From owner-freebsd-wireless@FreeBSD.ORG Wed Jan 25 21:47:38 2012 Return-Path: Delivered-To: freebsd-wireless@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7FCD11065708 for ; Wed, 25 Jan 2012 21:47:38 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-vw0-f54.google.com (mail-vw0-f54.google.com [209.85.212.54]) by mx1.freebsd.org (Postfix) with ESMTP id 39CC68FC0A for ; Wed, 25 Jan 2012 21:47:38 +0000 (UTC) Received: by mail-vw0-f54.google.com with SMTP id fa15so2750297vbb.13 for ; Wed, 25 Jan 2012 13:47:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=g7SCyQV7OqjT7XB7XLdPkXH1En9ZBTme7PZkdOSDzJ8=; b=RueHxFraakuc8mw8YjHsWot90zue1l43LRAmU8dhLOjS8h8GuBja7kwzbo0rP+LnjI sLQZ6hMiEO+EoLQpcFvAITX4JCaXjCfNrQBb6p4dEuEj/lJYjGfbBCtrqYSy2rIC7jfw ttKvjeUCC2A5A2XHrL7r0P5l8btLlg8WLf8Y4= MIME-Version: 1.0 Received: by 10.52.94.73 with SMTP id da9mr10212181vdb.6.1327528058053; Wed, 25 Jan 2012 13:47:38 -0800 (PST) Sender: adrian.chadd@gmail.com Received: by 10.52.71.241 with HTTP; Wed, 25 Jan 2012 13:47:38 -0800 (PST) In-Reply-To: References: Date: Wed, 25 Jan 2012 13:47:38 -0800 X-Google-Sender-Auth: 5cky8dAInPxCDq1FXQp4TZASgHA Message-ID: From: Adrian Chadd To: PseudoCylon Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-wireless@freebsd.org Subject: Re: net80211 race conditions seen in -HEAD X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussions of 802.11 stack, tools device driver development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Jan 2012 21:47:38 -0000 .. whilst the refcount is 1, so ieee80211_ref_node() may not increment the counter before it's freed by another thread. Adrian