Re: [linux-stable-rc:linux-4.9.y 9986/9999] ptrace.c:undefined reference to `abort'

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Sat, Jul 06, 2019 at 12:08:59AM +0800, kbuild test robot wrote:
> tree:   https://kernel.googlesource.com/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.9.y
> head:   af13e6db0db43996e060d2b9ca57f60b09d08cb8
> commit: 273b0e9d8a3e0970fab8ad1b037adf9e3a9fc63b [9986/9999] bug.h: work around GCC PR82365 in BUG()
> config: arc-defconfig (attached as .config)
> compiler: arc-elf-gcc (GCC) 7.4.0
> reproduce:
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         git checkout 273b0e9d8a3e0970fab8ad1b037adf9e3a9fc63b
>         # save the attached .config to linux build tree
>         GCC_VERSION=7.4.0 make.cross ARCH=arc 
> 
> If you fix the issue, kindly add following tag
> Reported-by: kbuild test robot <lkp@intel.com>
> 
> All errors (new ones prefixed by >>):
> 
>    arch/arc/built-in.o: In function `genregs_set':
> >> ptrace.c:(.text+0x9bc): undefined reference to `abort'
> >> ptrace.c:(.text+0x9bc): undefined reference to `abort'
>    arch/arc/built-in.o: In function `genregs_get':
>    ptrace.c:(.text+0x2de8): undefined reference to `abort'
>    ptrace.c:(.text+0x2de8): undefined reference to `abort'
>    arch/arc/built-in.o: In function `arc_pmu_device_probe':
> >> perf_event.c:(.text+0x99e6): undefined reference to `abort'
>    arch/arc/built-in.o:perf_event.c:(.text+0x99e6): more undefined references to `abort' follow

I've queued up af1be2e21203 ("ARC: handle gcc generated __builtin_trap
for older compiler") to hopefully resolve this now.

thanks,

greg k-h