From 409b7f1ce025a8a8dbd698dae2fb9901beb427da Mon Sep 17 00:00:00 2001 From: alc Date: Sun, 21 Sep 2008 18:01:34 +0000 Subject: Prevent an integer overflow in vm_pageout_page_stats() on machines with a large number of physical pages. PR: 126158 Submitted by: Dmitry Tejblum MFC after: 3 days --- sys/vm/vm_pageout.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'sys/vm') diff --git a/sys/vm/vm_pageout.c b/sys/vm/vm_pageout.c index de17632..49abe42 100644 --- a/sys/vm/vm_pageout.c +++ b/sys/vm/vm_pageout.c @@ -1280,7 +1280,8 @@ vm_pageout_page_stats() pcount = cnt.v_active_count; fullintervalcount += vm_pageout_stats_interval; if (fullintervalcount < vm_pageout_full_stats_interval) { - tpcount = (vm_pageout_stats_max * cnt.v_active_count) / cnt.v_page_count; + tpcount = (int64_t)vm_pageout_stats_max * cnt.v_active_count / + cnt.v_page_count; if (pcount > tpcount) pcount = tpcount; } else { -- cgit v1.1