[Xen-devel] kernel oops with driver domains: usb ohci Fatal DMA error! Please use 'swiotlb=force'

[Hans-Christian Armingeon <mog.johnny@xxxxxxx>]

Hi,

I am havong trouble exporting a pci device to a domU.
The kernel oopses quite early at boot.

How can I fix this?

Many thanks in advance,

Johnny

[509110.561082] PCI: Enabling device 0000:03:00.0 (0000 -> 0002)
[509110.577818] ohci_hcd 0000:03:00.0: OHCI Host Controller
[509110.578090] ohci_hcd 0000:03:00.0: new USB bus registered, assigned bus 
number 1
[509110.578105] ohci_hcd 0000:03:00.0: irq 20, io mem 0xfeafc000
[509110.634919] usb usb1: configuration #1 chosen from 1 choice
[509110.634947] hub 1-0:1.0: USB hub found
[509110.634985] hub 1-0:1.0: 3 ports detected
[509110.736386] PCI: Enabling device 0000:03:00.1 (0000 -> 0002)
[509110.744485] ohci_hcd 0000:03:00.1: OHCI Host Controller
[509110.744530] ohci_hcd 0000:03:00.1: new USB bus registered, assigned bus 
number 2
[509110.744540] ohci_hcd 0000:03:00.1: irq 20, io mem 0xfeafd000
[509110.794899] usb usb2: configuration #1 chosen from 1 choice
[509110.794920] hub 2-0:1.0: USB hub found
[509110.794945] hub 2-0:1.0: 3 ports detected
[509111.024323] usb 1-2: new full speed USB device using ohci_hcd and address 2
[509111.024333] Fatal DMA error! Please use 'swiotlb=force'
[509111.024344] ----------- [cut here ] --------- [please bite here ] ---------
[509111.024347] Kernel BUG at 
arch/x86_64/kernel/../../i386/kernel/pci-dma-xen.c:309
[509111.024353] invalid opcode: 0000 [1]
[509111.024357] CPU 0
[509111.024359] Modules linked in: ohci_hcd usbcore unix 8250 serial_core
[509111.024367] Pid: 1422, comm: khubd Tainted: GF     
2.6.16-xen-20060428.5-xen0 #1
[509111.024371] RIP: e030:[<ffffffff8010f680>] 
<ffffffff8010f680>{dma_map_single+347}
[509111.024382] RSP: e02b:ffff88001eb17bc8  EFLAGS: 00010296
[509111.024386] RAX: 000000000000003f RBX: ffff88001fa35240 RCX: 
0000000000001c3b
[509111.024391] RDX: ffffffffff578000 RSI: 0000000000001c3b RDI: 
ffffffff803b2840
[509111.024395] RBP: 000000018b59f240 R08: 0000000000000000 R09: 
0000000000001988
[509111.024399] R10: 000000000000003d R11: 0000000000000005 R12: 
0000000000000008
[509111.024403] R13: ffff880001a10870 R14: ffff88001ee4dad4 R15: 
0000000000000010
[509111.024410] FS:  00002ad34d8996d0(0000) GS:ffffffff804eb000(0000) 
knlGS:0000000000000000
[509111.024414] CS:  e033 DS: 0000 ES: 0000
[509111.024418] Process khubd (pid: 1422, threadinfo ffff88001eb16000, task 
ffff88001ee36800)
[509111.024422] Stack: ffff88001ee4dac0 ffff88001ee4dac0 0000000000000000 
ffff88001fe1e800
[509111.024429]        ffff88001fe1e048 ffffffff8801cabe ffffffffffffe404 
ffffffff801247d5
[509111.024437]        0000000000001bfc 0000000000001bfc
[509111.024441] Call Trace: <ffffffff8801cabe>{:usbcore:hcd_submit_urb+1613}
[509111.024463]        <ffffffff801247d5>{__call_console_drivers+65} 
<ffffffff80124a4b>{release_console_sem+311}
[509111.024475]        <ffffffff8012546a>{vprintk+583} 
<ffffffff8801d038>{:usbcore:timeout_kill+0}
[509111.024492]        <ffffffff8801d57c>{:usbcore:usb_start_wait_urb+70} 
<ffffffff801254ee>{printk+78}
[509111.024510]        <ffffffff8801d81f>{:usbcore:usb_control_msg+193} 
<ffffffff88018e41>{:usbcore:hub_port_init+556}
[509111.024535]        <ffffffff8801a93b>{:usbcore:hub_thread+1561} 
<ffffffff80135850>{autoremove_wake_function+0}
[509111.024554]        <ffffffff801354ac>{keventd_create_kthread+0} 
<ffffffff8801a322>{:usbcore:hub_thread+0}
[509111.024569]        <ffffffff801354ac>{keventd_create_kthread+0} 
<ffffffff801355fe>{kthread+205}
[509111.024578]        <ffffffff8010af2e>{child_rip+8} 
<ffffffff801354ac>{keventd_create_kthread+0}
[509111.024587]        <ffffffff80135531>{kthread+0} 
<ffffffff8010af26>{child_rip+0}
[509111.024595]
[509111.024595] Code: 0f 0b 68 8a f4 35 80 c2 35 01 5a 5b 48 89 e8 5d 41 5c 41 
5d
[509111.024609] RIP <ffffffff8010f680>{dma_map_single+347} RSP 
<ffff88001eb17bc8>
[509111.024617]  <7>pnp: the driver 'parport_pc' has been registered

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