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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Re: pv_ops dom0 kernel vga text console line offset problem
On Sun, Jan 24, 2010 at 06:12:19PM +0200, Pasi Kärkkäinen wrote: > On Tue, Dec 15, 2009 at 11:08:16AM -0800, Jeremy Fitzhardinge wrote: > > On 12/13/2009 08:31 AM, Pasi Kärkkäinen wrote: > >> My newer x86_64 testbox shows a problem with vga text console, basicly > >> when drm is initialized (without modesetting, kernel has "nomodeset" > >> parameter), > >> all the text gets some offset, ie. the text doesn't start from the > >> beginning of the line, but from the middle of the screen. > >> > >> This happens with pv_ops dom0 kernel, using Xen 3.4.x hypervisor. The > >> same kernel binary works OK without problems on baremetal (without Xen). > >> > >> I recorded a video of this behaviour, it's easiest to check it out: > >> http://pasik.reaktio.net/xen/pv_ops-dom0-debug/xen_pvops_dom0_vga_console_line_offset_problem-xvid.avi > >> > >> Any ideas? > >> > >> Hardware is Supermicro Intel motherboard with ATI ES1000 graphics. > >> > > > > Yes, that's very odd. Are you using any ATI-specific drivers, or is > > this being used as plain generic VGA hardware? You have radeon drm; > > what happens if you disable that? > > > > I just hacked the initrd image to not load radeon/drm/ttm modules, > and also blacklisted them in modprobe.d so that udev can't load them. > > And the offset-problem still happens.. It looks like it happens when > USB modules are loaded.. ? > > (I verified after the system started that no radeon/drm/ttm modules were > loaded). > Ok, it seems this problem also happens when running RHEL5 kernel-xen, which is 2.6.18 based. So this text offset problem is NOT pv_ops related. I think it's something to do with this specific system and Xen. > > I guess there's some register state which isn't being either set up > > properly, or read back properly, so the kernel driver is out of sync > > with the actual hardware state. But I'm not sure where I'd start > > looking for the problem. > > > > Hmm.. I wonder if it's actually related to the other USB problem I have: > http://pasik.reaktio.net/xen/pv_ops-dom0-debug/dmesg-2.6.31.6-vga-text-console-line-offset-problem2.txt > So this USB issue is a separate problem. Recently there has been a couple of other reports from different users about this USB issue. -- Pasi > usb 1-5: new high speed USB device using ehci_hcd and address 2 > > ====================================================== > [ INFO: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected ] > 2.6.31.6 #8 > ------------------------------------------------------ > khubd/42 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: > (&retval->lock){......}, at: [<ffffffff811298c4>] dma_pool_alloc+0x45/0x321 > > and this task is already holding: > (&ehci->lock){-.....}, at: [<ffffffff813db662>] ehci_urb_enqueue+0xb4/0xd7a > which would create a new lock dependency: > (&ehci->lock){-.....} -> (&retval->lock){......} > > but this new dependency connects a HARDIRQ-irq-safe lock: > (&ehci->lock){-.....