Index: sys/arm64/arm64/swtch.S
===================================================================
--- sys/arm64/arm64/swtch.S
+++ sys/arm64/arm64/swtch.S
@@ -241,11 +241,6 @@
 	mov	fp, #0	/* Stack traceback stops here. */
 	bl	_C_LABEL(fork_exit)
 
-	/* Restore sp and lr */
-	ldp	x0, x1, [sp]
-	msr	sp_el0, x0
-	mov	lr, x1
-
 	/* Restore the registers other than x0 and x1 */
 	ldp	x2, x3, [sp, #TF_X + 2 * 8]
 	ldp	x4, x5, [sp, #TF_X + 4 * 8]
@@ -265,10 +260,15 @@
 
 	/*
 	 * Disable interrupts to avoid
-	 * overwriting spsr_el1 by an IRQ exception.
+	 * overwriting spsr_el1 and sp_el0 by an IRQ exception.
 	 */
 	msr	daifset, #2
 
+	/* Restore sp and lr */
+	ldp	x0, x1, [sp]
+	msr	sp_el0, x0
+	mov	lr, x1
+
 	/* Restore elr and spsr */
 	ldp	x0, x1, [sp, #16]
 	msr	elr_el1, x0