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Re: [GIT PULL] kbuild changes for v4.9-rc1

From Kalle Valo <kvalo@codeaurora.org>
Newsgroups linux.kernel
Subject Re: [GIT PULL] kbuild changes for v4.9-rc1
Date 2016-10-27 16:20 +0200
Message-ID <swTnR-2Bn-113@gated-at.bofh.it> (permalink)
References (1 earlier) <stfdf-3r0-7@gated-at.bofh.it> <stqim-2Hw-19@gated-at.bofh.it> <strxL-3nR-3@gated-at.bofh.it> <su0c9-2v4-15@gated-at.bofh.it> <sucGl-28N-9@gated-at.bofh.it>
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(Adding Thorsten because of a serious regression and Steven because he
tried to fix something in the same commit)

Nicholas Piggin <npiggin@gmail.com> writes:

> On Wed, 19 Oct 2016 16:38:14 +0200
> Michal Marek <mmarek@suse.com> wrote:
>
>> Dne 18.10.2016 v 03:34 Nicholas Piggin napsal(a):
>> > We should probably just bring all these arch patches through the
>> > kbuild tree.
>> > 
>> > I'm sorry for the breakage: I didn't realize it broke the build with
>> > some configs, otherwise I would have given Michal a heads up before
>> > his pull request, and worked to get this stuff in first.  
>> 
>> It breaks with some binutils versions only (and only with
>> CONFIG_MODVERSIONS=y, of course).
>
> Yeah this seems to be the issue, it apparently slipped past all the
> automated builds. It seems like the existing CRC warnings in the tree
> only trigger in rare circumstances too, so something could be a bit
> fragile there.

I upgraded from 4.8 to 4.9-rc2 and noticed that kernel modules fail to
load (log below). After investigating for some time I found this thread
and apparently this is not still fixed, at least not in Linus' tree.

Reverting 784d5699eddc5 fixed the issue for me. As I don't see any fix
available (please correct me if I'm wrong) we should just revert that
commit until it's properly fixed.

Also note that there's a related fix from Steven:

[PATCH] x86: Fix export for mcount and __fentry__
https://marc.info/?l=linux-kernel&m=147733572502413

For compiling the kernel I'm using Ubuntu 12.04:

ii  binutils             2.22-6ubuntu1.4      GNU assembler, linker and binary utilities
ii  gcc                  4:4.6.3-1ubuntu5     GNU C compiler

The kernel is running on a separate machine with Ubuntu 14.04.

[  110.703414] bluetooth: disagrees about version of symbol __get_user_2
[  110.703416] bluetooth: Unknown symbol __get_user_2 (err -22)
[  110.703429] bluetooth: disagrees about version of symbol __put_user_2
[  110.703430] bluetooth: Unknown symbol __put_user_2 (err -22)
[  110.703579] bluetooth: disagrees about version of symbol __put_user_4
[  110.703580] bluetooth: Unknown symbol __put_user_4 (err -22)
[  110.703669] bluetooth: disagrees about version of symbol __put_user_1
[  110.703670] bluetooth: Unknown symbol __put_user_1 (err -22)
[  110.703688] bluetooth: disagrees about version of symbol mcount
[  110.703689] bluetooth: Unknown symbol mcount (err -22)

