Re: linux-next: build failure after merge of the aio tree
From: Sudip Mukherjee
Date: Tue Mar 15 2016 - 12:19:17 EST
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")
> This is due to a bug in the powerpc __get_user_check() macro (the return
> value is defined to be "unsigned long" which is only 32 bits on a 32
> bit platform).
m68k allmodconfig and all defs of m32r fails while building next-20160315.