[PATCH 3/5] kern/processor.c: check if threads is NULL

[Marin Ramesa]

When addr is equal to zero, array access from pointer threads
results in a dereference of null pointer. Avoid this by checking
if it's NULL.

* kern/processor.c (threads): Check if it's NULL.

---
 kern/processor.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kern/processor.c b/kern/processor.c
index 0cb9974..9da06f5 100644
--- a/kern/processor.c
+++ b/kern/processor.c
@@ -924,7 +924,8 @@ processor_set_things(
                     thread = (thread_t) queue_next(&thread->pset_threads)) {
                        /* take ref for convert_thread_to_port */
                        thread_reference(thread);
-                       threads[i] = thread;
+                       if (threads != (thread_t *)0)
+                               threads[i] = thread;
                }
                assert(queue_end(&pset->threads, (queue_entry_t) thread));
                break;
-- 
1.8.1.4