linux-kernel - Re: 'kbuild' merge before 4.9-rc1 breaks build and boot

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Message-ID: <alpine.DEB.2.20.1611071408040.24418@macbook-air>
Date:   Mon, 7 Nov 2016 14:10:12 -0500 (EST)
From:   Vince Weaver <vincent.weaver@...ne.edu>
To:     Peter Wu <peter@...ensteyn.nl>
cc:     Michal Marek <mmarek@...e.com>, Al Viro <viro@...iv.linux.org.uk>,
        Oliver Hartkopp <socketcan@...tkopp.net>,
        linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org
Subject: Re: 'kbuild' merge before 4.9-rc1 breaks build and boot

On Thu, 27 Oct 2016, Peter Wu wrote:

> I can confirm Olivers issue, the current mainline kernel fails to boot
> on kernels with CONFIG_MODVERSIONS=y. Bisection points to:
> 
>     commit 784d5699eddc55878627da20d3fe0c8542e2f1a2
>     Author: Al Viro <viro@...iv.linux.org.uk>
>     Date:   Mon Jan 11 11:04:34 2016 -0500
> > WARNING: "memset" [sound/usb/snd-usbmidi-lib.ko] has no CRC!
> > WARNING: "__fentry__" [sound/usb/snd-usbmidi-lib.ko] has no CRC!
> > WARNING: "memcpy" [sound/usb/snd-usbmidi-lib.ko] has no CRC!
> > WARNING: "__sw_hweight32" [sound/usb/snd-usbmidi-lib.ko] has no CRC!

Has any progress been made with this problem?

I'm also encountering it on my debian-unstable box on any kernel more 
recent than 4.9-rc1 (up to and including 4.9-rc4).  I am glad someone 
managed to isolate it as I was unable to get a clean bisect.

Vince