Fix kernel bug in determining whether global subprog's argument is PTR_TO_CTX, which is done based on type names. Currently KPROBE programs are broken. Add few tests validating that KPROBE context can be passed to global subprog. For that also refactor test_global_funcs test to use test_loader framework. v1->v2: - fix compilation warning on arm64 and s390x by force-casting ctx to `void *`, to discard const from `const struct user_pt_regs *`, when passing it to bpf_get_stack(). Andrii Nakryiko (3): bpf: fix global subprog context argument resolution logic selftests/bpf: convert test_global_funcs test to test_loader framework selftests/bpf: add global subprog context passing tests kernel/bpf/btf.c | 13 +- .../bpf/prog_tests/test_global_funcs.c | 133 +++++------------- .../selftests/bpf/progs/test_global_func1.c | 6 +- .../selftests/bpf/progs/test_global_func10.c | 4 +- .../selftests/bpf/progs/test_global_func11.c | 4 +- .../selftests/bpf/progs/test_global_func12.c | 4 +- .../selftests/bpf/progs/test_global_func13.c | 4 +- .../selftests/bpf/progs/test_global_func14.c | 4 +- .../selftests/bpf/progs/test_global_func15.c | 4 +- .../selftests/bpf/progs/test_global_func16.c | 4 +- .../selftests/bpf/progs/test_global_func17.c | 4 +- .../selftests/bpf/progs/test_global_func2.c | 43 +++++- .../selftests/bpf/progs/test_global_func3.c | 10 +- .../selftests/bpf/progs/test_global_func4.c | 55 +++++++- .../selftests/bpf/progs/test_global_func5.c | 4 +- .../selftests/bpf/progs/test_global_func6.c | 4 +- .../selftests/bpf/progs/test_global_func7.c | 4 +- .../selftests/bpf/progs/test_global_func8.c | 4 +- .../selftests/bpf/progs/test_global_func9.c | 4 +- .../bpf/progs/test_global_func_ctx_args.c | 105 ++++++++++++++ 20 files changed, 292 insertions(+), 125 deletions(-) create mode 100644 tools/testing/selftests/bpf/progs/test_global_func_ctx_args.c -- 2.30.2