[Xen-bugs] [Bug 1407] New: kernel BUG at arch/x86/kernel/pci-nommu-xen.c:69!

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1407

           Summary: kernel BUG at arch/x86/kernel/pci-nommu-xen.c:69!
           Product: Xen
           Version: unspecified
          Platform: x86
        OS/Version: Linux-2.6
            Status: NEW
          Severity: major
          Priority: P2
         Component: Hardware Support
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: maxime.breitung@xxxxxxxxx


Hi,

I would like to share some USB port into a domU.

Here is my dom0 conf:

title           Xen 3.2-1-i386 / Debian GNU/Linux, kernel 2.6.26-1-xen-686
root            (hd0,0)
kernel          /xen-3.2-1-i386.gz
module          /vmlinuz-2.6.26-1-xen-686 root=/dev/sda3 ro pciback.permissive
pciback.hide=(00:1d.0)(00:1d.1)(00:1d.2)(00:1d.3)(00:1d.7) dom0_mem=-256M
module          /initrd.img-2.6.26-1-xen-686

dom0 conf:

kernel      = '/boot/vmlinuz-2.6.26-1-xen-686'
ramdisk     = '/boot/initrd.img-2.6.26-1-xen-686'
memory      = '256'
root        = '/dev/hda2 ro'
disk        = [
                  'file:/xen/domains/cctv/swap.img,hda1,w',
                  'file:/xen/domains/cctv/disk.img,hda2,w',
              ]
name        = 'cctv'
vif         = [ 'ip=10.1.1.10,mac=00:16:3E:00:00:10' ]
pci         = ['00:1d.0','00:1d.1','00:1d.2','00:1d.3''00:1d.7']
extra       = 'xencons=tty swiotlb=256,force'
on_poweroff = 'destroy'
on_reboot   = 'restart'
on_crash    = 'restart'


When booting I have this kernel message:

[   29.913765] Fatal DMA error! Please use 'swiotlb=force'
[   29.913810] ------------[ cut here ]------------
[   29.913829] kernel BUG at arch/x86/kernel/pci-nommu-xen.c:69!
[   29.913847] invalid opcode: 0000 [#1] SMP
[   29.913868] Modules linked in: sd_mod ipv6 usb_storage scsi_mod quickcam
videodev v4l1_compat ext3 jbd mbcache uhci_hcd usbcore thermal_sys
[   29.913950]
[   29.913968] Pid: 1511, comm: zmc Not tainted (2.6.26-1-xen-686 #1)
[   29.913990] EIP: 0061:[<c01083c6>] EFLAGS: 00010296 CPU: 0
[   29.914019] EIP is at gnttab_map_single+0x94/0xf7
[   29.914041] EAX: 0000003e EBX: 000646b5 ECX: 00000000 EDX: f5656000
[   29.914064] ESI: c7cb404c EDI: 00004fec EBP: c7c78e08 ESP: c6979d78
[   29.914087]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0069
[   29.914110] Process zmc (pid: 1511, ti=c6978000 task=c698b180
task.ti=c6978000)
[   29.914133] Stack: c0318795 010c8000 00000000 c02d42c0 00004fec 000000d0
c9058ad3 00004fec
[   29.914196]        00000002 c7c78e00 00000000 c65e3a00 c01ad006 c669a458
c7870b68 00000000
[   29.914257]        00000001 c6979de0 c7c46600 c7c46608 c664d868 c905e298
c6979de0 c9064a7a
[   29.914320] Call Trace:
[   29.914346]  [<c9058ad3>] usb_hcd_submit_urb+0x148/0x894 [usbcore]
[   29.914413]  [<c01ad006>] sysfs_create_link+0xb3/0xf5
[   29.914449]  [<c905e298>] usb_create_ep_files+0x216/0x260 [usbcore]
[   29.914516]  [<c905d917>] usb_create_sysfs_intf_files+0x5e/0x72 [usbcore]
[   29.914586]  [<c905a9b8>] usb_set_interface+0x143/0x14d [usbcore]
[   29.914649]  [<c90b4e7a>] qc_isoc_start+0x110/0x1a0 [quickcam]
[   29.914691]  [<c90b4f61>] qc_capt_get+0x57/0x5dc [quickcam]
[   29.914727]  [<c01504cc>] filemap_fault+0x1f5/0x359
[   29.914761]  [<c015a6cc>] __do_fault+0x48a/0x4c9
[   29.914793]  [<c90b6d9e>] qc_v4l_ioctl+0x5a8/0xbb2 [quickcam]
[   29.914833]  [<c015e8df>] handle_mm_fault+0x5f2/0xd46
[   29.914867]  [<c0105f7c>] get_nsec_offset+0xe/0x6a
[   29.914899]  [<c0106005>] local_clock+0x2d/0x6f
[   29.914928]  [<c0106227>] xen_clocksource_read+0xc/0x164
[   29.914961]  [<c017a813>] vfs_ioctl+0x47/0x5d
[   29.914992]  [<c017aa73>] do_vfs_ioctl+0x24a/0x261
[   29.915022]  [<c017aacb>] sys_ioctl+0x41/0x5a
[   29.915051]  [<c0103f76>] syscall_call+0x7/0xb
[   29.915080]  [<c02c0000>] pci_bus_size_bridges+0x35a/0x3a0
[   29.915113]  =======================
[   29.915129] Code: fe a1 80 3b 3c c0 8b 1c 90 81 e3 ff ff ff 7f 8b 04 24 89
f9 8b 54 24 04 e8 38 f4 ff ff 85 c0 74 0f 68 95 87 31 c0 e8 fb 6b 01 00 <0f> 0b
58 eb fe 85 f6 74 11 8b 86 e8 00 00 00 85 c0 74 07 8b 30
[   29.915380] EIP: [<c01083c6>] gnttab_map_single+0x94/0xf7 SS:ESP
0069:c6979d78
[   29.915449] ---[ end trace 0c3f8c4a0e8fae2f ]---



Can somebody take a look ? 
Do we need more information ?

Thanks,


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