} > ... which became HARDIRQ-irq-safe at: > [<ffffffff81099a1d>] __lock_acquire+0x254/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff815138f7>] _spin_lock+0x45/0x8e > [<ffffffff813da270>] ehci_irq+0x41/0x441 > [<ffffffff813beef6>] usb_hcd_irq+0x59/0xcc > [<ffffffff810c8834>] handle_IRQ_event+0x62/0x148 > [<ffffffff810cadc7>] handle_level_irq+0x90/0xf9 > [<ffffffff81018014>] handle_irq+0x9a/0xba > [<ffffffff8130a929>] xen_evtchn_do_upcall+0x10c/0x1bd > [<ffffffff810162fe>] xen_do_hypervisor_callback+0x1e/0x30 > [<ffffffffffffffff>] 0xffffffffffffffff > > to a HARDIRQ-irq-unsafe lock: > (purge_lock){+.+...} > ... which became HARDIRQ-irq-unsafe at: > ... [<ffffffff81099a91>] __lock_acquire+0x2c8/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff815138f7>] _spin_lock+0x45/0x8e > [<ffffffff811229b4>] __purge_vmap_area_lazy+0x63/0x198 > [<ffffffff81124280>] vm_unmap_aliases+0x18f/0x1b2 > [<ffffffff8100e594>] xen_alloc_ptpage+0x47/0x75 > [<ffffffff8100e5ff>] xen_alloc_pte+0x13/0x15 > [<ffffffff81117bdb>] __pte_alloc_kernel+0x6f/0xdd > [<ffffffff811237ad>] vmap_page_range_noflush+0x1c5/0x315 > [<ffffffff8112393e>] map_vm_area+0x41/0x6b > [<ffffffff81123a97>] __vmalloc_area_node+0x12f/0x167 > [<ffffffff81123b5f>] __vmalloc_node+0x90/0xb5 > [<ffffffff81123dd6>] __vmalloc+0x28/0x3e > [<ffffffff81a2db10>] alloc_large_system_hash+0x12c/0x1f8 > [<ffffffff81a30190>] vfs_caches_init+0xb8/0x140 > [<ffffffff81a08629>] start_kernel+0x3ef/0x44c > [<ffffffff81a07930>] x86_64_start_reservations+0xbb/0xd6 > [<ffffffff81a0be20>] xen_start_kernel+0x5dc/0x5e3 > [<ffffffffffffffff>] 0xffffffffffffffff > > other info that might help us debug this: > > 2 locks held by khubd/42: > #0: (usb_address0_mutex){+.+...}, at: [<ffffffff813b9f1f>] > hub_port_init+0x8c/0x7ec > #1: (&ehci->lock){-.....}, at: [<ffffffff813db662>] > ehci_urb_enqueue+0xb4/0xd7a > > the HARDIRQ-irq-safe lock's dependencies: > -> (&ehci->lock){-.....} ops: 0 { > IN-HARDIRQ-W at: > [<ffffffff81099a1d>] __lock_acquire+0x254/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff815138f7>] _spin_lock+0x45/0x8e > [<ffffffff813da270>] ehci_irq+0x41/0x441 > [<ffffffff813beef6>] usb_hcd_irq+0x59/0xcc > [<ffffffff810c8834>] handle_IRQ_event+0x62/0x148 > [<ffffffff810cadc7>] handle_level_irq+0x90/0xf9 > [<ffffffff81018014>] handle_irq+0x9a/0xba > [<ffffffff8130a929>] xen_evtchn_do_upcall+0x10c/0x1bd > [<ffffffff810162fe>] > xen_do_hypervisor_callback+0x1e/0x30 > [<ffffffffffffffff>] 0xffffffffffffffff > INITIAL USE at: > [<ffffffff81099b08>] __lock_acquire+0x33f/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff81513aca>] _spin_lock_irqsave+0x5d/0xab > [<ffffffff813d8e35>] ehci_endpoint_reset+0x5a/0x12b > [<ffffffff813be299>] usb_hcd_reset_endpoint+0x35/0x84 > [<ffffffff813c22d5>] usb_enable_endpoint+0x52/0xa6 > [<ffffffff813c2374>] usb_enable_interface+0x4b/0x74 > [<ffffffff813c44b1>] usb_set_configuration+0x479/0x6af > [<ffffffff813ce7d1>] generic_probe+0x6c/0xcb > [<ffffffff813c5102>] usb_probe_device+0x6c/0xb4 > [<ffffffff8135f5b3>] driver_probe_device+0xed/0x22a > [<ffffffff8135f7e3>] __device_attach+0x4d/0x68 > [<ffffffff8135e40d>] bus_for_each_drv+0x68/0xb3 > [<ffffffff8135f8c5>] device_attach+0x75/0xa0 > [<ffffffff8135e1d1>] bus_probe_device+0x3a/0x65 > [<ffffffff8135c0bd>] device_add+0x3db/0x586 > [<ffffffff813bb91e>] usb_new_device+0x169/0x232 > [<ffffffff813c01b4>] usb_add_hcd+0x4be/0x6a8 > [<ffffffff813cfe2a>] usb_hcd_pci_probe+0x263/0x3bd > [<ffffffff8129601f>] local_pci_probe+0x2a/0x42 > [<ffffffff8107e88f>] do_work_for_cpu+0x27/0x50 > [<ffffffff81083bcc>] kthread+0xac/0xb4 > [<ffffffff810161aa>] child_rip+0xa/0x20 > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff82674fe8>] __key.35644+0x0/0x8 > -> (hcd_urb_list_lock){......} ops: 0 { > INITIAL USE at: > [<ffffffff81099b08>] __lock_acquire+0x33f/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff815138f7>] _spin_lock+0x45/0x8e > [<ffffffff813bf2a0>] usb_hcd_link_urb_to_ep+0x37/0xc8 > [<ffffffff813c0a11>] usb_hcd_submit_urb+0x308/0xa03 > [<ffffffff813c17e1>] usb_submit_urb+0x258/0x2eb > [<ffffffff813c3145>] usb_start_wait_urb+0x71/0x1d4 > [<ffffffff813c3543>] usb_control_msg+0x10c/0x144 > [<ffffffff813c4812>] usb_get_descriptor+0x83/0xc9 > [<ffffffff813c48dd>] > usb_get_device_descriptor+0x85/0xc8 > [<ffffffff813c0168>] usb_add_hcd+0x472/0x6a8 > [<ffffffff813cfe2a>] usb_hcd_pci_probe+0x263/0x3bd > [<ffffffff8129601f>] local_pci_probe+0x2a/0x42 > [<ffffffff8107e88f>] do_work_for_cpu+0x27/0x50 > [<ffffffff81083bcc>] kthread+0xac/0xb4 > [<ffffffff810161aa>] child_rip+0xa/0x20 > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff817edc38>] hcd_urb_list_lock+0x18/0x40 > ... acquired at: > [<ffffffff8109a242>] __lock_acquire+0xa79/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff815138f7>] _spin_lock+0x45/0x8e > [<ffffffff813bf2a0>] usb_hcd_link_urb_to_ep+0x37/0xc8 > [<ffffffff813db67b>] ehci_urb_enqueue+0xcd/0xd7a > [<ffffffff813c0f76>] usb_hcd_submit_urb+0x86d/0xa03 > [<ffffffff813c17e1>] usb_submit_urb+0x258/0x2eb > [<ffffffff813c3145>] usb_start_wait_urb+0x71/0x1d4 > [<ffffffff813c3543>] usb_control_msg+0x10c/0x144 > [<ffffffff813ba1ac>] hub_port_init+0x319/0x7ec > [<ffffffff813bd7f9>] hub_events+0x94d/0x11e6 > [<ffffffff813be0d8>] hub_thread+0x46/0x1d2 > [<ffffffff81083bcc>] kthread+0xac/0xb4 > [<ffffffff810161aa>] child_rip+0xa/0x20 > [<ffffffffffffffff>] 0xffffffffffffffff > > > the HARDIRQ-irq-unsafe lock's dependencies: > -> (purge_lock){+.+...} ops: 0 { > HARDIRQ-ON-W at: > [<ffffffff81099a91>] __lock_acquire+0x2c8/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff815138f7>] _spin_lock+0x45/0x8e > [<ffffffff811229b4>] __purge_vmap_area_lazy+0x63/0x198 > [<ffffffff81124280>] vm_unmap_aliases+0x18f/0x1b2 > [<ffffffff8100e594>] xen_alloc_ptpage+0x47/0x75 > [<ffffffff8100e5ff>] xen_alloc_pte+0x13/0x15 > [<ffffffff81117bdb>] __pte_alloc_kernel+0x6f/0xdd > [<ffffffff811237ad>] > vmap_page_range_noflush+0x1c5/0x315 > [<ffffffff8112393e>] map_vm_area+0x41/0x6b > [<ffffffff81123a97>] __vmalloc_area_node+0x12f/0x167 > [<ffffffff81123b5f>] __vmalloc_node+0x90/0xb5 > [<ffffffff81123dd6>] __vmalloc+0x28/0x3e > [<ffffffff81a2db10>] > alloc_large_system_hash+0x12c/0x1f8 > [<ffffffff81a30190>] vfs_caches_init+0xb8/0x140 > <ffffffff81123dd6>] __vmalloc+0x28/0x3e > [<ffffffff81a2db10>] > alloc_large_system_hash+0x12c/0x1f8 > [<ffffffff81a30190>] vfs_caches_init+0xb8/0x140 > [<ffffffff81a08629>] start_kernel+0x3ef/0x44c > [<ffffffff81a07930>] > x86_64_start_reservations+0xbb/0xd6 > [<ffffffff81a0be20>] xen_start_kernel+0x5dc/0x5e3 > [<ffffffffffffffff>] 0xffffffffffffffff > INITIAL USE at: > [<ffffffff81099b08>] __lock_acquire+0x33f/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff815138f7>] _spin_lock+0x45/0x8e > [<ffffffff811229b4>] __purge_vmap_area_lazy+0x63/0x198 > [<ffffffff81124280>] vm_unmap_aliases+0x18f/0x1b2 > [<ffffffff8100e594>] xen_alloc_ptpage+0x47/0x75 > [<ffffffff8100e5ff>] xen_alloc_pte+0x13/0x15 > [<ffffffff81117bdb>] __pte_alloc_kernel+0x6f/0xdd > [<ffffffff811237ad>] > vmap_page_range_noflush+0x1c5/0x315 > [<ffffffff8112393e>] map_vm_area+0x41/0x6b > [<ffffffff81123a97>] __vmalloc_area_node+0x12f/0x167 > [<ffffffff81123b5f>] __vmalloc_node+0x90/0xb5 > [<ffffffff81123dd6>] __vmalloc+0x28/0x3e > [<ffffffff81a2db10>] > alloc_large_system_hash+0x12c/0x1f8 > [<ffffffff81a30190>] vfs_caches_init+0xb8/0x140 > [<ffffffff81a08629>] start_kernel+0x3ef/0x44c > [<ffffffff81a07930>] > x86_64_start_reservations+0xbb/0xd6 > [<ffffffff81a0be20>] xen_start_kernel+0x5dc/0x5e3 > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff817b59c8>] purge_lock.26578+0x18/0x40 > -> (vmap_area_lock){+.+...} ops: 0 { > HARDIRQ-ON-W at: > [<ffffffff81099a91>] __lock_acquire+0x2c8/0xc0e > x14a/0x20a > [<ffffffff81123b46>] __vmalloc_node+0x77/0xb5 > [<ffffffff81123dd6>] __vmalloc+0x28/0x3e > [<ffffffff81a2db10>] > alloc_large_system_hash+0x12c/0x1f8 > [<ffffffff81a30190>] vfs_caches_init+0xb8/0x140 > [<ffffffff81a08629>] start_kernel+0x3ef/0x44c > [<ffffffff81a07930>] > x86_64_start_reservations+0xbb/0xd6 > [<ffffffff81a0be20>] xen_start_kernel+0x5dc/0x5e3 > [<ffffffffffffffff>] 0xffffffffffffffff > SOFTIRQ-ON-W at: > [<ffffffff81099ab2>] __lock_acquire+0x2e9/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff815138f7>] _spin_lock+0x45/0x8e > [<ffffffff81122cee>] alloc_vmap_area+0x116/0x28a > [<ffffffff81122fac>] __get_vm_area_node+0x14a/0x20a > [<ffffffff81123b46>] __vmalloc_node+0x77/0xb5 > [<ffffffff81123dd6>] __vmalloc+0x28/0x3e > [<ffffffff81a2db10>] > alloc_large_system_hash+0x12c/0x1f8 > [<ffffffff81a30190>] vfs_caches_init+0xb8/0x140 > [<ffffffff81a08629>] start_kernel+0x3ef/0x44c > [<ffffffff81a07930>] > x86_64_start_reservations+0xbb/0xd6 > [<ffffffff81a0be20>] xen_start_kernel+0x5dc/0x5e3 > [<ffffffffffffffff>] 0xffffffffffffffff > INITIAL USE at: > [<ffffffff81099b08>] __lock_acquire+0x33f/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff815138f7>] _spin_lock+0x45/0x8e > [<ffffffff81122cee>] alloc_vmap_area+0x116/0x28a > [<ffffffff81122fac>] __get_vm_area_node+0x14a/0x20a > [<ffffffff81123b46>] __vmalloc_node+0x77/0xb5 > [<ffffffff81123dd6sh+0x12c/0x1f8 > [<ffffffff81a30190>] vfs_caches_init+0xb8/0x140 > [<ffffffff81a08629>] start_kernel+0x3ef/0x44c > [<ffffffff81a07930>] > x86_64_start_reservations+0xbb/0xd6 > [<ffffffff81a0be20>] xen_start_kernel+0x5dc/0x5e3 > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff817b5978>] vmap_area_lock+0x18/0x40 > -> (&rnp->lock){..