-- 
Kalle Valo

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Thread

Re: [GIT PULL] kbuild changes for v4.9-rc1 Nicholas Piggin <npiggin@gmail.com> - 2016-10-17 09:10 +0200
  Re: [GIT PULL] kbuild changes for v4.9-rc1 Adam Borowski <kilobyte@angband.pl> - 2016-10-17 12:10 +0200
    Re: [GIT PULL] kbuild changes for v4.9-rc1 Geert Uytterhoeven <geert@linux-m68k.org> - 2016-10-17 13:20 +0200
      Re: [GIT PULL] kbuild changes for v4.9-rc1 Alexey Dobriyan <adobriyan@gmail.com> - 2016-10-17 13:40 +0200
    Re: [GIT PULL] kbuild changes for v4.9-rc1 Alexey Dobriyan <adobriyan@gmail.com> - 2016-10-17 13:20 +0200
    Re: [GIT PULL] kbuild changes for v4.9-rc1 Mathieu OTHACEHE <m.othacehe@gmail.com> - 2016-10-17 14:30 +0200
      Re: [GIT PULL] kbuild changes for v4.9-rc1 Adam Borowski <kilobyte@angband.pl> - 2016-10-18 02:20 +0200
        Re: [GIT PULL] kbuild changes for v4.9-rc1 Nicholas Piggin <npiggin@gmail.com> - 2016-10-18 03:40 +0200
          Re: [GIT PULL] kbuild changes for v4.9-rc1 Michal Marek <mmarek@suse.com> - 2016-10-19 16:40 +0200
            Re: [GIT PULL] kbuild changes for v4.9-rc1 Nicholas Piggin <npiggin@gmail.com> - 2016-10-20 06:00 +0200
              Re: [GIT PULL] kbuild changes for v4.9-rc1 Kalle Valo <kvalo@codeaurora.org> - 2016-10-27 16:00 +0200
                Re: [GIT PULL] kbuild changes for v4.9-rc1 Nicholas Piggin <npiggin@gmail.com> - 2016-10-27 16:40 +0200
              Re: [GIT PULL] kbuild changes for v4.9-rc1 Kalle Valo <kvalo@codeaurora.org> - 2016-10-27 16:20 +0200
                Re: [GIT PULL] kbuild changes for v4.9-rc1 Nicholas Piggin <npiggin@gmail.com> - 2016-10-27 17:00 +0200
                Re: [GIT PULL] kbuild changes for v4.9-rc1 Thorsten Leemhuis <regressions@leemhuis.info> - 2016-10-30 12:00 +0100
          Re: [GIT PULL] kbuild changes for v4.9-rc1 Michal Marek <mmarek@suse.com> - 2016-11-01 16:50 +0100
            Re: [GIT PULL] kbuild changes for v4.9-rc1 Adam Borowski <kilobyte@angband.pl> - 2016-11-02 13:20 +0100
              [PATCH] kbuild: provide include/asm/asm-prototypes.h for x86 Adam Borowski <kilobyte@angband.pl> - 2016-11-02 13:20 +0100
  [PATCH] kbuild: provide include/asm/asm-prototypes.h for ARM Arnd Bergmann <arnd@arndb.de> - 2016-10-17 14:30 +0200
    Re: [PATCH] kbuild: provide include/asm/asm-prototypes.h for ARM Michal Marek <mmarek@suse.com> - 2016-10-19 17:00 +0200
      Re: [PATCH] kbuild: provide include/asm/asm-prototypes.h for ARM Arnd Bergmann <arnd@arndb.de> - 2016-10-19 17:10 +0200
        Re: [PATCH] kbuild: provide include/asm/asm-prototypes.h for ARM Russell King - ARM Linux <linux@armlinux.org.uk> - 2016-10-19 17:40 +0200
          Re: [PATCH] kbuild: provide include/asm/asm-prototypes.h for ARM Nicholas Piggin <npiggin@gmail.com> - 2016-10-20 06:20 +0200
            Re: [PATCH] kbuild: provide include/asm/asm-prototypes.h for ARM Russell King - ARM Linux <linux@armlinux.org.uk> - 2016-10-20 15:30 +0200
              Re: [PATCH] kbuild: provide include/asm/asm-prototypes.h for ARM Nicholas Piggin <npiggin@gmail.com> - 2016-10-20 16:30 +0200
                Re: [PATCH] kbuild: provide include/asm/asm-prototypes.h for ARM Russell King - ARM Linux <linux@armlinux.org.uk> - 2016-10-20 16:40 +0200
                Re: [PATCH] kbuild: provide include/asm/asm-prototypes.h for ARM Nicholas Piggin <npiggin@gmail.com> - 2016-10-20 17:00 +0200
                Re: [PATCH] kbuild: provide include/asm/asm-prototypes.h for ARM Michal Marek <mmarek@suse.com> - 2016-10-22 22:00 +0200
            [PATCH 2/2, variant A] ARM: add hidden mmioset/mmiocpy prototypes Arnd Bergmann <arnd@arndb.de> - 2016-10-24 17:10 +0200
            [PATCH 2/2, variant B] ARM: move mmiocpy/mmioset exports to io.c Arnd Bergmann <arnd@arndb.de> - 2016-10-24 17:10 +0200
            [PATCH 1/2] kbuild: provide include/asm/asm-prototypes.h for ARM Arnd Bergmann <arnd@arndb.de> - 2016-10-24 17:10 +0200
              Re: [PATCH 1/2] kbuild: provide include/asm/asm-prototypes.h for  ARM Nicholas Piggin <npiggin@gmail.com> - 2016-10-25 10:40 +0200
            Re: [PATCH] kbuild: provide include/asm/asm-prototypes.h for ARM Arnd Bergmann <arnd@arndb.de> - 2016-10-24 17:10 +0200
          Re: [PATCH] kbuild: provide include/asm/asm-prototypes.h for ARM Geert Uytterhoeven <geert@linux-m68k.org> - 2016-10-20 09:40 +0200
            Re: [PATCH] kbuild: provide include/asm/asm-prototypes.h for ARM Russell King - ARM Linux <linux@armlinux.org.uk> - 2016-10-20 10:30 +0200
              Re: [PATCH] kbuild: provide include/asm/asm-prototypes.h for ARM Geert Uytterhoeven <geert@linux-m68k.org> - 2016-10-20 10:30 +0200

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