Re: [PATCH v2 2/2] tools/bpf/bpftool: Reset vmlinux BTF after struct_ops commands

[bot+bpf-ci]

>     tools/bpf/bpftool: Reset vmlinux BTF after struct_ops commands
>
>     struct_ops frees the global btf_vmlinux object.
>
>     In batch mode, a later struct_ops command can reuse stale state.
>
>     Reset the BTF pointer and cached map info state.
>
>     Signed-off-by: Yichong Chen <chenyichong@xxxxxxxxxxxxx>

This looks like a fix for a stale-state reuse problem in do_struct_ops(),
where btf__free() left btf_vmlinux and the cached map_info_type/
map_info_type_id dangling for a later struct_ops command in batch mode.

The cached state and the do_struct_ops() free path date back to when
struct_ops.c was first added.  Should this carry a Fixes: tag?

  Fixes: 65c93628999c ("bpftool: Add struct_ops support")


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