[PATCH bpf-next 0/2] bpftool: Reset map info between queries

[Tianyi Chen <hi@tychen.cc>]

Reset map info before each query in the existing show and dump loops
to prevent BTF metadata from a preceding map leaking into a map without
BTF.

Patch 1 fixes the four query loops. Patch 2 adds regression tests for
full and named listings, JSON dumps, and plain dumps.

All four regression subtests fail on the unmodified bpf-next base and
pass with the fix in an x86-64 VM. This series does not depend on
recursive dumping or Maxim's series.

Tianyi Chen (2):
  bpftool: Reset map info before each query in show and dump loops
  selftests/bpf: Check bpftool map info across mixed BTF maps

 tools/bpf/bpftool/map.c                       |   8 ++
 .../bpf/prog_tests/bpftool_map_info.c         | 126 ++++++++++++++++++
 2 files changed, 134 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/bpftool_map_info.c


base-commit: ea9358e1270ab2c3ba6f36bd9bdda68617665516
-- 
2.55.0