Hello:
This patch was applied to bpf/bpf.git (master)
by Alexei Starovoitov <ast@xxxxxxxxxx>:
On Tue, 29 Oct 2024 12:39:11 -0700 you wrote:
> Hou Tao reported an issue with bpf_fastcall patterns allowing extra
> stack space above MAX_BPF_STACK limit. This extra stack allowance is
> not integrated properly with the following verifier parts:
> - backtracking logic still assumes that stack can't exceed
> MAX_BPF_STACK;
> - bpf_verifier_env->scratched_stack_slots assumes only 64 slots are
> available.
>
> [...]
Here is the summary with links:
- [bpf] bpf: disallow 40-bytes extra stack for bpf_fastcall patterns
https://git.kernel.org/bpf/bpf/c/d0b98f6a17a5
You are awesome, thank you!
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