*** This bug is a duplicate of bug 1680904 ***
https://bugs.launchpad.net/bugs/1680904
Over on the bug where I initially brought this up, Rocko tells me:
===
your lockup looks like
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1680904 (and the upstream
bug is https://bugs.freedesktop.org/show_bug.cgi?id=100516). It's a bug in the
Intel graphics drivers that unfortunately is present in both kernels 4.10 and
4.11, but should be fixed in 4.12.
===
Indeed, my kern.log looks very similar to the output in the first
comment on that bug. So I've marked this as a duplicate.
** This bug has been marked a duplicate of bug 1680904
zesty unable to handle kernel NULL pointer dereference
** Bug watch added: freedesktop.org Bugzilla #100516
https://bugs.freedesktop.org/show_bug.cgi?id=100516
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https://bugs.launchpad.net/bugs/1693357
Title:
Random system lockup with " BUG: unable to handle kernel NULL pointer
dereference at 0000000000000018", "IP:
gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915]"
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