From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932067AbVHWMwG (ORCPT ); Tue, 23 Aug 2005 08:52:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932154AbVHWMwG (ORCPT ); Tue, 23 Aug 2005 08:52:06 -0400 Received: from anf141.internetdsl.tpnet.pl ([83.17.87.141]:57480 "EHLO ogre.sisk.pl") by vger.kernel.org with ESMTP id S932067AbVHWMwE (ORCPT ); Tue, 23 Aug 2005 08:52:04 -0400 From: "Rafael J. Wysocki" To: Andrew Morton Subject: Re: 2.6.13-rc6-mm2 (hangs on non-SMP x86-64 and oopses) Date: Tue, 23 Aug 2005 14:51:51 +0200 User-Agent: KMail/1.8.2 Cc: linux-kernel@vger.kernel.org, Ralf Baechle , Greg KH References: <20050822213021.1beda4d5.akpm@osdl.org> In-Reply-To: <20050822213021.1beda4d5.akpm@osdl.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200508231451.52521.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tuesday, 23 of August 2005 06:30, Andrew Morton wrote: > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.13-rc6/2.6.13-rc6-mm2/ > > - Various updates. Nothing terribly noteworthy. It hangs solig during boot (after starting kjournald) on Asus L5D (non-SMP x86-64), which is caused by this patch: 8250-serial-console-locking-bug-spelling-fix.patch (from binary search). If this patch is reverted, it oopses like in the following trace. At the same time it works fine on an SMP box (dual-core Athlon 64). Greetings, Rafael ACPI: PCI Interrupt Link [LUS2] enabled at IRQ 5 PCI: setting IRQ 5 as level-triggered ACPI: PCI Interrupt 0000:00:02.2[C] -> Link [LUS2] -> GSI 5 (level, low) -> IRQ 5 PCI: Setting latency timer of device 0000:00:02.2 to 64 ehci_hcd 0000:00:02.2: EHCI Host Controller ehci_hcd 0000:00:02.2: debug port 1 ehci_hcd 0000:00:02.2: new USB bus registered, assigned bus number 3 ehci_hcd 0000:00:02.2: irq 5, io mem 0xfebfdc00 PCI: cache line size of 64 is not supported by device 0000:00:02.2 ehci_hcd 0000:00:02.2: park 0 ehci_hcd 0000:00:02.2: USB 2.0 initialized, EHCI 1.00, driver 10 Dec 2004 hub 3-0:1.0: USB hub found usb 2-2: string descriptor 0 read error: -110 hub 3-0:1.0: 6 ports detected usb 2-2: string descriptor 0 read error: -110 usb 2-2: can't set config #1, error -110 Unable to handle kernel NULL pointer dereference at 0000000000000004 RIP: {_raw_spin_lock+27} PGD 2ca73067 PUD 2ca46067 PMD 0 Oops: 0000 [1] PREEMPT CPU 0 Modules linked in: ehci_hcd ohci_hcd sk98lin evdev joydev sg st sr_mod sd_mod scsi_mod ide_cd cdrom dm_mod parport_pc lp parport Pid: 108, comm: khubd Not tainted 2.6.13-rc6-mm2 RIP: 0010:[] {_raw_spin_lock+27} RSP: 0000:ffff81002fc7dcc8 EFLAGS: 00010282 RAX: ffff810001ce20d0 RBX: 0000000000000000 RCX: ffff81002d586530 RDX: 0000000000000000 RSI: ffff81002d586540 RDI: 0000000000000000 RBP: ffff81002fc7dce8 R08: 0000000000000000 R09: ffff81002d586410 R10: 00000000ffffffff R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff803f06a0 R14: ffff81002d5557f8 R15: 0000000000000002 FS: 00002aaaab28fe80(0000) GS:ffffffff804f8840(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000004 CR3: 000000002ca61000 CR4: 00000000000006e0 Process khubd (pid: 108, threadinfo ffff81002fc7c000, task ffff810001ce20d0) Stack: 0000000000000000 0000000000000000 ffffffff803f06a0 ffff81002d5557f8 ffff81002fc7dd08 ffffffff8035612e ffff81002d555918 ffff81002d555870 ffff81002fc7dd28 ffffffff80353b2f Call