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- exit1(): for DIAGNOSTIC, call kernel_lock_plug_leak() (temporary). 

- exit_lwps(): call lwp_need_userret() or LWP might never notice.
This commit is contained in:
ad 2020-01-27 21:09:33 +00:00
parent a2078247b6
commit 8959bb6327
1 changed files with 7 additions and 2 deletions
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9
sys/kern/kern_exit.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_exit.c,v 1.280 2020/01/22 12:23:04 ad Exp $ */
/* $NetBSD: kern_exit.c,v 1.281 2020/01/27 21:09:33 ad Exp $ */
/*-
* Copyright (c) 1998, 1999, 2006, 2007, 2008 The NetBSD Foundation, Inc.
@ -67,7 +67,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_exit.c,v 1.280 2020/01/22 12:23:04 ad Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_exit.c,v 1.281 2020/01/27 21:09:33 ad Exp $");
#include "opt_ktrace.h"
#include "opt_dtrace.h"
@ -99,6 +99,7 @@ __KERNEL_RCSID(0, "$NetBSD: kern_exit.c,v 1.280 2020/01/22 12:23:04 ad Exp $");
#include <sys/syscallargs.h>
#include <sys/kauth.h>
#include <sys/sleepq.h>
#include <sys/lock.h>
#include <sys/lockdebug.h>
#include <sys/ktrace.h>
#include <sys/cpu.h>
@ -204,6 +205,9 @@ exit1(struct lwp *l, int exitcode, int signo)
p = l->l_proc;
/* XXX Temporary. */
kernel_lock_plug_leak();
/* Verify that we hold no locks other than p->p_lock. */
LOCKDEBUG_BARRIER(p->p_lock, 0);
KASSERTMSG(curcpu()->ci_biglock_count == 0, "kernel_lock leaked");
@ -617,6 +621,7 @@ retry:
setrunnable(l2);
continue;
}
lwp_need_userret(l2);
lwp_unlock(l2);
}