Re: [kbuild-all] [rcu:rcu/next 4/4] frv-linux-ld: Warning: size of symbol `sys_membarrier' changed from 8 in kernel/sys_ni.o to 44 in kernel/sched/membarrier.o

[Fengguang Wu]

On Fri, Jul 28, 2017 at 11:19:33AM +0200, Peter Zijlstra wrote:
> On Fri, Jul 28, 2017 at 12:46:40AM +0000, Mathieu Desnoyers wrote:
>
> > > This is a new one on me.  What do we do to fix it?
>
> Apparently (see below) the answer is, we ignore this.
>
> > I would suspect this might be caused by moving membarrier.c from kernel/
> > to kernel/sched/. Perhaps Peter knows ?
>
> <peterz> dhowells: hey, I know you don't care about FRV anymore, but suppose the 0-day thing says things like:
> <peterz> >>    frv-linux-ld: Warning: size of symbol `sys_setuid' changed from 272 in
> <peterz> >>    kernel/sys.o to 8 in kernel/sys_ni.o
> <peterz> dhowells: do you have any clue wth went wrong?
> <dhowells> peterz: it's been saying that for a long time, but I've no idea why
> <dhowells> didn't seem to stop it working
> <dhowells> I suspect it might not be handing weak symbol elimination correctly or something
> <peterz> fair enough, I'll ignore it then

OK, I'll teach the robot to ignore all such warnings:

       frv-linux-ld: Warning: size of symbol `sys_setuid' changed from 272 in kernel/sys.o to 8 in kernel/sys_ni.o

I'll use blacklist pattern:

       frv-linux-ld: Warning: size of symbol .* changed from

Thanks,
Fengguang