Hi, When I load the test_bpf module from mainline (v4.18-rc2) with CONFIG_BPF_JIT_ALWAYS_ON=y on a s390x system I get the following errors:
test_bpf: #289 BPF_MAXINSNS: Ctx heavy transformations FAIL to prog_create err=-524 len=4096 test_bpf: #290 BPF_MAXINSNS: Call heavy transformations FAIL to prog_create err=-524 len=4096 [...] test_bpf: #296 BPF_MAXINSNS: exec all MSH FAIL to prog_create err=-524 len=4096 test_bpf: #297 BPF_MAXINSNS: ld_abs+get_processor_id FAIL to prog_create err=-524 len=4096 >From a quick look at the code it seems that arch/s390/net/bpf_jit_comp.c:bpf_int_jit_compile() is failing to JIT compile the test code. Are those failures expected and could be flagged with FLAG_EXPECTED_FAIL on lib/test_bpf.c or are those caused by some issue with the s390x JIT compiler that needs to be fixed? Thanks, Kleber
