From 67e44048f0c1eaad2a4a4407f3c11cfc70a6caff Mon Sep 17 00:00:00 2001 From: Sepherosa Ziehau Date: Wed, 14 Sep 2016 06:30:14 +0000 Subject: [PATCH] hyperv/vmbus: Make sure that the sub-channel count is valid. MFC after: 1 week Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D7865 --- sys/dev/hyperv/vmbus/vmbus_chan.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/dev/hyperv/vmbus/vmbus_chan.c b/sys/dev/hyperv/vmbus/vmbus_chan.c index 6accc0e1bfc8..9365db3f8642 100644 --- a/sys/dev/hyperv/vmbus/vmbus_chan.c +++ b/sys/dev/hyperv/vmbus/vmbus_chan.c @@ -1346,6 +1346,8 @@ vmbus_subchan_get(struct vmbus_channel *pri_chan, int subchan_cnt) struct vmbus_channel **ret, *chan; int i; + KASSERT(subchan_cnt > 0, ("invalid sub-channel count %d", subchan_cnt)); + ret = malloc(subchan_cnt * sizeof(struct vmbus_channel *), M_TEMP, M_WAITOK);