D22133.1793793587.diff
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	Index: head/sys/arm64/arm64/trap.c
	===================================================================
	--- head/sys/arm64/arm64/trap.c
	+++ head/sys/arm64/arm64/trap.c
	@@ -87,6 +87,7 @@
	typedef void (abort_handler)(struct thread , struct trapframe , uint64_t,
	uint64_t, int);

	+static abort_handler align_abort;
	static abort_handler data_abort;

	static abort_handler *abort_handlers[] = {
	@@ -100,6 +101,7 @@
	[ISS_DATA_DFSC_PF_L1] = data_abort,
	[ISS_DATA_DFSC_PF_L2] = data_abort,
	[ISS_DATA_DFSC_PF_L3] = data_abort,
	+ [ISS_DATA_DFSC_ALIGN] = align_abort,
	};

	static __inline void
	@@ -163,6 +165,17 @@
	call_trapsignal(td, SIGILL, ILL_ILLOPN, (void *)frame->tf_elr);
	userret(td, frame);
	}
	+}
	+
	+static void
	+align_abort(struct thread td, struct trapframe frame, uint64_t esr,
	+ uint64_t far, int lower)
	+{
	+ if (!lower)
	+ panic("Misaligned access from kernel space!");
	+
	+ call_trapsignal(td, SIGBUS, BUS_ADRALN, (void *)frame->tf_elr);
	+ userret(td, frame);
	}

	static void