Re: linux-next: Tree for Jul 27 (kernel/bpf/syscall.o)

[Andrii Nakryiko]

On Mon, Jul 27, 2020 at 11:58 AM Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote:
>
> On 7/27/20 6:23 AM, Stephen Rothwell wrote:
> > Hi all,
> >
> > Changes since 20200724:
> >
>
> on i386:
> when CONFIG_XPS is not set/enabled:
>
> ld: kernel/bpf/syscall.o: in function `__do_sys_bpf':
> syscall.c:(.text+0x4482): undefined reference to `bpf_xdp_link_attach'
>

I can't repro this on x86-64 with CONFIG_XPS unset. Do you mind
sharing the exact config you've used?

I see that kernel/bpf/syscall.c doesn't include linux/netdevice.h
directly, so something must be preventing netdevice.h to eventually
get to bpf/syscall.c, but instead of guessing on the fix, I'd like to
repro it first. Thanks!


>
> --
> ~Randy
> Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>