[Nouveau] [Bug 105174] New: [regression] BUG unable to handle kernel NULL pointer dereference in kernel 4.15.3

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105174

            Bug ID: 105174
           Summary: [regression] BUG unable to handle kernel NULL pointer
                    dereference in kernel 4.15.3
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: dominik at greysector.net
        QA Contact: xorg-team at lists.x.org

Created attachment 137463
  --> https://bugs.freedesktop.org/attachment.cgi?id=137463&action=edit
full dmesg

After updating to Fedora kernel 4.15.3-300.fc27.x86_64, I got:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
IP: nouveau_mem_host+0x47/0x1b0 [nouveau]

Full dmesg attached. The hardware is Dell XPS 15 with Intel and nVidia GPU in
Optimus configuration.

Note: this looks different from bug 105173.

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