linux-kernel - Re: iwlwifi: BUG: unable to handle kernel paging request at ffffc90000e1c808

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Message-ID: <748205b02961167b0926d4afe8d9ad9cb37bf6ef.camel@coelho.fi>
Date:   Wed, 17 Apr 2019 10:33:56 +0300
From:   Luca Coelho <luca@...lho.fi>
To:     Michal Hocko <mhocko@...nel.org>,
        Johannes Berg <johannes.berg@...el.com>,
        Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
        Intel Linux Wireless <linuxwifi@...el.com>,
        linux-wireless@...r.kernel.org
Cc:     LKML <linux-kernel@...r.kernel.org>
Subject: Re: iwlwifi: BUG: unable to handle kernel paging request at
 ffffc90000e1c808

On Tue, 2019-04-16 at 20:36 +0200, Michal Hocko wrote:
> On Fri 12-04-19 11:49:08, Michal Hocko wrote:
> > On Thu 11-04-19 23:07:20, Michal Hocko wrote:
> > > Hi,
> > > I have just encountered the following splat with 5.1-rc4. Is this
> > > a
> > > known problem? Greping throug older logs show that "Error sending
> > > SCAN_CFG_CMD"
> > > is not new. In older kernels it was followed by "Start IWL Error
> > > Log Dump:"
> > > but it oopsed now. I was running 5.0 previously. Let me know if
> > > you need
> > > more information.
> > 
> > FTR It happened again with 5.1.0-rc2-00001-ga3ac7917b730
> 
> Is there anything more I can provide to help with this issue. I had
> to
> go back to 5.0 because the system is not really usable after the
> oops.

Michal, thanks for reporting and all the data.  We have a fix for it
and I'm going to send it out in a second.  Please try it out and let us
know whether it works for you.

--
Cheers,
Luca.