linux-kernel - Re: NULL pointer dereference in call_fext_func [fujitsu

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Date:   Tue, 19 Sep 2017 17:42:41 +0930
From:   Jonathan Woithe <jwoithe@...t42.net>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Jiri Slaby <jslaby@...e.cz>, Micha?? K??pie?? <kernel@...pniu.pl>,
        "dvhart@...radead.org" <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Linux kernel mailing list <linux-kernel@...r.kernel.org>
Subject: Re: NULL pointer dereference in call_fext_func [fujitsu_laptop]

On Tue, Sep 19, 2017 at 11:07:29AM +0300, Andy Shevchenko wrote:
> On Tue, Sep 19, 2017 at 10:56 AM, Jiri Slaby <jslaby@...e.cz> wrote:
> > we have this report from 4.13.1:
> > BUG: unable to handle kernel NULL pointer dereference at 00000004
> > IP: call_fext_func.isra.3+0x82/0xf0 [fujitsu_laptop]
> > *pdpt = 0000000035e79001 *pde = 0000000000000000
> 
> Thanks for report.
> 
> Isn't it a duplicate of [1]? If so, perhaps you may continue that thread.
> [1]: https://www.spinics.net/lists/platform-driver-x86/msg12834.html

Yes, it is a duplicate of [1].  I agree that discussion should continue in
that earlier thread.

Regards
  jonathan