Comment # 8 on bug 1201644 from Frank Steiner

spectre_v2=off seems to fix the problem, at least I could boot our main Dell
540 with it that paniced consequently before. Before I came here I've opened a
SR with SuSE support (no. 00355361) which contains a dmesg output from a HP AIO
that I could collect before it crashed, as well as a screenlog from the full
boot process of the Dell 540. I won't post them here in case they contain
sensitive information, but you should be able to access them internally I
guess.