Trace:{_spin_lock+30} {klist_remove+31} {__device_release_driver+93} {device_release_driver+52} {bus_remove_device+180} {device_del+56} {usb_new_device+495} {hub_thread+1961} {thread_return+187} {autoremove_wake_function+0} {autoremove_wake_function+0} {hub_thread+0} {kthread+211} {child_rip+8} {kthread+0} {child_rip+0} BUG: spinlock trylock failure on UP on CPU#0, khubd/108 lock: ffffffff803bf020, .magic: dead4ead, .owner: khubd/108, .owner_cpu: 0 Call Trace:{add_preempt_count+105} {spin_bug+211} {show_trace+571} {_raw_spin_trylock+62} {_spin_trylock+30} {oops_begin+17} {do_page_fault+1722} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {_spin_unlock_irq+20} {thread_return+187} {error_exit+0} {_raw_spin_lock+27} {add_preempt_count+105} {_spin_lock+30} {klist_remove+31} {__device_release_driver+93} {device_release_driver+52} {bus_remove_device+180} {device_del+56} {usb_new_device+495} {hub_thread+1961} {thread_return+187} {autoremove_wake_function+0} {autoremove_wake_function+0} {hub_thread+0} {kthread+211} {child_rip+8} {kthread+0} {child_rip+0} --------------------------- | preempt count: 00000003 ] | 3 level deep critical section nesting: ---------------------------------------- .. [] .... _spin_lock+0x16/0x30 .....[] .. ( <= klist_remove+0x1f/0x50) .. [] .... _spin_trylock+0x16/0x60 .....[] .. ( <= oops_begin+0x11/0x60) .. [] .... _spin_trylock+0x16/0x60 .....[] .. ( <= oops_begin+0x11/0x60) Unable to handle kernel NULL pointer dereference at 0000000000000008 RIP: {show_trace+571} PGD 2ca73067 PUD 2ca46067 PMD 0 Oops: 0000 [2] PREEMPT CPU 0 Modules linked in: ehci_hcd ohci_hcd sk98lin evdev joydev sg st sr_mod sd_mod scsi_mod ide_cd cdrom dm_mod parport_pc lp parport Pid: 108, comm: khubd Not tainted 2.6.13-rc6-mm2 RIP: 0010:[] {show_trace+571} RSP: 0000:ffff81002fc7da08 EFLAGS: 00010096 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000096 RDI: 0000000000000001 RBP: ffff81002fc7da48 R08: 0000000000000000 R09: ffff81002d558c50 R10: 00000000ffffffff R11: 0000000000000000 R12: ffff81002fc7e000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff80469fc0 FS: 00002aaaab28fe80(0000) GS:ffffffff804f8840(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000008 CR3: 000000002ca61000 CR4: 00000000000006e0 Process khubd (pid: 108, threadinfo ffff81002fc7c000, task ffff810001ce20d0) Stack: 0000000000000000 0000000000000096 000000002fc7da48 ffff81002fc7dd18 000000000000000a ffffffff80469fc0 ffffffff80465fc0 0000000000000000 ffff81002fc7da88 ffffffff80110168 Call Trace:{show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {_spin_unlock_irq+20} {thread_return+187} {error_exit+0} {_raw_spin_lock+27} {add_preempt_count+105} {_spin_lock+30} {klist_remove+31} {__device_release_driver+93} {device_release_driver+52} {bus_remove_device+180} {device_del+56} {usb_new_device+495} {hub_thread+1961} {thread_return+187} {autoremove_wake_function+0} {autoremove_wake_function+0} {hub_thread+0} {kthread+211} {child_rip+8} {kthread+0} {child_rip+0} Unable to handle kernel NULL pointer dereference at 0000000000000008 RIP: {show_trace+571} PGD 2ca73067 PUD 2ca46067 PMD 0 Oops: 0000 [3] PREEMPT CPU 0 Modules linked in: ehci_hcd ohci_hcd sk98lin evdev joydev sg st sr_mod sd_mod scsi_mod ide_cd cdrom dm_mod parport_pc lp parport Pid: 108, comm: khubd Not tainted 2.6.13-rc6-mm2 RIP: 0010:[] {show_trace+571} RSP: 0000:ffff81002fc7d748 EFLAGS: 00010096 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000092 RDI: 0000000000000001 RBP: ffff81002fc7d788 