From 30a8a5f7a6648c5dd6042677c11e9d5d9a671476 Mon Sep 17 00:00:00 2001
From: Konstantin Belousov <kib@FreeBSD.org>
Date: Tue, 24 May 2016 10:21:39 +0000
Subject: [PATCH] In vm_page_alloc_contig(), on vm_page_insert() failure, mark
 each freed page as VPO_UNMANAGED.  Otherwise vm_pge_free_toq() insists on
 owning the page lock.

Previously, VPO_UNMANAGED was only set up to the last processed page.

Reviewed by:	alc
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
---
 sys/vm/vm_page.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c
index 0ea8d863a35..de08bcedba1 100644
--- a/sys/vm/vm_page.c
+++ b/sys/vm/vm_page.c
@@ -1944,8 +1944,10 @@ retry:
 				    m < &m_ret[npages]; m++) {
 					if ((req & VM_ALLOC_WIRED) != 0)
 						m->wire_count = 0;
-					if (m >= m_tmp)
+					if (m >= m_tmp) {
 						m->object = NULL;
+						m->oflags |= VPO_UNMANAGED;
+					}
 					vm_page_free(m);
 				}
 				return (NULL);