Re: [Linux-ia64] problems with ppp/pppd: put_user/copy_to_user

From: David Mosberger <>
Date: 2001-05-24 06:15:00
>>>>> On Wed, 23 May 2001 14:56:43 -0400, Bill Nottingham <> said:

  Bill> We've got a report of ppp not working; what happens is that it
  Bill> puts in the log: Couldn't get channel number: bad address

  Bill> when it sends the PPPIOCGCHAN ioctl.

  Bill> However, if we replace the calls to put_user for PPPIOCGCHAN &
  Bill> PPPIOCGFLAGS ioctls with copy_to_user, it works
  Bill> fine. Shouldn't this not make any difference?

It should not make a difference.  Is there an easy test case that
reproduces the problem?

Received on Wed May 23 13:18:10 2001

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