Re: [bpf-next v9 2/2] bpf: Add tests for bpf_copy_from_user_str kfunc

[Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx>]

On Fri, Aug 23, 2024 at 11:49 AM Jordan Rome <linux@xxxxxxxxxxxxxx> wrote:
>
> +u32 dynamic_sz = 1;

..

> +
> +       // Make sure this passes the verifier
> +       ret = bpf_copy_from_user_str(data_long, dynamic_sz &= sizeof(data_long), user_ptr, 0);

Did you really mean to &= into the global variable while passing it as
an argument?

And the compiler didn't warn?