[Bug 1117195]

[Apport retracing service]

StacktraceTop:
 ?? ()
 ?? ()
 ?? ()
 ?? ()
 __libc_start_main (main=0x401780, argc=2, ubp_av=0x7fff287ca608, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff287ca5f8) at libc-start.c:226

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https://bugs.launchpad.net/bugs/1117195

Title:
  lsusb crashed with SIGSEGV in __libc_start_main()

Status in “usbutils” package in Ubuntu:
  New

Bug description:
  This is a continuation of bug #1079188, which see for the
  circumstances when it happens.  I cannot reproduce it on demand, but
  after a resume, the color calibration light on my ThinkPad W510 comes
  on briefly.  If it does not go out, it indicates a condition in which
  lsusb -v (but not lsusb) segfaults and several (but not all) of the
  USB ports on this laptop stop working.  I have not found a way to
  reset it other than by rebooting.

  See also bug #737502, which affected the 11.04 release, but I do not
  get segfaults with lsusb or lsusb -t, and I'm on 11.10, which it
  claims fixed that bug.  So I'm guessing I have a different bug.
  Someone more experienced than I will have to decide.

  While it seems obvious, for the record, "what you expected to happen":
  no program should ever segfault (tall order, I know)
  my USB ports should not fail
  if they fail, I should be able to reset something (maybe unload/load a kernel module) and get them working without a reboot (wishful thinking?)

  Since this is an intermittent problem, please post suggestions for
  further diagnostics I can do ASAP, and I'll do them on the next USB
  crash.

  Thanks,

  --jh--

  ProblemType: Crash
  DistroRelease: Ubuntu 11.10
  Package: usbutils 1:001-1
  ProcVersionSignature: Ubuntu 3.0.0-30.47-generic 3.0.57
  Uname: Linux 3.0.0-30-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 1.23-0ubuntu4.1
  Architecture: amd64
  Date: Wed Feb  6 11:00:18 2013
  ExecutablePath: /usr/bin/lsusb
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  ProcCmdline: lsusb -v
  ProcEnviron:
   SHELL=/bin/bash
   LANG=en_US.UTF-8
  SegvAnalysis:
   Segfault happened at: 0x401b94:	movzbl (%rax),%edx
   PC (0x00401b94) ok
   source "(%rax)" (0x00000001) not located in a known VMA region (needed readable region)!
   destination "%edx" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: usbutils
  StacktraceTop:
   ?? ()
   ?? ()
   ?? ()
   ?? ()
   __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
  Title: lsusb crashed with SIGSEGV in __libc_start_main()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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