diff options
| author | Alexei Starovoitov <ast@kernel.org> | 2023-02-14 15:50:51 -0800 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2023-02-15 09:24:59 -0800 |
| commit | 62d101d5f422cde39b269f7eb4cbbe2f1e26f9d4 (patch) | |
| tree | 59b808098f150e0f6ac994adcb30f2bae2c271b0 /kernel/bpf | |
| parent | 5e53e5c7edc6d69b8cb48b3b370cfe531e4b4132 (diff) | |
selftests/bpf: Fix map_kptr test.
The compiler is optimizing out majority of unref_ptr read/writes, so the test
wasn't testing much. For example, one could delete '__kptr' tag from
'struct prog_test_ref_kfunc __kptr *unref_ptr;' and the test would still "pass".
Convert it to volatile stores. Confirmed by comparing bpf asm before/after.
Fixes: 2cbc469a6fc3 ("selftests/bpf: Add C tests for kptr")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20230214235051.22938-1-alexei.starovoitov@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Diffstat (limited to 'kernel/bpf')
0 files changed, 0 insertions, 0 deletions