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

Jiri Slaby
2016-12-18T10:49:35Z

On 12/18/2016, 12:59 AM, Linus Torvalds wrote:
> On Sat, Dec 17, 2016 at 12:57 AM, Jiri Slaby <jslaby@suse.cz> wrote:
>>
>> Yes, disk drivers won't load:
>> [ 2.141973] virtio_pci: disagrees about version of symbol mcount
>> [ 2.144415] virtio_pci: Unknown symbol mcount (err -22)
>
> This makes no sense.
>
> mcount isn't even one of the symbols that the patch by Adam is touching.

asm-prototypes.h in his patch includes asm/ftrace.h, where the function
is declared. That should be enough IIUC scripts/Makefile.build.

> There's something else screwed up here. Not to mention that others
> don't have your issue.

I suppose people don't run i386 kernels or have different config.

> Do you have some other hacks in this area? Are you testing actual
> plain 4.9, or do you (for example) still carry Arnd's patch around
> that turned out to not work (reverted by f27c2f69cc8e in my tree)?

Not at all. This was plain 4.9 packaged by suse -- only rpm-related
fixes. I tried plain 4.9 without rpm right now with the same output:
# insmod soundcore.ko
[ 31.582326] soundcore: disagrees about version of symbol mcount
[ 31.586183] soundcore: Unknown symbol mcount (err -22)
insmod: ERROR: could not insert module soundcore.ko: Invalid parameters

$ git describe @
v4.9
$ git status
HEAD detached at v4.9

thanks,
--
js
suse labs