[staging:staging-testing 314/401] drivers/iio/common/hid-sensors/hid-sensor-attributes.c:312: undefined reference to `__udivdi3'

Jonathan Cameron jonathan.cameron at huawei.com
Thu Sep 5 09:08:46 UTC 2019

On Wed, 4 Sep 2019 15:37:11 +0300
Andy Shevchenko <andriy.shevchenko at linux.intel.com> wrote:

> On Wed, Sep 04, 2019 at 11:33:50AM +0800, kbuild test robot wrote:
> > tree:   https://kernel.googlesource.com/pub/scm/linux/kernel/git/gregkh/staging.git staging-testing
> > head:   74eb9c06b1d722468db397595ac6834b9e4ac235
> > commit: 473d12f7638c93acbd9296a8cd455b203d5eb528 [314/401] iio: hid-sensor-attributes: Convert to use int_pow()
> > config: i386-randconfig-e004-201935 (attached as .config)
> > compiler: gcc-7 (Debian 7.4.0-11) 7.4.0
> > reproduce:
> >         git checkout 473d12f7638c93acbd9296a8cd455b203d5eb528
> >         # save the attached .config to linux build tree
> >         make ARCH=i386 
> > 
> > If you fix the issue, kindly add following tag
> > Reported-by: kbuild test robot <lkp at intel.com>
> > 
> > All errors (new ones prefixed by >>):  
> So, as far as I understood it wasn't compiled on 32-bit before, so, it's not a
> new error and thus would (has to?) be fixed separately.

I'm not convinced.  My assumption is this is triggered because the local pow_10
function was returning int whereas generic int_pow is returning an int64.
Whilst I would imagine it is fairly easy to fix, I'll not have a chance to do
so until the weekend.  Perhaps we should just revert this patch and revisit
in the next cycle?

0-day people, any idea why the iio.git/testing branch isn't getting built any
more?  I got lazy and started relying on your infrastructure and not bothering
with 32 bit local builds.  Somewhere along the way you stopped building it
and I'm afraid I didn't really notice.

Thanks for you all your hard work on 0day btw as it used to catch a lot
of stuff my local few builds didn't!


> >    ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.o: in function `adjust_exponent_nano':  
> > >> drivers/iio/common/hid-sensors/hid-sensor-attributes.c:312: undefined reference to `__udivdi3'
> > >> ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.c:314: undefined reference to `__umoddi3'
> > >> ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.c:324: undefined reference to `__udivdi3'  
> >    ld: drivers/iio/common/hid-sensors/hid-sensor-attributes.c:325: undefined reference to `__umoddi3'  

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