From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [patch] USB: kaweth.c: use GFP_ATOMIC under spin_lock Date: Fri, 27 Jul 2012 13:46:32 -0700 (PDT) Message-ID: <20120727.134632.76746326614521026.davem@davemloft.net> References: <20120727114651.GA15492@elgon.mountain> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, netdev@vger.kernel.org, kernel-janitors@vger.kernel.org To: dan.carpenter@oracle.com Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:36704 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751329Ab2G0Uqd (ORCPT ); Fri, 27 Jul 2012 16:46:33 -0400 In-Reply-To: <20120727114651.GA15492@elgon.mountain> Sender: netdev-owner@vger.kernel.org List-ID: From: Dan Carpenter Date: Fri, 27 Jul 2012 14:46:51 +0300 > The problem is that we call this with a spin lock held. The call tree > is: > kaweth_start_xmit() holds kaweth->device_lock. > -> kaweth_async_set_rx_mode() > -> kaweth_control() > -> kaweth_internal_control_msg() > > The kaweth_internal_control_msg() function is only called from > kaweth_control() which used GFP_ATOMIC for its allocations. > > Signed-off-by: Dan Carpenter Applied.