linux-kernel - Re: Bisected: spontaneous reboot in early boot on x86-64 in 4.6-rc

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Message-ID: <CALCETrV6ZKLxKACkYVHrsAaZ8mFVZ_wr=DcsNYNxxsS3qnR1pQ@mail.gmail.com>
Date:	Tue, 26 Apr 2016 08:12:02 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	Meelis Roos <mroos@...ux.ee>
Cc:	Andy Lutomirski <luto@...nel.org>, Ingo Molnar <mingo@...nel.org>,
	Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: Re: Bisected: spontaneous reboot in early boot on x86-64 in 4.6-rc

On Tue, Apr 26, 2016 at 12:30 AM, Meelis Roos <mroos@...ux.ee> wrote:
> Today I finished bisecting a boot problem on my IBM X346 (with 64-bit P4
> Xeons). 4.5.0 worked fine but I saw the spontaneous reboots during early
> boot in 4.6-rc4 and bisected it down to the commit below.
>
> The server does not seem to have NX - dmesg has this:
>
> Notice: NX (Execute Disable) protection missing in CPU!

I reproduced a failure under KVM, which might be your failure.
Digging around now.

--Andy