From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from static-ip-62-75-166-246.inaddr.intergenia.de ([62.75.166.246]:49159 "EHLO vs166246.vserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751287AbXHHKir (ORCPT ); Wed, 8 Aug 2007 06:38:47 -0400 From: Michael Buesch To: bcm43xx-dev@lists.berlios.de Subject: Re: [PATCH] Fix handling of failure to create debugfs directory Date: Wed, 8 Aug 2007 12:38:02 +0200 Cc: Larry Finger , Pavel Roskin , linux-wireless@vger.kernel.org References: <20070808051710.3902.43211.stgit@dv.roinet.com> <46B95A15.1080202@lwfinger.net> In-Reply-To: <46B95A15.1080202@lwfinger.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Message-Id: <200708081238.03216.mb@bu3sch.de> Sender: linux-wireless-owner@vger.kernel.org List-ID: On Wednesday 08 August 2007 07:52:21 Larry Finger wrote: > Pavel Roskin wrote: > > This can happen if CONFIG_BCM43XX_MAC80211_DEBUG is enabled, but > > CONFIG_DEBUG_FS is not. > > > > Signed-off-by: Pavel Roskin > > --- > > > With this patch installed, and the DEBUG configuration set as above, I get a kernel panic on an > x86_64 SMP system. The reason for the panic scrolled off the screen, but the complete stack dump > (hand copied) is as follows: > > lock_acquire+0x85/0x31 > bcm43xx_mac80211: bcm43xx_debugfs_log_txstat+0x5a/099 > _spin_lock+0x25/0x31 > bcm43xx_mac80211: bcm43xx_interrupt_tasklet+0x21/0x723 > bcm43xx_mac80211: bcm43xx_debugfs_log_txstat+0x5a/0x99 > bcm43xx_mac80211: bcm43xx_handle_txstatsus+0x12/0x72 > bcm43xx_mac80211: bcm43xx_interrupt_tasklet+0x699/0x723 > __lock_acquire+0xca2/0xcf0 > bcm43xx_mac80211: bcm43xx_interrupt_handler+0x296/0x723 > tasklet_action+0x5e/0xb2 > __do_softirq+0x5f/0xe3 > call_softirq+0x1c/0x28 > do_softirq+0x39/0x9f > irq_exit+0x4e/0x50 > do_IRQ+0xba/0xd8 > default_idle+0x35/0x51 > cpu_idle+0xce/0xf1 > start_secondary+0x2e0/0x2f2 Ah crap. I missed this. I'll do a patch. But first some lunch :) -- Greetings Michael.