diff options
| author | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2024-12-03 20:47:57 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2024-12-04 09:19:50 -0800 |
| commit | 19b6dbc006ecc1f2c8d7fa2d5afbfb7e7eba7920 (patch) | |
| tree | 946a937b0d54c465efe576bd77e6e1676345d25b /tools | |
| parent | f513c3635078fc184af66b1af9e4f2b2d19b7d79 (diff) | |
selftests/bpf: Add test for narrow spill into 64-bit spilled scalar
Add a test case to verify that without CAP_PERFMON, the test now
succeeds instead of failing due to a verification error.
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20241204044757.1483141-6-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/verifier_spill_fill.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/verifier_spill_fill.c b/tools/testing/selftests/bpf/progs/verifier_spill_fill.c index bab6d789ba00..1e5a511e8494 100644 --- a/tools/testing/selftests/bpf/progs/verifier_spill_fill.c +++ b/tools/testing/selftests/bpf/progs/verifier_spill_fill.c @@ -1262,4 +1262,21 @@ __naked void stack_noperfmon_reject_invalid_read(void) " ::: __clobber_all); } +SEC("socket") +__description("stack_noperfmon: narrow spill onto 64-bit scalar spilled slots") +__success +__caps_unpriv(CAP_BPF) +__success_unpriv +__naked void stack_noperfmon_spill_32bit_onto_64bit_slot(void) +{ + asm volatile(" \ + r0 = 0; \ + *(u64 *)(r10 - 8) = r0; \ + *(u32 *)(r10 - 8) = r0; \ + exit; \ +" : + : + : __clobber_all); +} + char _license[] SEC("license") = "GPL"; |