Re: [PATCH bpf-next v6 0/2] bpf: Relax 8 frame limitation for global subprogs

[patchwork-bot+netdevbpf@kernel.org]

Hello:

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

On Mon, 16 Mar 2026 12:12:23 -0400 you wrote:
> The BPF verifier currently limits the maximum runtime call stack to
> 8 frames. Larger BPF programs like sched-ext schedulers routinely
> fail verification because they exceed this limit, even as they use
> very little actual stack space for each frame.
> 
> Relax the verifier to permit call stacks > 8 frames deep when the
> call stacks include global subprogs. The old 8 stack frame limit now
> only applies to call stacks composed entirely of static function calls.
> This works because global functions are each verified in isolation, so
> the verifier does not need to cross-reference verification state across
> the function call boundary, which has been the reason for limiting the
> call stack size in the first place.
> 
> [...]

Here is the summary with links:
  - [bpf-next,v6,1/2] bpf: Only enforce 8 frame call stack limit for all-static stacks
    https://git.kernel.org/bpf/bpf-next/c/ad95d3c758d8
  - [bpf-next,v6,2/2] selftests/bpf: Add deep call stack selftests
    https://git.kernel.org/bpf/bpf-next/c/01d5d2f7d93d

You are awesome, thank you!
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