Re: kern/50810: Kernel page fault trap in ugenclose()

To: gnats-bugs%NetBSD.org@localhost, gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost, Andreas Gustafsson <gson%gson.org@localhost>
Subject: Re: kern/50810: Kernel page fault trap in ugenclose()
From: Nick Hudson <skrll%netbsd.org@localhost>
Date: Sat, 20 Feb 2016 09:56:39 +0000

On 02/16/16 09:30, Andreas Gustafsson wrote:

  ugenioctl: cmd=c00c5567
  ugenclose: flag=1, mode=8192, unit=0, endpt=1
  ugenclose: endpt=1 dir=1 sce=0xffff8000037e34d8
  ugenclose: endpt=1 dir=1 no edesc
  ugenclose: flag=2, mode=8192, unit=0, endpt=2
  ugenclose: endpt=2 dir=0 sce=0xffff8000037e3660
  ugenclose: endpt=2 dir=0 no edesc
  ugenclose: flag=3, mode=8192, unit=0, endpt=0
  ugenclose: close control

The ioctl (USB_SET_ALTINTERFACE) is blatting edesc and making it fail

Not sure why it's doing this before closing the endpoints.

Maybe the ioctl should fail here?

Nick

References:
- Re: kern/50810: Kernel page fault trap in ugenclose()
  - From: Andreas Gustafsson

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