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-rw-r--r--sys/kern/kern_ktrace.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/kern/kern_ktrace.c b/sys/kern/kern_ktrace.c
index 2b7ee33..0ca4a30 100644
--- a/sys/kern/kern_ktrace.c
+++ b/sys/kern/kern_ktrace.c
@@ -444,6 +444,8 @@ void
ktruserret(struct thread *td)
{
+ if (STAILQ_EMPTY(&td->td_proc->p_ktr))
+ return;
ktrace_enter(td);
sx_xlock(&ktrace_sx);
ktr_drain(td);
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