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In-Reply-To: <877flfu87x.fsf@yhuang-dev.intel.com>
References: <877flfu87x.fsf@yhuang-dev.intel.com>
From: Andy Lutomirski <luto@amacapital.net>
Date: Wed, 18 Nov 2015 08:17:13 -0800
Message-ID: <CALCETrW1wqZfr6Q5CwLkpD5K502bwwL+T3RnSmzmW+mRy4sBWw@mail.gmail.com>
Subject: Re: [lkp] [x86/entry/vsyscall] 3dc33bd30f: Kernel panic - not
 syncing: Attempted to kill init! exitcode=0x0000000b
To: kernel test robot <ying.huang@linux.intel.com>
Cc: Kees Cook <keescook@chromium.org>, LKP <lkp@01.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Peter Zijlstra <peterz@infradead.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Josh Triplett <josh@joshtriplett.org>,
        "H. Peter Anvin" <hpa@zytor.com>, Denys Vlasenko <dvlasenk@redhat.com>,
        Brian Gerst <brgerst@gmail.com>, Borislav Petkov <bp@alien8.de>,
        Ingo Molnar <mingo@kernel.org>
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On Tue, Nov 17, 2015 at 10:34 PM, kernel test robot
<ying.huang@linux.intel.com> wrote:
> FYI, we noticed the below changes on
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> commit 3dc33bd30f3e1c1bcaaafa3482737694debf0f0b ("x86/entry/vsyscall: Add CONFIG to control default")

This is intentional.  if you flip the default to disable vsyscalls,
then you need newer userspace code.

Can you either teach kbuild not to do that or rebuild your userspace
using an updated libc?

--Andy
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