-...} ops: 0 { > IN-SOFTIRQ-W at: > [<ffffffff81099a3e>] __lock_acquire+0x275/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff81513aca>] _spin_lock_irqsave+0x5d/0xab > [<ffffffff810ccbe5>] cpu_quiet+0x38/0xb0 > [<ffffffff810cd385>] > __rcu_process_callbacks+0x83/0x259 > [<ffffffff810cd5b8>] > rcu_process_callbacks+0x5d/0x76 > [<ffffffff8106ec56>] __do_softirq+0xf6/0x1f0 > [<ffffffff810162ac>] call_softirq+0x1c/0x30 > [<ffffffff81017d5b>] do_softirq+0x5f/0xd7 > [<ffffffff8106e56d>] irq_exit+0x66/0xbc > [<ffffffff8130a9aa>] > xen_evtchn_do_upcall+0x18d/0x1bd > [<ffffffff810162fe>] > xen_do_hypervisor_callback+0x1e/0x30 > [<ffffffffffffffff>] 0xffffffffffffffff > INITIAL USE at: > [<ffffffff81099b08>] __lock_acquire+0x33f/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff81513aca>] _spin_lock_irqsave+0x5d/0xab > [<ffffffff8150e73b>] > rcu_init_percpu_data+0x3d/0x18b > [<ffffffff8150e8d3>] rcu_cpu_notify+0x4a/0xa7 > [<ffffffff81a2a055>] __rcu_init+0x168/0x1b3 > [<ffffffff81a26e52>] rcu_init+0x1c/0x3e > [<ffffffff81a084a2>] start_kernel+0x268/0x44c > [<ffffffff81a07930>0x5e3 > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff8248c080>] __key.20517+0x0/0x8 > ... acquired at: > [<ffffffff8109a242>] __lock_acquire+0xa79/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff81513aca>] _spin_lock_irqsave+0x5d/0xab > [<ffffffff810cd124>] __call_rcu+0x9d/0x13c > [<ffffffff810cd229>] call_rcu+0x28/0x3e > [<ffffffff81122934>] __free_vmap_area+0x7b/0x98 > [<ffffffff81122a9a>] __purge_vmap_area_lazy+0x149/0x198 > [<ffffffff81124280>] vm_unmap_aliases+0x18f/0x1b2 > [<ffffffff8100da26>] xen_create_contiguous_region+0x4a/0xf3 > [<ffffffff8101208c>] xen_swiotlb_alloc_coherent+0x84/0xef > [<ffffffff813660dc>] dma_alloc_coherent+0xaf/0xec > [<ffffffff8136623f>] dmam_alloc_coherent+0x67/0xc0 > [<ffffffff813a357f>] ahci_port_start+0x63/0xf6 > [<ffffffff8138ce24>] ata_host_start+0xf4/0x1a9 > [<ffffffff8138d8ec>] ata_host_activate+0x39/0x102 > [<ffffffff813a483e>] ahci_init_one+0xca3/0xcd7 > [<ffffffff8129601f>] local_pci_probe+0x2a/0x42 > [<ffffffff8107e88f>] do_work_for_cpu+0x27/0x50 > [<ffffffff81083bcc>] kthread+0xac/0xb4 > [<ffffffff810161aa>] child_rip+0xa/0x20 > [<ffffffffffffffff>] 0xffffffffffffffff > > -> (&rcu_state.onofflock){..-...} ops: 0 { > IN-SOFTIRQ-W at: > [<ffffffff81099a3e>] __lock_acquire+0x275/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff815138f7>] _spin_lock+0x45/0x8e > [<ffffffff810cca51>] rcu_start_gp+0xc5/0x154 > [<ffffffff810ccb8e>] cpu_quiet_msk+0xae/0xcd > [<ffffffff810ccea8>] > rcu_process_dyntick+0xe0/0x11d > [<ffffffff810cd006>] > force_quiescent_state+0x121/0x1a2 > [<ffffffff810cd34a>] > __rcu_process_callbacks+0x48/0x259 > [<ffffffff810cd599>] > rcu_process_callbacks+0x3e/0x76 > [<ffffffff8106ec56>] __do_softirq+0xf6/0x1f0 > do_softirq+0x5f/0xd7 > [<ffffffff8106e56d>] irq_exit+0x66/0xbc > [<ffffffff8130a9aa>] > xen_evtchn_do_upcall+0x18d/0x1bd > [<ffffffff810162fe>] > xen_do_hypervisor_callback+0x1e/0x30 > [<ffffffffffffffff>] 0xffffffffffffffff > INITIAL USE at: > [<ffffffff81099b08>] __lock_acquire+0x33f/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff815138f7>] _spin_lock+0x45/0x8e > [<ffffffff8150e7e4>] > rcu_init_percpu_data+0xe6/0x18b > [<ffffffff8150e8d3>] rcu_cpu_notify+0x4a/0xa7 > [<ffffffff81a2a055>] __rcu_init+0x168/0x1b3 > [<ffffffff81a26e52>] rcu_init+0x1c/0x3e > [<ffffffff81a084a2>] start_kernel+0x268/0x44c > [<ffffffff81a07930>] > x86_64_start_reservations+0xbb/0xd6 > [<ffffffff81a0be20>] xen_start_kernel+0x5dc/0x5e3 > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff817b0130>] rcu_state+0x14f0/0x1580 > ... acquired at: > [<ffffffff8109a242>] __lock_acquire+0xa79/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff815138f7>] _spin_lock+0x45/0x8e > [<ffffffff8150e7f8>] rcu_init_percpu_data+0xfa/0x18b > [<ffffffff8150e8d3>] rcu_cpu_notify+0x4a/0xa7 > [<ffffffff81a2a055>] __rcu_init+0x168/0x1b3 > [<ffffffff81a26e52>] rcu_init+0x1c/0x3e > [<ffffffff81a084a2>] start_kernel+0x268/0x44c > [<ffffffff81a07930>] x86_64_start_reservations+0xbb/0xd6 > [<ffffffff81a0be20>] xen_start_kernel+0x5dc/0x5e3 > [<ffffffffffffffff>] 0xffffffffffffffff > > ... acquired at: > [<ffffffff8109a242>] __lock_acquire+0xa79/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff815138f7>] _spin_lock+0x45/0x8e > [<ffffffff810cca51>] rcu_start_gp+0xc5/0x154 > [<ffffffff810cd12f>] __call_rcu+0xa8/0x13c > [<ffffffff810cd229>] call_rcu+p_area_lazy+0x149/0x198 > [<ffffffff81124280>] vm_unmap_aliases+0x18f/0x1b2 > [<ffffffff8100da26>] xen_create_contiguous_region+0x4a/0xf3 > [<ffffffff8101208c>] xen_swiotlb_alloc_coherent+0x84/0xef > [<ffffffff813660dc>] dma_alloc_coherent+0xaf/0xec > [<ffffffff8136623f>] dmam_alloc_coherent+0x67/0xc0 > [<ffffffff813a357f>] ahci_port_start+0x63/0xf6 > [<ffffffff8138ce24>] ata_host_start+0xf4/0x1a9 > [<ffffffff8138d8ec>] ata_host_activate+0x39/0x102 > [<ffffffff813a483e>] ahci_init_one+0xca3/0xcd7 > [<ffffffff8129601f>] local_pci_probe+0x2a/0x42 > [<ffffffff8107e88f>] do_work_for_cpu+0x27/0x50 > [<ffffffff81083bcc>] kthread+0xac/0xb4 > [<ffffffff810161aa>] child_rip+0xa/0x20 > [<ffffffffffffffff>] 0xffffffffffffffff > > ... acquired at: > [<ffffffff8109a242>] __lock_acquire+0xa79/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff815138f7>] _spin_lock+0x45/0x8e > [<ffffffff81122a83>] __purge_vmap_area_lazy+0x132/0x198 > [<ffffffff81124280>] vm_unmap_aliases+0x18f/0x1b2 > [<ffffffff8100da26>] xen_create_contiguous_region+0x4a/0xf3 > [<ffffffff8101208c>] xen_swiotlb_alloc_coherent+0x84/0xef > [<ffffffff813660dc>] dma_alloc_coherent+0xaf/0xec > [<ffffffff8136623f>] dmam_alloc_coherent+0x67/0xc0 > [<ffffffff813a357f>] ahci_port_start+0x63/0xf6 > [<ffffffff8138ce24>] ata_host_start+0xf4/0x1a9 > [<ffffffff8138d8ec>] ata_host_activate+0x39/0x102 > [<ffffffff813a483e>] ahci_init_one+0xca3/0xcd7 > [<ffffffff8129601f>] local_pci_probe+0x2a/0x42 > [<ffffffff8107e88f>] do_work_for_cpu+0x27/0x50 > [<ffffffff81083bcc>] kthread+0xac/0xb4 > [<ffffffff810161aa>] child_rip+0xa/0x20 > [<ffffffffffffffff>] 0xffffffffffffffff > > > stack backtrace: > Pid: 42, comm: khubd Not tainted 2.6.31.6 #8 > Call Trace: > [<ffffffff810996bb>] check_usage+0x29a/0x2bf > [<ffffffff8109933b>] ? check_noncircular+0xa1/0xe8 > [<ffffffff81099750>] check_irq_usage+0x70/0xe9 > [<ffffffff8109a13c>] __lock_acquire+0x973/0xc0e > [<ffffffff8109a4c5>] lock_acquire+0xee/0x12e > [<ffffffff811298c4>] ? dma_pool_alloc+0x45/0x321 > [<ffffffff811298c4>] ? dma_pool_alloc+0x45/0x321 > [<ffffffff81513aca>] _spin_lock_irqsave+0x5d/0xab > [<ffffffff811298c4>] ? dma_pool_alloc+0x45/0x321 > [<ffffffff81097bc7>] ? add_lock_to_list+0x8a/0xe5 > [<ffffffff811298c4>] dforce_evtchn_callback+0x20/0x36 > [<ffffffff8100f632>] ? check_events+0x12/0x20 > [<ffffffff813d959e>] ehci_qh_alloc+0x37/0xfe > [<ffffffff8100f61f>] ? xen_restore_fl_direct_end+0x0/0x1 > [<ffffffff813db182>] qh_append_tds+0x4c/0x478 > [<ffffffff815136ce>] ? _spin_unlock+0x3a/0x55 > [<ffffffff813db6a0>] ehci_urb_enqueue+0xf2/0xd7a > [<ffffffff8100f632>] ? check_events+0x12/0x20 > [<ffffffff813c0600>] ? usb_create_hcd+0x1a4/0x1ba > [<ffffffff813c0f76>] usb_hcd_submit_urb+0x86d/0xa03 > [<ffffffff8100f61f>] ? xen_restore_fl_direct_end+0x0/0x1 > [<ffffffff8100eb68>] ? xen_force_evtchn_callback+0x20/0x36 > [<ffffffff81098d57>] ? debug_check_no_locks_freed+0x13d/0x16a > [<ffffffff8100f632>] ? check_events+0x12/0x20 > [<ffffffff8100f61f>] ? xen_restore_fl_direct_end+0x0/0x1 > [<ffffffff810979f8>] ? lockdep_init_map+0xad/0x138 > [<ffffffff813c17e1>] usb_submit_urb+0x258/0x2eb > [<ffffffff810844c3>] ? __init_waitqueue_head+0x4d/0x76 > [<ffffffff813c3145>] usb_start_wait_urb+0x71/0x1d4 > [<ffffffff813c3543>] usb_control_msg+0x10c/0x144 > [<ffffffff813ba1ac>] hub_port_init+0x319/0x7ec > [<ffffffff813bd7f9>] hub_events+0x94d/0x11e6 > [<ffffffff8100f632>] ? check_events+0x12/0x20 > [<ffffffff8100eb68>] ? xen_force_evtchn_callback+0x20/0x36 > [<ffffffff813be0d8>] hub_thread+0x46/0x1d2 > [<ffffffff8108401f>] ? autoremove_wake_function+0x0/0x5f > [<ffffffff813be092>] ? hub_thread+0x0/0x1d2 > [<ffffffff81083bcc>] kthread+0xac/0xb4 > [<ffffffff810161aa>] child_rip+0xa/0x20 > [<ffffffff81015b10>] ? restore_args+0x0/0x30 > [<ffffffff810161a0>] ? child_rip+0x0/0x20 > usb 1-5: New USB device found, idVendor=14dd, idProduct=0002 > usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=3 > usb 1-5: Product: Multidevice > usb 1-5: Manufacturer: Peppercon AG > usb 1-5: SerialNumber: 0962b201b34649022DFD5493FE193F22 > usb 1-5: configuration #1 chosen from 1 choice > input: Peppercon AG Multidevice as > /devices/pci0000:00/0000:00:1a.7/usb1/1-5/1-5:1.2/input/input3 > generic-usb 0003:14DD:0002.0001: input,hidraw0: USB HID v1.01 Mouse > [Peppercon AG Multidevice] on usb-0000:00:1a.7-5/input2 > input: Peppercon AG Multidevice as > /devices/pci0000:00/0000:00:1a.7/usb1/1-5/1-5:1.3/input/input4 > generic-usb 0003:14DD:0002.0002: input,hidraw1: e] on > usb-0000:00:1a.7-5/input3 > > -- Pasi > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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