PT_REGS_RET 505 tools/testing/selftests/bpf/bpf_helpers.h #define BPF_KPROBE_READ_RET_IP(ip, ctx) ({ (ip) = PT_REGS_RET(ctx); }) PT_REGS_RET 509 tools/testing/selftests/bpf/bpf_helpers.h bpf_probe_read(&(ip), sizeof(ip), (void *)PT_REGS_RET(ctx)); })