Seth, I reported the same issue in LP#1763352 
My patch there does essentially the same as yours, so I will mention in that 
ticket that it's a duplicate. 

But your patch does not remove the wrong
"env->insn_aux_data[insn_idx].seen = true" from kernel/bpf/verifier.c
line 1844. I think that "seen" shouldn't be set there. The line was
probably added there by mistake. It should have been added for the LD
IMM64 case in the first place.

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  bpf_map_lookup_elem: BUG: unable to handle kernel paging request

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