[PATCH bpf-next v2 0/3] bpf: Check tail zero of bpf_map_info and bpf_prog_info

[Leon Hwang <leon.hwang@linux.dev>]

Check the tail bytes of bpf_map_info and bpf_prog_info due to padding
when getting map info and prog info via BPF_OBJ_GET_INFO_BY_FD, which
was discussed in the thread
"bpf: Check tail zero of bpf_common_attr using offsetofend" [1].

Links:
[1] https://lore.kernel.org/bpf/20260518145446.6794-2-leon.hwang@linux.dev/

Changes:
v1 -> v2:
* Collect Acked-by tags from Mykyta, thanks.
* Update Fixes tag in patch #2 (per bot+bpf-ci)
* v1: https://lore.kernel.org/bpf/20260603144518.67065-1-leon.hwang@linux.dev/

Leon Hwang (3):
  bpf: Check tail zero of bpf_map_info
  bpf: Check tail zero of bpf_prog_info
  selftests/bpf: Add tests to verify checking padding bytes for
    bpf_[map,prog]_info

 kernel/bpf/syscall.c                          | 10 ++--
 .../selftests/bpf/prog_tests/bpf_attr_size.c  | 55 +++++++++++++++++++
 2 files changed, 61 insertions(+), 4 deletions(-)

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2.54.0