Re: stable-rc/linux-3.18.y build: 170 builds: 4 failed, 166 passed, 4 errors (v3.18.73-36-ge7bfc3a7bb75)

[gregkh <gregkh@linuxfoundation.org>]

On Fri, Oct 06, 2017 at 11:01:36PM +0200, Arnd Bergmann wrote:
> On Fri, Oct 6, 2017 at 9:50 PM, kernelci.org bot <bot@kernelci.org> wrote:
> >
> > stable-rc/linux-3.18.y build: 170 builds: 4 failed, 166 passed, 4 errors (v3.18.73-36-ge7bfc3a7bb75)
> > Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-3.18.y/kernel/v3.18.73-36-ge7bfc3a7bb75/
> > Tree: stable-rc
> > Branch: linux-3.18.y
> > Git Describe: v3.18.73-36-ge7bfc3a7bb75
> > Git Commit: e7bfc3a7bb7560487107d3572dc67f8e762acbaf
> > Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
> > Built: 4 unique architectures
> >
> > Build Failures Detected:
> >
> > mips: gcc version 6.3.0 (GCC)
> > ar7_defconfig FAIL
> > lemote2f_defconfig FAIL
> > loongson3_defconfig FAIL
> > nlm_xlr_defconfig FAIL
> >
> > Errors:
> > arch/mips/kernel/setup.c:588:7: error: implicit declaration of function 'memory_region_available' [-Werror=implicit-function-declaration]
> 
> This is caused by c3628230f90f ("MIPS: kexec: Do not reserve
> invalid crashkernel memory on boot"), upstream c3628230f90f3.
> 
> The memory_region_available() function was introduced in linux-4.11
> by commit d9b5b658210f ("MIPS: init: Ensure bootmem does not
> corrupt reserved memory"), but this patch has not been backported
> to stable kernels yet.
> 
> Right now, the stable-rc trees for 3.18 and 4.9 both have this
> problem, while 4.4 doesn't have a backport of c3628230f90f3
> (yet).
> 
> I suppose we either want to have both patches in all stable kernels,
> or drop the c3628230f90f3 backport. Marcin Nowakowski might
> be able to offer some more insight, as he wrote both patches as part
> of a longer patch series. There might be other patches from that
> series that qualify for backports.

Thanks for letting me know, I've now just dropped the MIPS patch from
the trees.

greg k-h