[Bug] - eBPF - unable to attach kprobe to kernel module functions

[brycekahle]

Describe the bug

amazonlinux/linux@b022f0c introduced a bug which made it impossible to attach a kprobe to a kernel module function, returning ENOENT. This was subsequently fixed a week later in amazonlinux/linux@926fe78 but this commit has not been back-ported to Amazon Linux 2023.

To Reproduce
Steps to reproduce the behavior:

Attach a kprobe to a kernel module function, such as __nf_conntrack_hash_insert in the nf_conntrack kernel module. You get the same error regardless if you get use the PMU or tracefs methods of attaching.

Expected behavior

Successful kprobe attach.

Additional context

uname -r = 6.1.61-85.141.amzn2023.x86_64