back-edge from insn X to Y on kernel 4.19

[xiaonuoz]

Hi there,
The kernel of the development environment is 5.10.0,It runs without any problems.
The kernel of a system that failed to execute the program is 4.19.0.It doesn't have a /sys/kernel/btf folder.

so,I changed the address of LoadKernelSpec() to the current project and downloaded a corresponding kernel of vmlinux.

I don't know if this is the right migration.It sent an error.

Can you help me?
Thanks!

[ti-mo]

back-edge from insn 82 to 57 means your BPF program contains a loop (a backward jump). This has only been supported as of kernel 5.3, see: https://lwn.net/Articles/794934.