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

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

[Arnd Bergmann]

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.

     Arnd

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

[gregkh]

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