[PATCH v4 0/2] tools/bpf/bpftool: Fix vmlinux BTF state cleanup

[Yichong Chen]

This series fixes stale vmlinux BTF state in bpftool batch mode.

Patch 1 resets the map command cached vmlinux BTF pointer when the
command releases it, and avoids freeing the cached object from the
map lookup path.

Patch 2 resets the struct_ops command cached vmlinux BTF pointer and
dependent cached map info state after each struct_ops command.

Changes in v4:
- Add Emil's Reviewed-by tag to patch 1.
- Inline the struct_ops cleanup instead of adding a helper.

Changes in v3:
- Add Fixes tags to both patches.

Changes in v2:
- Fold the map lookup path fix into patch 1.
- Update patch 1 subject and commit message to cover map commands
  rather than only map dump.

Yichong Chen (2):
  tools/bpf/bpftool: Reset vmlinux BTF after map commands
  tools/bpf/bpftool: Reset vmlinux BTF after struct_ops commands

 tools/bpf/bpftool/map.c        | 12 +++++++++---
 tools/bpf/bpftool/struct_ops.c |  4 ++++
 2 files changed, 13 insertions(+), 3 deletions(-)

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2.51.0