Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750778AbWIMN6b (ORCPT ); Wed, 13 Sep 2006 09:58:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750781AbWIMN6b (ORCPT ); Wed, 13 Sep 2006 09:58:31 -0400 Received: from ogre.sisk.pl ([217.79.144.158]:15823 "EHLO ogre.sisk.pl") by vger.kernel.org with ESMTP id S1750778AbWIMN6a (ORCPT ); Wed, 13 Sep 2006 09:58:30 -0400 From: "Rafael J. Wysocki" To: Andrew Morton Subject: 2.6.18-rc6-mm2: rmmod ohci_hcd oopses on HPC 6325 Date: Wed, 13 Sep 2006 15:58:02 +0200 User-Agent: KMail/1.9.1 Cc: linux-kernel@vger.kernel.org, Alan Stern , USB development list References: <20060912000618.a2e2afc0.akpm@osdl.org> In-Reply-To: <20060912000618.a2e2afc0.akpm@osdl.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200609131558.03391.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4808 Lines: 96 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): 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. I guess it may be related to the suspend issues? - 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/