From 02cd44f6d4ad54cb5111ce280f8097c36a70c96e Mon Sep 17 00:00:00 2001
From: kib <kib@FreeBSD.org>
Date: Sat, 21 Jul 2012 21:39:02 +0000
Subject: [PATCH] MFamd64 r238669: Force clean FPU state in PCB user FPU save
 area for PT_I386_{GET,SET}XMMREGS.

Reported by:	bde
MFC after:	1 week
---
 sys/i386/i386/ptrace_machdep.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/i386/i386/ptrace_machdep.c b/sys/i386/i386/ptrace_machdep.c
index 4608c9b939d4..5965a694c6c4 100644
--- a/sys/i386/i386/ptrace_machdep.c
+++ b/sys/i386/i386/ptrace_machdep.c
@@ -54,10 +54,12 @@ cpu_ptrace(struct thread *td, int req, void *addr, int data)
 	fpstate = &td->td_pcb->pcb_user_save.sv_xmm;
 	switch (req) {
 	case PT_GETXMMREGS:
+		npxgetregs(td);
 		error = copyout(fpstate, addr, sizeof(*fpstate));
 		break;
 
 	case PT_SETXMMREGS:
+		npxgetregs(td);
 		error = copyin(addr, fpstate, sizeof(*fpstate));
 		fpstate->sv_env.en_mxcsr &= cpu_mxcsr_mask;
 		break;