WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] Re: pv_ops dom0 kernel vga text console line offset prob

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Re: pv_ops dom0 kernel vga text console line offset problem
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Mon, 1 Feb 2010 13:42:30 +0200
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Delivery-date: Mon, 01 Feb 2010 03:42:52 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <20100124161219.GF2861@xxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <20091213163135.GZ16033@xxxxxxxxxxx> <4B27DEA0.6050605@xxxxxxxx> <20100124161219.GF2861@xxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mutt/1.5.18 (2008-05-17)
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

<Prev in Thread] Current Thread [Next in Thread>
  • Re: [Xen-devel] Re: pv_ops dom0 kernel vga text console line offset problem, Pasi Kärkkäinen <=