Re: linux-next: build failure after merge of the aio tree

[Andy Shevchenko]

On Wed, Mar 16, 2016 at 12:02 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote:
> On Tuesday 15 March 2016 12:22:28 Benjamin LaHaise wrote:
>> On Tue, Mar 15, 2016 at 04:19:02PM +0000, Sudip Mukherjee wrote:
>> > On Tue, Mar 15, 2016 at 05:46:34PM +1100, Stephen Rothwell wrote:
>> > > Hi Benjamin,
>> > >
>> > > After merging the aio tree, today's linux-next build (powerpc
>> > > ppc44x_defconfig) failed like this:
>> > >
>> > > fs/built-in.o: In function `aio_thread_op_foo_at':
>> > > aio.c:(.text+0x4dab4): undefined reference to `__get_user_bad'
>> > > aio.c:(.text+0x4daec): undefined reference to `__get_user_bad'
>> > >
>> > > Caused by commit
>> > >
>> > >   150a0b4905f1 ("aio: add support for async openat()")
>> > >
>> > > despite commit
>> > >
>> > >   d2f7a973e11e ("aio: don't use __get_user() for 64 bit values")
>> > >

>> I've removed everything from the aio-next.git tree for now.  Will revisit
>> after the merge window.

I think it is the best solution right now.

> I've also sent a patch that fixes the link error on ARM and that should
> work on all other architectures too.

In case of avr32 signalfd_read() fails. Does your patch help with it as well?

P.S. Bisecting shows same culprit: 150a0b4905f1 ("aio: add support for
async openat()")

-- 
With Best Regards,
Andy Shevchenko