On Mon, Apr 10, 2023 at 04:59:06PM +0800, Feng zhou wrote:
From: Feng Zhou zhoufeng.zf@bytedance.com
When access traced function arguments with type is u32*, bpf verifier failed. Because u32 have typedef, needs to skip modifier. Add btf_type_is_modifier in is_int_ptr. Add a selftest to check it.
Feng Zhou (2): bpf/btf: Fix is_int_ptr() selftests/bpf: Add test to access u32 ptr argument in tracing program
Changelog: v2->v3: Addressed comments from jirka
- Fix an issue that caused other test items to fail
Details in here: https://lore.kernel.org/all/20230407084608.62296-1-zhoufeng.zf@bytedance.com...
Acked-by: Jiri Olsa jolsa@kernel.org
jirka
v1->v2: Addressed comments from Martin KaFai Lau
- Add a selftest.
- use btf_type_skip_modifiers.
Some details in here: https://lore.kernel.org/all/20221012125815.76120-1-zhouchengming@bytedance.c...
kernel/bpf/btf.c | 8 ++------ net/bpf/test_run.c | 8 +++++++- .../testing/selftests/bpf/verifier/btf_ctx_access.c | 13 +++++++++++++ 3 files changed, 22 insertions(+), 7 deletions(-)
-- 2.20.1