R08: 0000000000000000 R09: ffff81002d558c50 R10: 00000000ffffffff R11: 0000000000000000 R12: ffff81002fc7e000 R13: 0000000000000000 R14: 0000000000000020 R15: ffffffff80469fc0 FS: 00002aaaab28fe80(0000) GS:ffffffff804f8840(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000008 CR3: 000000002ca61000 CR4: 00000000000006e0 Process khubd (pid: 108, threadinfo ffff81002fc7c000, task ffff810001ce20d0) Stack: 0000000000000000 0000000000000096 000000002fc7d788 ffff81002fc7da58 000000000000000a ffffffff80469fc0 ffffffff80465fc0 0000000000000000 ffff81002fc7d7c8 ffffffff80110168 Call Trace:{show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {_spin_unlock_irq+20} {thread_return+187} {error_exit+0} {_raw_spin_lock+27} {add_preempt_count+105} {_spin_lock+30} {klist_remove+31} {__device_release_driver+93} {device_release_driver+52} {bus_remove_device+180} {device_del+56} {usb_new_device+495} {hub_thread+1961} {thread_return+187} {autoremove_wake_function+0} {autoremove_wake_function+0} {hub_thread+0} {kthread+211} {child_rip+8} {kthread+0} {child_rip+0} Unable to handle kernel NULL pointer dereference at 0000000000000008 RIP: {show_trace+571} PGD 2ca73067 PUD 2ca46067 PMD 0 Oops: 0000 [4] PREEMPT CPU 0 Modules linked in: ehci_hcd ohci_hcd sk98lin evdev joydev sg st sr_mod sd_mod scsi_mod ide_cd cdrom dm_mod parport_pc lp parport Pid: 108, comm: khubd Not tainted 2.6.13-rc6-mm2 RIP: 0010:[] {show_trace+571} RSP: 0000:ffff81002fc7d488 EFLAGS: 00010092 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000092 RDI: 0000000000000001 RBP: ffff81002fc7d4c8 R08: 0000000000000000 R09: ffff81002d558c50 R10: 00000000ffffffff R11: 0000000000000000 R12: ffff81002fc7e000 R13: 0000000000000000 R14: 0000000000000020 R15: ffffffff80469fc0 FS: 00002aaaab28fe80(0000) GS:ffffffff804f8840(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000008 CR3: 000000002ca61000 CR4: 00000000000006e0 Process khubd (pid: 108, threadinfo ffff81002fc7c000, task ffff810001ce20d0) Stack: 0000000000000000 0000000000000092 000000002fc7d4c8 ffff81002fc7d798 000000000000000a ffffffff80469fc0 ffffffff80465fc0 0000000000000000 ffff81002fc7d508 ffffffff80110168 Call Trace:{show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {_spin_unlock_irq+20} {thread_return+187} {error_exit+0} {_raw_spin_lock+27} {add_preempt_count+105} {_spin_lock+30} {klist_remove+31} {__device_release_driver+93} {device_release_driver+52} {bus_remove_device+180} {device_del+56} {usb_new_device+495} {hub_thread+1961} {thread_return+187} {autoremove_wake_function+0} {autoremove_wake_function+0} {hub_thread+0} {kthread+211} {child_rip+8} {kthread+0} {child_rip+0} Unable to handle kernel NULL pointer dereference at 0000000000000008 RIP: {show_trace+571} PGD 2ca73067 PUD 2ca46067 PMD 0 Oops: 0000 [5] PREEMPT CPU 0 Modules linked in: ehci_hcd ohci_hcd sk98lin evdev joydev sg st sr_mod sd_mod scsi_mod ide_cd cdrom dm_mod parport_pc lp parport Pid: 108, comm: khubd Not tainted 2.6.13-rc6-mm2 RIP: 0010:[] {show_trace+571} RSP: 0000:ffff81002fc7d1c8 EFLAGS: 00010092 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000096 RDI: 0000000000000001 RBP: ffff81002fc7d208 R08: 0000000000000000 R09: ffff81002d558c50 R10: 00000000ffffffff R11: 0000000000000000 R12: ffff81002fc7e000 R13: 0000000000000000 R14: 0000000000000020 R15: ffffffff80469fc0 FS: 00002aaaab28fe80(0000) GS:ffffffff804f8840(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000008 