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-rw-r--r--kern/thread.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kern/thread.c b/kern/thread.c
index 17ac10bd..25d81771 100644
--- a/kern/thread.c
+++ b/kern/thread.c
@@ -2452,6 +2452,10 @@ thread_wakeup(struct thread *thread)
struct thread_runq *runq;
unsigned long flags;
+ if ((thread == NULL) || (thread == thread_self())) {
+ return;
+ }
+
/*
* There is at most one reference on threads that were never dispatched,
* in which case there is no need to lock anything.