linux-kernel - Re: exec error: BUG: Bad rss-counter

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Date:   Tue, 30 Mar 2021 09:36:01 -0700
From:   Ilya Lipnitskiy <ilya.lipnitskiy@...il.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Zhou Yanjie <zhouyanjie@...yeetech.com>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Linux-MM <linux-mm@...ck.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Kees Cook <keescook@...omium.org>,
        Christoph Hellwig <hch@....de>
Subject: Re: exec error: BUG: Bad rss-counter

On Tue, Mar 30, 2021 at 9:11 AM Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> On Mon, Mar 29, 2021 at 9:56 PM Zhou Yanjie <zhouyanjie@...yeetech.com> wrote:
> >
> > On 2021/3/29 上午10:48, Ilya Lipnitskiy wrote:
> > >
> > > Try:
> > > diff --git a/mm/memory.c b/mm/memory.c
> > > index c8e357627318..1fd753245369 100644
> > > --- a/mm/memory.c
> > > +++ b/mm/memory.c
> > > @@ -166,7 +166,7 @@ static int __init init_zero_pfn(void)
> > >          zero_pfn = page_to_pfn(ZERO_PAGE(0));
> > >          return 0;
> > >   }
> > > -core_initcall(init_zero_pfn);
> > > +early_initcall(init_zero_pfn);
> >
> > It works, thanks!
>
> Looks good to me - init_zero_pfn() can be called early, because it
> depends on paging_init() will should have happened long before any
> initcalls in setup_arch().
>
> Ilya, mind sending a signed-off version with a nice commit message,
> and I'll apply it.
Sorry, I could have done better linking it to this thread - I actually
did submit it recently - please see
https://lkml.kernel.org/r/20210330044208.8305-1-ilya.lipnitskiy@gmail.com

Ilya