diff --git a/sys/arm64/arm64/trap.c b/sys/arm64/arm64/trap.c
--- a/sys/arm64/arm64/trap.c
+++ b/sys/arm64/arm64/trap.c
@@ -277,6 +277,7 @@
 	} else if (!ADDR_IS_CANONICAL(far)) {
 		/* We received a TBI/PAC/etc. fault from the kernel */
 		error = KERN_INVALID_ADDRESS;
+		pcb = td->td_pcb;
 		goto bad_far;
 	} else if (ADDR_IS_KERNEL(far)) {
 		/*