Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757403AbZJHKnm (ORCPT ); Thu, 8 Oct 2009 06:43:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757345AbZJHKnl (ORCPT ); Thu, 8 Oct 2009 06:43:41 -0400 Received: from smtp.ispras.ru ([83.149.198.201]:48674 "EHLO smtp.ispras.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756606AbZJHKnj (ORCPT ); Thu, 8 Oct 2009 06:43:39 -0400 From: Alexander Strakh Organization: ISP RAS To: Benjamin Kong , Samuel Ortiz , rda-users@lists.sourceforge.net, Linux Kernlel Mailing List Subject: Re: [BUG] ali-ircc.c sleeping function called from invalid context Date: Thu, 8 Oct 2009 14:45:40 +0000 User-Agent: KMail/1.10.3 (Linux/2.6.27.29-0.1-default; KDE/4.1.3; x86_64; ; ) MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200910081445.43125.strakh@ispras.ru> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1076 Lines: 31 KERNEL_VERSION: 2.6.31 DESCRIBE: (wrong message before that) Driver reports/drivers/net/irda/ali-ircc.c - get spin_lock twice drivers/net/irda/ali-ircc.c: 2028static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) ... 2056 ? ? ? ? ? ? ? ?spin_lock_irqsave(&self->lock, flags); 2057 ? ? ? ? ? ? ? ?ali_ircc_change_speed(self, irq->ifr_baudrate); ? ? ? ? ... Path to second spin_lock_irqsave(&self->lock, flags) from ali_ircc_change_speed: 1. ali_ircc_change_speed calls ali_ircc_sir_change_speed ./drivers/net/irda/ali-ircc.c:999 2. ali_ircc_sir_change_speed calls spin_lock_irqsave at ./drivers/net/irda/ali-ircc.c:1084: 1050static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed) 1084 spin_lock_irqsave(&self->lock, flags); Found by: Linux Driver Verification -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/