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Date: Fri, 28 Jul 2017 05:43:28 -0700 From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> To: Fengguang Wu <fengguang.wu@...el.com> Cc: Peter Zijlstra <peterz@...radead.org>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, kbuild-all@...org, linux-kernel <linux-kernel@...r.kernel.org> Subject: 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 On Fri, Jul 28, 2017 at 05:42:16PM +0800, Fengguang Wu wrote: > 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 Thank you all for chasing this down! Thanx, Paul
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