On 12/18/2016, 12:59 AM, Linus Torvalds wrote:

On Sat, Dec 17, 2016 at 12:57 AM, Jiri Slaby [off-list ref] wrote:

quoted

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