Re: [GIT pull] smp/hotplug: Removal of notifiers

From: Boris Ostrovsky
Date: Mon Dec 26 2016 - 15:54:50 EST

On 12/26/2016 01:21 PM, Thomas Gleixner wrote:
On Mon, 26 Dec 2016, Boris Ostrovsky wrote:
On 12/26/2016 10:45 AM, Markus Trippelsdorf wrote:
The comment in arch/x86/kernel/cpu/mcheck/mce_amd.c says:

1384 * mcheck_init_device should be inited before threshold_init_device to
1385 * initialize mce_device, otherwise a NULL ptr dereference will cause panic.

That's not changed by this commit.

My nightly test hit this as well. AMD only, Intel passed. I haven't
verified whether commit that Markus implicated is the one that caused
this but it's the same BUG signature (but possibly slightly different stack)

[ 1.554351] smpboot: CPU0: AMD Engineering Sample (family: 0x10,
model: 0x4, stepping: 0x1)

Is there anything interesting error message before the BUG hits? I'll try
to reproduce on a AMD box tomorrow.

Nothing that caught my eye. I can post it tomorrow if you are still interested.