task context

Our task integrity checks assume that the current task is in consistent
state, which was apparently not guaranteed here.

Amends 863b28d
Fixes #432

Author: solardiz

src/modules/exploit_detection/syscalls/pCFI/p___queue_work/p___queue_work.c

@@ -26,7 +26,7 @@ static int p_pcfi___queue_work_entry(struct kprobe *p_ri, struct pt_regs *p_regs
 
    p_ed_pcfi_cpu(0);
 
-   if (!in_irq() && p_is_ed_task(current)) {
+   if (in_task() && p_is_ed_task(current)) {
       /* Do not take ED lock */
       if ((p_tmp = ed_task_trylock_current())) {
          p_ed_validate_current(p_tmp);