Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750707AbWIMQhG (ORCPT ); Wed, 13 Sep 2006 12:37:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750721AbWIMQhF (ORCPT ); Wed, 13 Sep 2006 12:37:05 -0400 Received: from ogre.sisk.pl ([217.79.144.158]:3536 "EHLO ogre.sisk.pl") by vger.kernel.org with ESMTP id S1750707AbWIMQhD (ORCPT ); Wed, 13 Sep 2006 12:37:03 -0400 From: "Rafael J. Wysocki" To: Andrew Morton Subject: Re: 2.6.18-rc6-mm2: rmmod ohci_hcd oopses on HPC 6325 Date: Wed, 13 Sep 2006 18:36:34 +0200 User-Agent: KMail/1.9.1 Cc: linux-kernel@vger.kernel.org, Alan Stern , USB development list References: <20060912000618.a2e2afc0.akpm@osdl.org> <200609131558.03391.rjw@sisk.pl> In-Reply-To: <200609131558.03391.rjw@sisk.pl> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200609131836.34714.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5090 Lines: 101 On Wednesday, 13 September 2006 15:58, Rafael J. Wysocki wrote: > On Tuesday, 12 September 2006 09:06, Andrew Morton wrote: > > > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc6/2.6.18-rc6-mm2/ > > 'rmmod ohci_hcd' causes the following oops to appear on my HPC 6325 every > time (happens also on -rc6-mm1, does not happen on -rc7): So far, I have verified that the problem already happened on -rc5-mm1. Greetings, Rafael > Unable to handle kernel NULL pointer dereference at 0000000000000274 RIP: > [] :ohci_hcd:ohci_hub_status_data+0x25/0x27b > PGD 35ca9067 PUD 369a4067 PMD 0 > Oops: 0000 [1] SMP > last sysfs file: /devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies > CPU 0 > Modules linked in: netconsole cpufreq_ondemand cpufreq_userspace cpufreq_powersa > ve powernow_k8 freq_table button af_packet edd battery snd_pcm_oss snd_mixer_oss > snd_seq snd_seq_device ac ip6t_REJECT xt_tcpudp ipt_REJECT xt_state iptable_man > gle iptable_nat ip_nat iptable_filter ip6table_mangle ip_conntrack nfnetlink ip_ > tables ip6table_filter ip6_tables x_tables ipv6 loop dm_mod usbhid ff_memless hc > i_usb bluetooth snd_hda_intel snd_hda_codec bcm43xx ohci1394 ohci_hcd shpchp pci > _hotplug pcmcia ehci_hcd i2c_piix4 ieee1394 firmware_class ieee80211softmac usbc > ore tg3 sdhci ieee80211 ieee80211_crypt mmc_core ide_cd k8temp yenta_socket rsrc > _nonstatic pcmcia_core i2c_core hwmon snd_pcm snd_timer snd soundcore snd_page_a > lloc cdrom ext3 jbd fan thermal processor atiixp ide_disk ide_core sg > Pid: 3667, comm: rmmod Tainted: G M 2.6.18-rc6-mm2 #19 > RIP: 0010:[] [] :ohci_hcd:ohci_hub_status_d > ata+0x25/0x27b > RSP: 0018:ffffffff805c7e18 EFLAGS: 00010296 > RAX: 0000000000000000 RBX: ffff81003485c508 RCX: 0000000000000000 > RDX: 0000000000000064 RSI: ffffffff805c7e68 RDI: ffff81003485c640 > RBP: ffffffff805c7e58 R08: 0000000000000000 R09: ffff810037438138 > R10: ffffffff80701c40 R11: ffff81003263bc88 R12: ffff81003485c640 > R13: ffffffff805c7e68 R14: ffffc2000003c000 R15: ffff81003485c508 > FS: 00002ba0d06fa6d0(0000) GS:ffffffff8066f000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > CR2: 0000000000000274 CR3: 000000002f153000 CR4: 00000000000006e0 > Process rmmod (pid: 3667, threadinfo ffff81003263a000, task ffff81003697c810) > Stack: ffffffff802813b0 ffffffff805c7e40 ffffffff80281258 ffff81003485c508 > ffff81003485c508 ffff81003485c508 ffffc2000003c000 ffffffff805c7e68 > ffffffff805c7ea8 ffffffff8818e03f 003d09e3f5998950 ffffffff80509860 > Call Trace: > [] :usbcore:usb_hcd_poll_rh_status+0x40/0x13b > [] :ohci_hcd:ohci_irq+0xcb/0x210 > [] :usbcore:usb_hcd_irq+0x2f/0x5f > [] handle_IRQ_event+0x33/0x66 > [] handle_fasteoi_irq+0x9d/0xe3 > [] do_IRQ+0x104/0x11f > [] ret_from_intr+0x0/0xa > DWARF2 unwinder stuck at ret_from_intr+0x0/0xa > > Leftover inexact backtrace: > > [] sysfs_hash_and_remove+0x9/0x137 > [] sysfs_remove_file+0x10/0x12 > [] class_device_remove_file+0x12/0x14 > [] :ohci_hcd:ohci_stop+0xf5/0x17b > [] :usbcore:usb_remove_hcd+0xdc/0x114 > [] klist_release+0x0/0x82 > [] :usbcore:usb_hcd_pci_remove+0x1e/0x7d > [] pci_device_remove+0x25/0x3c > [] __device_release_driver+0x80/0x9c > [] driver_detach+0xac/0xee > [] bus_remove_driver+0x75/0x98 > [] driver_unregister+0x15/0x21 > [] pci_unregister_driver+0x13/0x8e > [] :ohci_hcd:ohci_hcd_pci_cleanup+0x10/0x12 > [] sys_delete_module+0x1b5/0x1e6 > [] system_call+0x7e/0x83 > > > Code: 8a 98 74 02 00 00 e8 d6 3b 03 f8 48 89 45 d0 41 8b 84 24 e4 > RIP [] :ohci_hcd:ohci_hub_status_data+0x25/0x27b > RSP > CR2: 0000000000000274 > <0>Kernel panic - not syncing: Aiee, killing interrupt handler! > > where > > (gdb) l *ohci_hub_status_data+0x25 > 0x4185 is in ohci_hub_status_data (drivers/usb/host/ohci-hub.c:316). > 311 struct ohci_hcd *ohci = hcd_to_ohci (hcd); > 312 int i, changed = 0, length = 1; > 313 int can_suspend; > 314 unsigned long flags; > 315 > 316 can_suspend = device_may_wakeup(&hcd->self.root_hub->dev); > 317 spin_lock_irqsave (&ohci->lock, flags); > 318 > 319 /* handle autosuspended root: finish resuming before > 320 * letting khubd or root hub timer see state changes. - 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/