CR3: 000000002ca61000 CR4: 00000000000006e0 Process khubd (pid: 108, threadinfo ffff81002fc7c000, task ffff810001ce20d0) Stack: 0000000000000000 0000000000000092 000000002fc7d208 ffff81002fc7d4d8 000000000000000a ffffffff80469fc0 ffffffff80465fc0 0000000000000000 ffff81002fc7d248 ffffffff80110168 Call Trace:{show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {_spin_unlock_irq+20} {thread_return+187} {error_exit+0} {_raw_spin_lock+27} {add_preempt_count+105} {_spin_lock+30} {klist_remove+31} {__device_release_driver+93} {device_release_driver+52} {bus_remove_device+180} {device_del+56} {usb_new_device+495} {hub_thread+1961} {thread_return+187} {autoremove_wake_function+0} {autoremove_wake_function+0} {hub_thread+0} {kthread+211} {child_rip+8} {kthread+0} {child_rip+0} Unable to handle kernel NULL pointer dereference at 0000000000000008 RIP: {show_trace+571} PGD 2ca73067 PUD 2ca46067 PMD 0 Oops: 0000 [6] PREEMPT CPU 0 Modules linked in: ehci_hcd ohci_hcd sk98lin evdev joydev sg st sr_mod sd_mod scsi_mod ide_cd cdrom dm_mod parport_pc lp parport Pid: 108, comm: khubd Not tainted 2.6.13-rc6-mm2 RIP: 0010:[] {show_trace+571} RSP: 0000:ffff81002fc7cf08 EFLAGS: 00010096 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000096 RDI: 0000000000000001 RBP: ffff81002fc7cf48 R08: 0000000000000000 R09: ffff81002d558c50 R10: 00000000ffffffff R11: 0000000000000000 R12: ffff81002fc7e000 R13: 0000000000000000 R14: 0000000000000020 R15: ffffffff80469fc0 FS: 00002aaaab28fe80(0000) GS:ffffffff804f8840(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000008 CR3: 000000002ca61000 CR4: 00000000000006e0 Process khubd (pid: 108, threadinfo ffff81002fc7c000, task ffff810001ce20d0) Stack: 0000000000000000 0000000000000096 000000002fc7cf48 ffff81002fc7d218 000000000000000a ffffffff80469fc0 ffffffff80465fc0 0000000000000000 ffff81002fc7cf88 ffffffff80110168 Call Trace:{show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {_spin_unlock_irq+20} {thread_return+187} {error_exit+0} {_raw_spin_lock+27} {add_preempt_count+105} {_spin_lock+30} {klist_remove+31} {__device_release_driver+93} {device_release_driver+52} {bus_remove_device+180} {device_del+56} {usb_new_device+495} {hub_thread+1961} {thread_return+187} {autoremove_wake_function+0} {autoremove_wake_function+0} {hub_thread+0} {kthread+211} {child_rip+8} {kthread+0} {child_rip+0} Unable to handle kernel NULL pointer dereference at 0000000000000008 RIP: {show_trace+571} PGD 2ca73067 PUD 2ca46067 PMD 0 Oops: 0000 [7] PREEMPT CPU 0 Modules linked in: ehci_hcd ohci_hcd sk98lin evdev joydev sg st sr_mod sd_mod scsi_mod ide_cd cdrom dm_mod parport_pc lp parport Pid: 108, comm: khubd Not tainted 2.6.13-rc6-mm2 RIP: 0010:[] {show_trace+571} RSP: 0000:ffff81002fc7cc48 EFLAGS: 00010096 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000092 RDI: 0000000000000001 RBP: ffff81002fc7cc88 R08: 0000000000000000 R09: ffff81002d558c50 R10: 00000000ffffffff R11: 0000000000000000 R12: ffff81002fc7e000 R13: 0000000000000000 R14: 0000000000000020 R15: ffffffff80469fc0 FS: 00002aaaab28fe80(0000) GS:ffffffff804f8840(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000008 CR3: 000000002ca61000 CR4: 00000000000006e0 Process khubd (pid: 108, threadinfo ffff81002fc7c000, task ffff810001ce20d0) Stack: 0000000000000000 0000000000000096 000000002fc7cc88 ffff81002fc7cf58 000000000000000a