linux-kernel - Re: [BUG] 4.14 regression: Xorg hangs on exit

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Date:   Tue, 21 Nov 2017 22:11:41 -0600
From:   Bob Tracy <rct@...rkin.frus.com>
To:     linux-kernel@...r.kernel.org
Subject: Re: [BUG] 4.14 regression: Xorg hangs on exit

On Tue, Nov 21, 2017 at 11:12:35AM -0600, Bob Tracy wrote:
> Apologies for the lack of detail, but the subject pretty much says it
> all.  Xorg works fine with 4.13, but hangs on exit with 4.14.
> 
> Logging in remotely and applying the "kill -9" sledgehammer has no
> effect.  System logs don't show anything unusual going on.  Rebooting
> hangs because of the unkillable process: hitting the reset switch is
> the only way forward.
> 
> Video driver is "radeon", reporting "ATOM BIOS: REDWOOD" at boot time.
> Console is fb0 == radeondrmfb.

Only an "occasional" bad deal?  Lockup doesn't happen every time.
I'll make this a "watch" item for the time being.  I'd apologize for the
noise, but I never saw this happen prior to running the 4.14 kernel.
Maybe was just lucky up until now :-(.

Running a 32-bit SMP kernel per "uname -a" output below:

Linux gherkin 4.14.0 #1 SMP PREEMPT Thu Nov 16 23:34:38 CST 2017 i686 Intel(R) Core(TM) i7-2600S CPU @ 2.80GHz GenuineIntel GNU/Linux

The i7-2600S has four hyperthreaded cores (/proc/cpuinfo shows 8 CPUs).

--Bob