Hi,
This is a series of fixes for the BTF structure member finder in trace_btf.c
Sashiko found 2 problems in it during reviewing the wprobe series.[1][2]
I decided to pick those fixes as independent fix series.
[1] https://lore.kernel.org/all/[email protected]/
[2] https://lore.kernel.org/all/[email protected]/
- [1/2] btf_find_struct_member() did not consider unnamed bitfields.
Fix it to skip such unnamed bitfields from nested struct search.
- [2/2] get_bitoffset_of_field() wrongly checks the field's
type->kflag for offset encoding. It should check the member's
type->kflag instead. Thus it adds member_type out-parameter to
btf_find_struct_member() to get the member's type information
and use it.
Thanks,
---
base-commit: cee9395acd8043be0644b25c34bfa86623f2b935
Masami Hiramatsu (Google) (2):
tracing/probes: Fix anon_stack check for unnamed bitfields in
btf_find_struct_member
tracing/probes: Fix BTF kflag check for anonymous struct member access
kernel/trace/trace_btf.c | 31 +++++++++++++++++--------------
kernel/trace/trace_btf.h | 3 ++-
kernel/trace/trace_probe.c | 15 ++++++++-------
3 files changed, 27 insertions(+), 22 deletions(-)
--
Masami Hiramatsu (Google) <[email protected]>
