https://bugzilla.novell.com/show_bug.cgi?id=878306
https://bugzilla.novell.com/show_bug.cgi?id=878306#c2
--- Comment #2 from Michal Hocko 2014-05-16 13:31:25 CEST ---
No, this is something different.
ffffffff81196a80 :
ffffffff81196a80: e8 7b 9f 42 00 callq ffffffff815c0a00
<__fentry__>
ffffffff81196a85: eb 24 jmp ffffffff81196aab
[...]
ffffffff81196aab: 48 8b 07 mov (%rdi),%rax
So the very first thing is jmp to our oopsing line. This means that we are
dereferencing mm->owner. Which traps of course.
We used to handle kernel threads correct but then there was a charge
routines rework which changed the code. I will go and check where did we
screw (after lunch).
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