From e04393d6dedbbb7c8bab1748675e01986af7a3bc Mon Sep 17 00:00:00 2001
From: Poul-Henning Kamp <phk@FreeBSD.org>
Date: Sun, 15 Jun 2003 20:31:04 +0000
Subject: [PATCH] In specfs::vop_specstratey(), assert that the vnode and
 buffer agree about the device.

---
 sys/fs/specfs/spec_vnops.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sys/fs/specfs/spec_vnops.c b/sys/fs/specfs/spec_vnops.c
index 0267bc1f38ab..5f54f5daa826 100644
--- a/sys/fs/specfs/spec_vnops.c
+++ b/sys/fs/specfs/spec_vnops.c
@@ -522,6 +522,10 @@ spec_specstrategy(ap)
 	} */ *ap;
 {
 
+	KASSERT(ap->a_vp->v_rdev == ap->a_bp->b_dev,
+	    ("%s, dev %s != %s", __func__,
+	    devtoname(ap->a_vp->v_rdev),
+	    devtoname(ap->a_bp->b_dev)));
 	return spec_xstrategy(ap->a_vp, ap->a_bp);
 }