Re: ftdi_sio BUG: NULL pointer dereference

[Mike Remski]

On 06/02/2014 12:23 PM, Greg KH wrote:
> On Mon, Jun 02, 2014 at 12:09:36PM -0400, Mike Remski wrote:
> > On 06/02/2014 11:40 AM, Johan Hovold wrote:
> > > [ Please avoid top-posting. ]
> > >
> > > On Mon, Jun 02, 2014 at 11:16:11AM -0400, Mike Remski wrote:
> > > > Thanks Johan, that's why I looked at the cross references for ftdi_sio.c
> > > > over on
> > > > http://lxr.free-electrons.com/source/drivers/usb/serial/ftdi_sio.c,
> > > > latest version it's showing is 3.14.  It appears that the ftdi_sio code
> > > > is largely the same as in 2.6.32, particularly in the
> > > > ftdi_set_max_packet_size() function.
> > > Lots of things have changed since v2.6.32 and not just in the driver
> > > itself but in all the infrastructure it relies on.
> > >
> > > > I'm trying to verify if the "number of endpoints is 0" is a valid
> > > > situation.
> > > No, that is not normal, but it should not crash the driver if it's a
> > > hardware issue. What is the lsusb -v output of your device (make sure
> > > the ftdi_sio driver isn't loaded when connecting the device).
> > >
> > > And what happens if you plug it into a machine running a recent kernel?
> > >
> > > Thanks,
> > > Johan
> > Plugging device into a system running Redhat, kernel 3.3.4 crashes the
> > system.
> 3.3.4 is still _many_ years old.  Please try something from 2014 at the
> latest...

Understood Greg;  it was the best I had immediately available.  I am 
working on setting up/finding a later kernel at the moment.

thanks

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