ffffffff80469fc0 ffffffff80465fc0 0000000000000000 ffff81002fc7ccc8 ffffffff80110168 Call Trace:{show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {_spin_unlock_irq+20} {thread_return+187} {error_exit+0} {_raw_spin_lock+27} {add_preempt_count+105} {_spin_lock+30} {klist_remove+31} {__device_release_driver+93} {device_release_driver+52} {bus_remove_device+180} {device_del+56} {usb_new_device+495} {hub_thread+1961} {thread_return+187} {autoremove_wake_function+0} {autoremove_wake_function+0} {hub_thread+0} {kthread+211} {child_rip+8} {kthread+0} {child_rip+0} Unable to handle kernel NULL pointer dereference at 0000000000000008 RIP: {show_trace+571} PGD 2ca73067 PUD 2ca46067 PMD 0 Oops: 0000 [8] PREEMPT CPU 0 Modules linked in: ehci_hcd ohci_hcd sk98lin evdev joydev sg st sr_mod sd_mod scsi_mod ide_cd cdrom dm_mod parport_pc lp parport Pid: 108, comm: khubd Not tainted 2.6.13-rc6-mm2 RIP: 0010:[] {show_trace+571} RSP: 0000:ffff81002fc7c988 EFLAGS: 00010092 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000092 RDI: 0000000000000001 RBP: ffff81002fc7c9c8 R08: 0000000000000000 R09: ffff81002d558c50 R10: 00000000ffffffff R11: 0000000000000000 R12: ffff81002fc7e000 R13: 0000000000000000 R14: 0000000000000020 R15: ffffffff80469fc0 FS: 00002aaaab28fe80(0000) GS:ffffffff804f8840(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000008 CR3: 000000002ca61000 CR4: 00000000000006e0 Process khubd (pid: 108, threadinfo ffff81002fc7c000, task ffff810001ce20d0) Stack: 0000000000000000 0000000000000092 000000002fc7c9c8 ffff81002fc7cc98 000000000000000a ffffffff80469fc0 ffffffff80465fc0 0000000000000000 ffff81002fc7ca08 ffffffff80110168 Call Trace:{show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {vprintk+830} {vprintk+830} {kallsyms_lookup+246} {error_exit+0} {show_trace+571} {show_trace+567} {show_stack+216} {show_registers+135} {__die+142} {do_page_fault+1832} {_spin_unlock_irq+20} {thread_return+187} {error_exit+0} {_raw_spin_lock+27} {add_preempt_count+105} {_spin_lock+30} {klist_remove+31} {__device_release_driver+93} {device_release_driver+52} {bus_remove_device+180} {device_del+56} {usb_new_device+495} {hub_thread+1961} {thread_return+187} {autoremove_wake_function+0} {autoremove_wake_function+0} {hub_thread+0} {kthread+211} {child_rip+8} {kthread+0} {child_rip+0} Unable to handle kernel NULL pointer dereference at 0000000000000008 RIP: {show_trace+571}----------- [cut here ] --------- [please bite here ] --------- Kernel BUG at "lib/preempt.c":64 invalid operand: 0000 [9] PREEMPT CPU 0 Modules linked in: ehci_hcd ohci_hcd sk98lin evdev joydev sg st sr_mod sd_mod scsi_mod ide_cd cdrom dm_mod parport_pc lp parport Pid: 108, comm: khubd Not tainted 2.6.13-rc6-mm2 RIP: 0010:[] {sub_preempt_count+23} RSP: 0000:ffff81002fc7c298 EFLAGS: 00010002 RAX: 0000000000000000 RBX: ffff81002fc7c368 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000092 RDI: 0000000000000001 RBP: ffff81002fc7c298 R08: 0000000000000000 R09: ffff81002d558c50 R10: 00000000ffffffff R11: 0000000000000000 R12: ffffffff8036fe93 R13: ffffffff8047cb62 R14: 0000000000000008 R15: 0000000000000022 FS: 00002aaaab28fe80(0000) GS:ffffffff804f8840(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b -- - Would you tell me, please, which way I ought to go from here? - That depends a good deal on where you want to get to. -- Lewis Carroll "Alice's Adventures in Wonderland"