Module Name: src
Committed By: ad
Date: Wed Oct 4 20:45:14 UTC 2023
Modified Files:
src/sys/kern: kern_lwp.c
Log Message:
lwp_wait(): restart the loop if p->p_lock dropped to reap zombie (paranoid).
To generate a diff of this commit:
cvs rdiff -u -r1.260 -r1.261 src/sys/kern/kern_lwp.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/kern/kern_lwp.c
diff -u src/sys/kern/kern_lwp.c:1.260 src/sys/kern/kern_lwp.c:1.261
--- src/sys/kern/kern_lwp.c:1.260 Wed Oct 4 20:44:15 2023
+++ src/sys/kern/kern_lwp.c Wed Oct 4 20:45:13 2023
@@ -1,4 +1,4 @@
-/* $NetBSD: kern_lwp.c,v 1.260 2023/10/04 20:44:15 ad Exp $ */
+/* $NetBSD: kern_lwp.c,v 1.261 2023/10/04 20:45:13 ad Exp $ */
/*-
* Copyright (c) 2001, 2006, 2007, 2008, 2009, 2019, 2020, 2023
@@ -217,7 +217,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_lwp.c,v 1.260 2023/10/04 20:44:15 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_lwp.c,v 1.261 2023/10/04 20:45:13 ad Exp $");
#include "opt_ddb.h"
#include "opt_lockdebug.h"
@@ -612,10 +612,11 @@ lwp_wait(struct lwp *l, lwpid_t lid, lwp
* First off, drain any detached LWP that is waiting to be
* reaped.
*/
- while ((l2 = p->p_zomblwp) != NULL) {
+ if ((l2 = p->p_zomblwp) != NULL) {
p->p_zomblwp = NULL;
lwp_free(l2, false, false);/* releases proc mutex */
mutex_enter(p->p_lock);
+ continue;
}
/*
