Comment # 15 on bug 996543 from Bernhard Wiedemann

After fighting a day to get working kernels built
and some hours of bisecting,
I found that 3.12.60 also worked, but 3.12.0 didnt

and with bisect I found
commit 7b831da141a97f9bc60d3b6ef0b21dcaf596ec74
Author: Ani Sinha <ani@arista.com>
Date:   Fri Oct 30 16:54:31 2015 -0700

    ipmr: fix possible race resulting from improper usage of IP_INC_STATS_BH()
in preemptible context.

    [ Upstream commit 44f49dd8b5a606870a1f21101522a0f9c4414784 ]


as the fixing commit there
=> CCing Jiri

The commit message also metions wake_up

This commit did hit master around 4.3-rc7
but both that 4.3-rc7 and the SLE-based 3.12.62 kernel in 13.1 do not resume
correctly

Might there be a different breakage that was introduced later?
Need to bisect some more...