Re: [CHECKER] potential dereference of user pointer errors

[Greg KH]

On Fri, Mar 21, 2003 at 04:15:50PM -0800, Chris Wright wrote:
> * Junfeng Yang ([e-mail]) wrote:
> > 
> > [MINOR] in debug data
> > 
> > /home/junfeng/linux-2.5.63/drivers/usb/serial/kobil_sct.c:429:kobil_write:
> > ERROR:TAINTED deferencing "buf" tainted by [dist=0][copy_from_user:parm1]
> 
> This is a bug, which could print kernel data if debugging was enabled.
> Greg, any reason the debug info can't just use the priv->buf?

Ugh, that's pretty bad.  That whole chunk of debug code should just be
replaced with a call to usb_serial_debug_data() like the other
usb-serial drivers do.

Patches welcomed :)

thanks,

greg k-h