[PATCH bpf-next 09/11] bpf: Return PTR_ERR from push_stack()

[Eduard Zingerman]

On Thu, 2025-03-13 at 18:41 +0100, Luis Gerhorst wrote:

[...]

> @@ -2011,8 +2011,10 @@ static struct bpf_verifier_state *push_stack(struct bpf_verifier_env *env,
>  	int err;
>  
>  	elem = kzalloc(sizeof(struct bpf_verifier_stack_elem), GFP_KERNEL);
> -	if (!elem)
> -		goto err;
> +	if (!elem) {
> +		err = -ENOMEM;
> +		goto unrecoverable_err;
> +	}

Could you please point me to a location, where exact error code
returned by updated push_stack() matters?
I checked push_stack() callgraph (in the attachment), but can't find
anything.

>  
>  	elem->insn_idx = insn_idx;
>  	elem->prev_insn_idx = prev_insn_idx;
> @@ -2022,12 +2024,19 @@ static struct bpf_verifier_state *push_stack(struct bpf_verifier_env *env,

[...]

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