From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Borkmann <daniel@iogearbox.net>
Subject: Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request
 at 0000a7cf
Date: Wed, 08 Mar 2017 23:51:42 +0100
Message-ID: <58C08AFE.2000504@iogearbox.net>
References: <20170301125426.l4nf65rx4wahohyl@wfg-t540p.sh.intel.com> <20170302202338.ci6wwb3yzjmdy4n2@wfg-t540p.sh.intel.com> <58B88353.2010508@iogearbox.net> <CA+55aFy97mLPLb4WXmRn-xLMNt+bNkrb_vaBsh+HOMLLnKPv7Q@mail.gmail.com> <58C08535.3070000@iogearbox.net> <CAGXu5jLB_+47FEJYTYJ5u6-u+vOBpWo_0tWuiNKnGmuMjL-mMQ@mail.gmail.com>
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Cc: Linus Torvalds <torvalds@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@kernel.org>, Peter Anvin <hpa@zytor.com>,
        Fengguang Wu <fengguang.wu@intel.com>,
        Network Development <netdev@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>, LKP <lkp@01.org>,
        ast@fb.com, the arch/x86 maintainers <x86@kernel.org>,
        Laura Abbott <labbott@redhat.com>,
        "David S. Miller" <davem@davemloft.net>
To: Kees Cook <keescook@chromium.org>
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On 03/08/2017 11:36 PM, Kees Cook wrote:
> On Wed, Mar 8, 2017 at 2:27 PM, Daniel Borkmann <daniel@iogearbox.net> wrote:
>> [   28.474232] rodata_test: test data was not read only
>> [...]
>
> In my tests so far, I've never been able to get rodata_test to fail
> (Qemu 2.5.0, Ubuntu). I'll retry with your .config and see if I can
> recheck under Qemu 2.7.1. Do you see these failures on real hardware?

The x86_64 tests on real hardware, and the x86-32 only in the qemu
environment with the reproducer script. Haven't tested x86-32 kernel
outside of qemu so far.

Thanks,
Daniel