Comment 17 for bug 1097396

Here is a backtrace from crash:

      KERNEL: kernel_link
    DUMPFILE: dump.201301181214 [PARTIAL DUMP]
        CPUS: 4
        DATE: Fri Jan 18 12:14:12 2013
      UPTIME: 00:00:37
LOAD AVERAGE: 0.76, 0.19, 0.06
       TASKS: 341
    NODENAME: ubuntu-ThinkPad-X220
     RELEASE: 3.2.0-35-generic
     VERSION: #55-Ubuntu SMP Wed Dec 5 17:42:16 UTC 2012
     MACHINE: x86_64 (2491 Mhz)
      MEMORY: 3.9 GB
       PANIC: "[ 37.128952] Oops: 0000 [#1] SMP " (check log for details)
         PID: 1895
     COMMAND: "zeitgeist-fts"
        TASK: ffff880106072e00 [THREAD_INFO: ffff8800c81d2000]
         CPU: 0
       STATE: TASK_RUNNING (PANIC)

crash> bt
PID: 1895 TASK: ffff880106072e00 CPU: 0 COMMAND: "zeitgeist-fts"
 #0 [ffff88011e2038c0] machine_kexec at ffffffff8103947a
 #1 [ffff88011e203930] crash_kexec at ffffffff810b52c8
 #2 [ffff88011e203a00] oops_end at ffffffff8165e168
 #3 [ffff88011e203a30] no_context at ffffffff816431ce
 #4 [ffff88011e203a70] __bad_area_nosemaphore at ffffffff816433a4
 #5 [ffff88011e203ad0] bad_area_nosemaphore at ffffffff816433d6
 #6 [ffff88011e203ae0] do_page_fault at ffffffff81660da6
 #7 [ffff88011e203bf0] page_fault at ffffffff8165d735
    [exception RIP: snd_complete_urb+107]
    RIP: ffffffffa03f041b RSP: ffff88011e203ca8 RFLAGS: 00010002
    RAX: 0000000000000000 RBX: ffff8801137332b8 RCX: 0000000000000002
    RDX: ffff8800ce171900 RSI: ffff8800ce171900 RDI: ffff8800ce171900
    RBP: ffff88011e203cd8 R8: 0000000000000206 R9: 0000000000000000
    R10: 0000000002552620 R11: 0000000000000000 R12: ffff880113733358
    R13: 0000000000000000 R14: ffff8800ce171900 R15: 0000000000000000
    ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0000
 #8 [ffff88011e203ce0] usb_hcd_giveback_urb at ffffffff814940e4
 #9 [ffff88011e203d10] ehci_urb_done at ffffffff814ac0a0
#10 [ffff88011e203d50] sitd_complete at ffffffff814ad0ab
#11 [ffff88011e203d80] scan_periodic at ffffffff814ad536
#12 [ffff88011e203e10] ehci_work at ffffffff814ad7c9
#13 [ffff88011e203e30] ehci_irq at ffffffff814adaa1
#14 [ffff88011e203e90] usb_hcd_irq at ffffffff814937ed
#15 [ffff88011e203eb0] handle_irq_event_percpu at ffffffff810d9dc5
#16 [ffff88011e203f10] handle_irq_event at ffffffff810d9fd1
#17 [ffff88011e203f40] handle_fasteoi_irq at ffffffff810dcffa
#18 [ffff88011e203f60] handle_irq at ffffffff81016282
#19 [ffff88011e203f80] do_IRQ at ffffffff816680da
--- <IRQ stack> ---
#20 [ffff8800c81d3f50] ret_from_intr at ffffffff8165d46e
    RIP: ffffffffffffff9e RSP: 0000000000000206 RFLAGS: 00000033
    RAX: 000000000255fc70 RBX: 0000000000000000 RCX: 00000000025683f0
    RDX: 00007fff27884d90 RSI: 0000000002569470 RDI: 00007f028050a730
    RBP: 0000000000000001 R8: 0000000000000767 R9: 0000000002552620
    R10: 0000000000000000 R11: ffffffff816655c2 R12: 00000000025bda70
    R13: 0000000002557940 R14: 00007fff27884c18 R15: 000000010256c220
    ORIG_RAX: 00007f02740080a0 CS: 7f0280515551 SS: 7fff27884d20
bt: WARNING: possibly bogus exception frame