Comment 12 for bug 1838115

Colin Ian King (colin-king) wrote :

Did a bisect on the drm i915 driver, came up with no root cause.
Did a full bisect between 4.18 and 4.20, bisected down to a PTI commit:

7757d607c6b31867777de42e1fb0210b9c5d8b70 is the first bad commit
commit 7757d607c6b31867777de42e1fb0210b9c5d8b70
Author: Joerg Roedel <email address hidden>
Date: Wed Jul 18 11:41:14 2018 +0200

    x86/pti: Allow CONFIG_PAGE_TABLE_ISOLATION for x86_32

    Allow PTI to be compiled on x86_32.

This seems to make sense, it's x86_32 specific and explains the more random nature of the crashes.