[src/trunk]: src/sys/sys Make sure that biglock is unlocked before returning ...

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a55d04e32201
branches:  trunk
changeset: 762230:a55d04e32201
user:      matt <matt%NetBSD.org@localhost>
date:      Thu Feb 17 19:29:41 2011 +0000

description:
Make sure that biglock is unlocked before returning to userspace.

diffstat:

 sys/sys/userret.h |  5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diffs (19 lines):

diff -r 7c9b7b38f958 -r a55d04e32201 sys/sys/userret.h
--- a/sys/sys/userret.h Thu Feb 17 19:28:46 2011 +0000
+++ b/sys/sys/userret.h Thu Feb 17 19:29:41 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: userret.h,v 1.20 2009/02/25 19:58:03 mhitch Exp $      */
+/*     $NetBSD: userret.h,v 1.21 2011/02/17 19:29:41 matt Exp $        */
 
 /*-
  * Copyright (c) 1998, 2000, 2003, 2006, 2008 The NetBSD Foundation, Inc.
@@ -80,6 +80,9 @@
        struct cpu_info *ci;
 #endif
 
+       KASSERT(l->l_blcnt == 0);
+       KASSERT(curcpu()->ci_biglock_count == 0);
+
        /*
         * Handle "exceptional" events: pending signals, stop/exit actions,
         * etc.  Note that the event must be flagged BEFORE any AST is