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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Wed, 17 Aug 2016 07:09:23 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r304262 - in stable/10/sys: amd64/amd64 i386/i386
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Author: kib
Date: Wed Aug 17 07:09:22 2016
New Revision: 304262
URL: https://svnweb.freebsd.org/changeset/base/304262

Log:
  MFC r303913:
  Unconditionally perform checks that FPU region was entered, when #NM
  exception is caught in kernel mode.

Modified:
  stable/10/sys/amd64/amd64/trap.c
  stable/10/sys/i386/i386/trap.c
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/amd64/amd64/trap.c
==============================================================================
--- stable/10/sys/amd64/amd64/trap.c	Wed Aug 17 07:07:29 2016	(r304261)
+++ stable/10/sys/amd64/amd64/trap.c	Wed Aug 17 07:09:22 2016	(r304262)
@@ -448,8 +448,8 @@ trap(struct trapframe *frame)
 			goto out;
 
 		case T_DNA:
-			KASSERT(!PCB_USER_FPU(td->td_pcb),
-			    ("Unregistered use of FPU in kernel"));
+			if (PCB_USER_FPU(td->td_pcb))
+				panic("Unregistered use of FPU in kernel");
 			fpudna();
 			goto out;
 

Modified: stable/10/sys/i386/i386/trap.c
==============================================================================
--- stable/10/sys/i386/i386/trap.c	Wed Aug 17 07:07:29 2016	(r304261)
+++ stable/10/sys/i386/i386/trap.c	Wed Aug 17 07:09:22 2016	(r304262)
@@ -534,8 +534,8 @@ trap(struct trapframe *frame)
 
 		case T_DNA:
 #ifdef DEV_NPX
-			KASSERT(!PCB_USER_FPU(td->td_pcb),
-			    ("Unregistered use of FPU in kernel"));
+			if (PCB_USER_FPU(td->td_pcb))
+				panic("Unregistered use of FPU in kernel");
 			if (npxdna())
 				goto out;
 #endif