diff --git a/sys/ufs/ufs/ufs_vnops.c b/sys/ufs/ufs/ufs_vnops.c
--- a/sys/ufs/ufs/ufs_vnops.c
+++ b/sys/ufs/ufs/ufs_vnops.c
@@ -562,6 +562,9 @@
 		sb->st_blocks = dbtob((uint64_t)ip->i_din2->di_blocks) / S_BLKSIZE;
 		sb->st_filerev = ip->i_din2->di_modrev;
 	}
+	/* st_rdev is only valid for device nodes */
+	if (vp->v_type != VCHR && vp->v_type != VBLK)
+		sb->st_rdev = 0;
 
 	sb->st_blksize = max(PAGE_SIZE, vp->v_mount->mnt_stat.f_iosize);
 	sb->st_flags = ip->i_flags;