linux-kernel - Re: commit 4dd1837d7589f468ed109556513f476e7a7f9121 breaks build

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Message-ID: <20161120113007.GS1041@n2100.armlinux.org.uk>
Date:   Sun, 20 Nov 2016 11:30:08 +0000
From:   Russell King - ARM Linux <linux@...linux.org.uk>
To:     Tobias Jakobi <tjakobi@...h.uni-bielefeld.de>
Cc:     viro@...iv.linux.org.uk,
        linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: commit 4dd1837d7589f468ed109556513f476e7a7f9121 breaks build

None of the autobuilders are finding this problem, and they build a
wide range of configurations.  Maybe it's something specific to how
you're building the kernel - can you give step by step instructions
how to reproduce this please?

On Sun, Nov 20, 2016 at 03:47:34AM +0100, Tobias Jakobi wrote:
> Hello,
> 
> this is a resend of my initial mail, see below, to Al Viro (which sadly
> was ignored).
> 
> It's rc5 now, and this issue still remains. Putting some more lists on
> the Cc now.
> 
> Reverting the commit still works for me.
> 
> 
> With best wishes,
> Tobias
> 
> ----------------
> 
> 
> Hello Al,
> 
> compiled a kernel on armv7 with torvalds/master today and getting some
> errors during the modpost phase.
> 
> > ERROR: "_set_bit" [sound/usb/snd-usbmidi-lib.ko] undefined!
> > ERROR: "_test_and_set_bit" [sound/usb/snd-usbmidi-lib.ko] undefined!
> > ERROR: "_clear_bit" [sound/usb/snd-usbmidi-lib.ko] undefined!
> > ERROR: "_test_and_clear_bit" [sound/usb/snd-usb-audio.ko] undefined!
> > ERROR: "_set_bit" [sound/usb/snd-usb-audio.ko] undefined!
> > ERROR: "_test_and_set_bit" [sound/usb/snd-usb-audio.ko] undefined!
> > ERROR: "_clear_bit" [sound/usb/snd-usb-audio.ko] undefined!
> > ERROR: "_test_and_clear_bit" [sound/core/seq/snd-seq.ko] undefined!
> <snip>
> 
> It seems like the commit 'arm: move exports to definitions' introduces
> this issue.
> 
> I quickly went over the commit and I noticed that while it removes the
> EXPORT_SYMBOL()s for the bitops from armksyms.c, it doesn't move them
> anywhere.
> 
> Maybe you can take a look at this?
> 
> With best wishes,
> Tobias
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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