[Bug 104436] New: Regression in kernel 4.15-rc1, GPF and display locks up. Still in rc6

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104436

            Bug ID: 104436
           Summary: Regression in kernel 4.15-rc1, GPF and display locks
                    up.  Still in rc6
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: m.keehan at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 136469
  --> https://bugs.freedesktop.org/attachment.cgi?id=136469&action=edit
Full dmesg from boot to error report, with drm.debug=0x1e set.

I am getting a General Protection Fault on 4.15-rc1, and the X11 screen
locks up within minutes of login, at every boot.  Fault is still reproducible
in 4.15-rc6 at every boot.  Previous kernels have all been fine.

file <kernel>: Linux kernel x86 boot executable bzImage, version 4.15.0-rc6
(mkeehan at babelfish) #11 SMP PREEMPT Mon Jan 1 13:11:17 GMT 2018, RO-rootFS,
swap_dev 0x4, Normal VGA
I use the Arch distribution, which is up to date as of today, Jan 1, 2018.

I use the xf86-video-intel, the i915 driver.  Haven't tried nomodesetting yet.

I tried bisecting rc1, but found that some "good" bisections would hang up
after a few hours use.  Whereas the hang occurred within minutes of booting rc1
itself.

The file /sys/class/drm/card0/error was empty.  I used ssh into the locked up
laptop.

There is an nVidia chip present in this Dell Laptop XPS15, but I don't include
any nouveau driver in the kernel, nor the proprietary nVidia driver.  There are
no bios options for video card selection or disabling.

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