diff --git a/sys/cddl/dev/dtrace/amd64/dtrace_subr.c b/sys/cddl/dev/dtrace/amd64/dtrace_subr.c
index df39d2ec1e92..0e9fc6f796d5 100644
--- a/sys/cddl/dev/dtrace/amd64/dtrace_subr.c
+++ b/sys/cddl/dev/dtrace/amd64/dtrace_subr.c
@@ -384,6 +384,8 @@ dtrace_gethrestime(void)
 int
 dtrace_trap(struct trapframe *frame, u_int type)
 {
+	uint16_t nofault;
+
 	/*
 	 * A trap can occur while DTrace executes a probe. Before
 	 * executing the probe, DTrace blocks re-scheduling and sets
@@ -393,7 +395,12 @@ dtrace_trap(struct trapframe *frame, u_int type)
 	 *
 	 * Check if DTrace has enabled 'no-fault' mode:
 	 */
-	if ((cpu_core[curcpu].cpuc_dtrace_flags & CPU_DTRACE_NOFAULT) != 0) {
+	sched_pin();
+	nofault = cpu_core[curcpu].cpuc_dtrace_flags & CPU_DTRACE_NOFAULT;
+	sched_unpin();
+	if (nofault) {
+		KASSERT((read_rflags() & PSL_I) == 0, ("interrupts enabled"));
+
 		/*
 		 * There are only a couple of trap types that are expected.
 		 * All the rest will be handled in the usual way.
diff --git a/sys/cddl/dev/dtrace/i386/dtrace_subr.c b/sys/cddl/dev/dtrace/i386/dtrace_subr.c
index b70eab964f10..09257b9ce056 100644
--- a/sys/cddl/dev/dtrace/i386/dtrace_subr.c
+++ b/sys/cddl/dev/dtrace/i386/dtrace_subr.c
@@ -386,6 +386,8 @@ dtrace_gethrestime(void)
 int
 dtrace_trap(struct trapframe *frame, u_int type)
 {
+	uint16_t nofault;
+
 	/*
 	 * A trap can occur while DTrace executes a probe. Before
 	 * executing the probe, DTrace blocks re-scheduling and sets
@@ -395,7 +397,12 @@ dtrace_trap(struct trapframe *frame, u_int type)
 	 *
 	 * Check if DTrace has enabled 'no-fault' mode:
 	 */
-	if ((cpu_core[curcpu].cpuc_dtrace_flags & CPU_DTRACE_NOFAULT) != 0) {
+	sched_pin();
+	nofault = cpu_core[curcpu].cpuc_dtrace_flags & CPU_DTRACE_NOFAULT;
+	sched_unpin();
+	if (nofault) {
+		KASSERT((read_eflags() & PSL_I) == 0, ("interrupts enabled"));
+
 		/*
 		 * There are only a couple of trap types that are expected.
 		 * All the rest will be handled in the usual way.