kallsyms_lookup_name unexported in newer kernel

[mothran]

While attempting to build the module on a newer kernel I hit build error:
ERROR: modpost: "kallsyms_lookup_name" [src/afl_snapshot.ko] undefined!

Turns out recent patches to the kernel have unexported the kallsyms_lookup_name symbol so it can't be easily used in out-of-tree builds [1][2]. It's possible I might have missed something in my setup though.

Kernel version: 5.7.7-arch1-1

References:
[1] https://lkml.org/lkml/2020/2/21/1269
[2] https://lwn.net/Articles/813350/

[andreafioraldi]

Maybe fixed in 0620b07
Can you try to checkout that commit?