Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756137AbZGIWLs (ORCPT ); Thu, 9 Jul 2009 18:11:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755492AbZGIWLi (ORCPT ); Thu, 9 Jul 2009 18:11:38 -0400 Received: from iolanthe.rowland.org ([192.131.102.54]:58191 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1755309AbZGIWLg (ORCPT ); Thu, 9 Jul 2009 18:11:36 -0400 Date: Thu, 9 Jul 2009 18:11:34 -0400 (EDT) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: Greg KH cc: Jeremy Fitzhardinge , Tony Cook , Alan Cox , , Linux Kernel Mailing List Subject: Re: 2.6.29.5: Oops when unplugging Moschip 7840/7820 USB serial device In-Reply-To: <20090709214245.GA28377@kroah.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2196 Lines: 42 On Thu, 9 Jul 2009, Greg KH wrote: > On Thu, Jul 09, 2009 at 05:36:30PM -0400, Alan Stern wrote: > > On Thu, 9 Jul 2009, Jeremy Fitzhardinge wrote: > > > > > I unplugged a Moschip 7840/7820 USB serial adapter, and it oopsed. I had been using it > > > with picoterm, but it was not open at the time I unplugged it. > > > > > > Thanks, > > > J > > > > > > BUG: unable to handle kernel NULL pointer dereference at 00000000000000b4 > > > IP: [] __ticket_spin_lock+0x9/0x1a > > > PGD 12e19c067 PUD 12e19d067 PMD 0 > > > Oops: 0002 [#1] SMP > > > last sysfs file: /sys/devices/system/cpu/cpu1/cpufreq/scaling_cur_freq > > > CPU 0 > > > Modules linked in: mos7840 usbserial joydev aes_x86_64 aes_generic hidp fuse ipt_MASQUERADE iptable_nat nf_nat rfcomm bridge stp llc bnep sco l2cap coretemp sunrpc ip6t_REJECT nf_conntrack_ipv6 ip6table_filter ip6_tables ipv6 cpufreq_ondemand acpi_cpufreq freq_table dm_multipath kvm_intel kvm uinput snd_hda_codec_conexant snd_hda_intel snd_hda_codec arc4 ecb snd_hwdep thinkpad_acpi iwlagn usb_storage snd_pcm hwmon btusb e1000e pcspkr iwlcore snd_timer iTCO_wdt lib80211 iTCO_vendor_support mac80211 i2c_i801 wmi snd bluetooth cfg80211 soundcore snd_page_alloc i915 drm i2c_algo_bit i2c_core video output [last unloaded: microcode] > > > Pid: 27, comm: khubd Not tainted 2.6.29.5-191.fc11.x86_64 #1 74542GU > > > RIP: 0010:[] [] __ticket_spin_lock+0x9/0x1a > > > > > Call Trace: > > > [] default_spin_lock_flags+0x9/0xe > > > [] _spin_lock_irqsave+0x32/0x3b > > > [] mos7840_shutdown+0x93/0x120 [mos7840] > > > > The fix for this bug is in 2.6.30.1, but it hasn't been added to the > > 2.6.29.stable tree (or 2.6.27.stable). > > .29 is no longer being maintained. > > I didn't think the change was needed for .27, is it? No -- I forgot for a moment where the dividing line was. Alan Stern -- 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/