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| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2023-01-28 03:06:33 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-01-28 23:30:09 +0300 |
| commit | be6b5c10ecc4014446e5c807d6a69c5a7cc1c497 (patch) | |
| tree | a7569719e03da3a9c27bbf7e1a686aea5e846a64 /tools/testing/selftests/bpf/prog_tests | |
| parent | 80a611904eef65e8c60e0c8c8f50fa98a0bd0c69 (diff) | |
| download | linux-be6b5c10ecc4014446e5c807d6a69c5a7cc1c497.tar.xz | |
selftests/bpf: Add a sign-extension test for kfuncs
s390x ABI requires the caller to zero- or sign-extend the arguments.
eBPF already deals with zero-extension (by definition of its ABI), but
not with sign-extension.
Add a test to cover that potentially problematic area.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Link: https://lore.kernel.org/r/20230128000650.1516334-15-iii@linux.ibm.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/kfunc_call.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/kfunc_call.c b/tools/testing/selftests/bpf/prog_tests/kfunc_call.c index 5af1ee8f0e6e..bb4cd82a788a 100644 --- a/tools/testing/selftests/bpf/prog_tests/kfunc_call.c +++ b/tools/testing/selftests/bpf/prog_tests/kfunc_call.c @@ -72,6 +72,7 @@ static struct kfunc_test_params kfunc_tests[] = { /* success cases */ TC_TEST(kfunc_call_test1, 12), TC_TEST(kfunc_call_test2, 3), + TC_TEST(kfunc_call_test4, -1234), TC_TEST(kfunc_call_test_ref_btf_id, 0), TC_TEST(kfunc_call_test_get_mem, 42), SYSCALL_TEST(kfunc_syscall_test, 0), |