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From: Peter Zijlstra <peterz@infradead.org>
To: Kees Cook <keescook@chromium.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>,
	Ingo Molnar <mingo@kernel.org>,
	"kernelci.org bot" <bot@kernelci.org>,
	linux-next@vger.kernel.org
Subject: Re: Fw: next/pending-fixes build: 162 builds: 2 failed, 160 passed, 2 errors, 109 warnings (v5.7-8671-g086779e58c68)
Date: Fri, 5 Jun 2020 16:47:59 +0200	[thread overview]
Message-ID: <20200605144759.GG4117@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <202006050734.97C4AB35CF@keescook>

On Fri, Jun 05, 2020 at 07:36:02AM -0700, Kees Cook wrote:
> On Fri, Jun 05, 2020 at 10:38:55AM +0200, Peter Zijlstra wrote:
> > On Fri, Jun 05, 2020 at 11:52:13AM +1000, Stephen Rothwell wrote:
> > > Commit
> > > 
> > >   a148866489fb ("sched: Replace rq::wake_list")
> > > 
> > > added
> > > 
> > > BUILD_BUG_ON(offsetof(struct task_struct, wake_entry_type) - offsetof(struct task_struct, wake_entry) !=
> > > 		     offsetof(struct __call_single_data, flags) - offsetof(struct __call_single_data, llist));
> > > 
> > > in kernel/smp.c.  This seems to be failing - at least for gcc-8 (I
> > > haven't seen any failures in my linux-next testing).
> > 
> > CONFIG_GCC_PLUGIN_RANDSTRUCT=y
> 
> (FWIW, the plugins will only be enabled if the gcc plugins-dev package is
> installed)

Which I hadn't, which is why I'd never seen it. I have now.

> > working on it.
> 
> Either of these solutions should fix it. I'm not sure which is
> preferred.

I posted in another thread that had earlier raised the issue:

https://lkml.kernel.org/r/20200605093704.GB2948@hirez.programming.kicks-ass.net

      reply	other threads:[~2020-06-05 14:48 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-05  1:52 Fw: next/pending-fixes build: 162 builds: 2 failed, 160 passed, 2 errors, 109 warnings (v5.7-8671-g086779e58c68) Stephen Rothwell
2020-06-05  8:38 ` Peter Zijlstra
2020-06-05 14:36   ` Kees Cook
2020-06-05 14:47     ` Peter Zijlstra [this message]

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