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

[Jordan Rome <linux@xxxxxxxxxxxxxx>]

On Fri, Aug 23, 2024 at 2:52 PM Alexei Starovoitov
<alexei.starovoitov@xxxxxxxxx> wrote:
>
> 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?

The compiler didn't warn but no, I meant to do just '&' - here comes v10!