[src/trunk]: src/sys/kern Don't check pserialize_not_in_read_section after panic

[ozaki-r <ozaki-r%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/ce161b59b5c9
branches:  trunk
changeset: 998389:ce161b59b5c9
user:      ozaki-r <ozaki-r%NetBSD.org@localhost>
date:      Wed Apr 17 02:29:43 2019 +0000

description:
Don't check pserialize_not_in_read_section after panic

It can cause a false positive assertion failure.

diffstat:

 sys/kern/kern_mutex.c  |  6 +++---
 sys/kern/kern_rwlock.c |  6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diffs (58 lines):

diff -r 606b6282b6e2 -r ce161b59b5c9 sys/kern/kern_mutex.c
--- a/sys/kern/kern_mutex.c     Tue Apr 16 23:14:34 2019 +0000
+++ b/sys/kern/kern_mutex.c     Wed Apr 17 02:29:43 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kern_mutex.c,v 1.76 2019/03/10 12:49:48 skrll Exp $    */
+/*     $NetBSD: kern_mutex.c,v 1.77 2019/04/17 02:29:43 ozaki-r Exp $  */
 
 /*-
  * Copyright (c) 2002, 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -40,7 +40,7 @@
 #define        __MUTEX_PRIVATE
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_mutex.c,v 1.76 2019/03/10 12:49:48 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_mutex.c,v 1.77 2019/04/17 02:29:43 ozaki-r Exp $");
 
 #include <sys/param.h>
 #include <sys/atomic.h>
@@ -524,9 +524,9 @@
        MUTEX_ASSERT(mtx, curthread != 0);
        MUTEX_ASSERT(mtx, !cpu_intr_p());
        MUTEX_WANTLOCK(mtx);
-       KDASSERT(pserialize_not_in_read_section());
 
        if (panicstr == NULL) {
+               KDASSERT(pserialize_not_in_read_section());
                LOCKDEBUG_BARRIER(&kernel_lock, 1);
        }
 
diff -r 606b6282b6e2 -r ce161b59b5c9 sys/kern/kern_rwlock.c
--- a/sys/kern/kern_rwlock.c    Tue Apr 16 23:14:34 2019 +0000
+++ b/sys/kern/kern_rwlock.c    Wed Apr 17 02:29:43 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kern_rwlock.c,v 1.52 2018/08/31 01:23:57 ozaki-r Exp $ */
+/*     $NetBSD: kern_rwlock.c,v 1.53 2019/04/17 02:29:43 ozaki-r Exp $ */
 
 /*-
  * Copyright (c) 2002, 2006, 2007, 2008, 2009 The NetBSD Foundation, Inc.
@@ -38,7 +38,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_rwlock.c,v 1.52 2018/08/31 01:23:57 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_rwlock.c,v 1.53 2019/04/17 02:29:43 ozaki-r Exp $");
 
 #define        __RWLOCK_PRIVATE
 
@@ -290,9 +290,9 @@
        RW_ASSERT(rw, !cpu_intr_p());
        RW_ASSERT(rw, curthread != 0);
        RW_WANTLOCK(rw, op);
-       KDASSERT(pserialize_not_in_read_section());
 
        if (panicstr == NULL) {
+               KDASSERT(pserialize_not_in_read_section());
                LOCKDEBUG_BARRIER(&kernel_lock, 1);
        }