Re: [PATCH bpf v4 0/5] bpf: Fix NULL-ptr-derefs when showing a void BTF type

[patchwork-bot+netdevbpf]

Hello:

This series was applied to bpf/bpf.git (master)
by Alexei Starovoitov <ast@xxxxxxxxxx>:

On Tue,  1 Sep 2026 18:47:34 +0800 you wrote:
> This series fixes three NULL-ptr-derefs in BTF handling.
> 
> Patch 1 handles the syzbot report. A key-less BTF (btf_key_type_id == 0) used
> to be rejected for hash maps, until htab and rhtab gained a ->map_check_btf
> (to register a dtor) that does not look at the key, so a key-less hash map is
> now accepted. Dumping it through bpffs feeds the key type_id 0 into
> btf_type_seq_show() and NULL-derefs in btf_type_show(). Reject it again.
> 
> [...]

Here is the summary with links:
  - [bpf,v4,1/5] bpf: Reject key-less BTF for hash maps
    https://git.kernel.org/bpf/bpf/c/0895a0c07347
  - [bpf,v4,2/5] bpf: Fix NULL-ptr-deref when showing a void BTF type
    https://git.kernel.org/bpf/bpf/c/4ea508b9ebd7
  - [bpf,v4,3/5] bpf: Fix NULL-ptr-deref in btf_var_show()
    https://git.kernel.org/bpf/bpf/c/5403a383f52f
  - [bpf,v4,4/5] selftests/bpf: Add test for key-less BTF hash map
    https://git.kernel.org/bpf/bpf/c/6265b44f2c3b
  - [bpf,v4,5/5] selftests/bpf: Add test for showing a void BTF type
    https://git.kernel.org/bpf/bpf/c/1ae6aa61958a

You are awesome, thank you!
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