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    SubjectRe: [PATCH 4.19 000/306] 4.19.87-stable review
    On Wed, Nov 27, 2019 at 06:27:55PM -0600, Daniel Díaz wrote:
    > Hello!
    >
    >
    > On Wed, 27 Nov 2019 at 14:55, Greg Kroah-Hartman
    > <gregkh@linuxfoundation.org> wrote:
    > > This is the start of the stable review cycle for the 4.19.87 release.
    > > There are 306 patches in this series, all will be posted as a response
    > > to this one. If anyone has any issues with these being applied, please
    > > let me know.
    > >
    > > Responses should be made by Fri, 29 Nov 2019 20:18:09 +0000.
    > > Anything received after that time might be too late.
    > >
    > > The whole patch series can be found in one patch at:
    > > https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.19.87-rc1.gz
    > > or in the git tree and branch at:
    > > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.19.y
    > > and the diffstat can be found below.
    > >
    > > thanks,
    > >
    > > greg k-h
    >
    > We're seeing this build failure on 4.19 (and 4.14) on x86 32-bits:
    > > In file included from /srv/oe/build/tmp-lkft-glibc/work-shared/intel-core2-32/kernel-source/include/linux/export.h:45:0,
    > > from /srv/oe/build/tmp-lkft-glibc/work-shared/intel-core2-32/kernel-source/include/linux/linkage.h:7,
    > > from /srv/oe/build/tmp-lkft-glibc/work-shared/intel-core2-32/kernel-source/include/linux/preempt.h:10,
    > > from /srv/oe/build/tmp-lkft-glibc/work-shared/intel-core2-32/kernel-source/include/linux/spinlock.h:51,
    > > from /srv/oe/build/tmp-lkft-glibc/work-shared/intel-core2-32/kernel-source/arch/x86/mm/cpu_entry_area.c:3:
    > > In function 'setup_cpu_entry_area_ptes',
    > > inlined from 'setup_cpu_entry_areas' at /srv/oe/build/tmp-lkft-glibc/work-shared/intel-core2-32/kernel-source/arch/x86/mm/cpu_entry_area.c:209:2:
    > > /srv/oe/build/tmp-lkft-glibc/work-shared/intel-core2-32/kernel-source/include/linux/compiler.h:348:38: error: call to '__compiletime_assert_192' declared with attribute error: BUILD_BUG_ON failed: (CPU_ENTRY_AREA_PAGES+1)*PAGE_SIZE != CPU_ENTRY_AREA_MAP_SIZE
    > > _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
    > > ^
    > > /srv/oe/build/tmp-lkft-glibc/work-shared/intel-core2-32/kernel-source/include/linux/compiler.h:329:4: note: in definition of macro '__compiletime_assert'
    > > prefix ## suffix(); \
    > > ^~~~~~
    > > /srv/oe/build/tmp-lkft-glibc/work-shared/intel-core2-32/kernel-source/include/linux/compiler.h:348:2: note: in expansion of macro '_compiletime_assert'
    > > _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
    > > ^~~~~~~~~~~~~~~~~~~
    > > /srv/oe/build/tmp-lkft-glibc/work-shared/intel-core2-32/kernel-source/include/linux/build_bug.h:45:37: note: in expansion of macro 'compiletime_assert'
    > > #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
    > > ^~~~~~~~~~~~~~~~~~
    > > /srv/oe/build/tmp-lkft-glibc/work-shared/intel-core2-32/kernel-source/include/linux/build_bug.h:69:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
    > > BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
    > > ^~~~~~~~~~~~~~~~
    > > /srv/oe/build/tmp-lkft-glibc/work-shared/intel-core2-32/kernel-source/arch/x86/mm/cpu_entry_area.c:192:2: note: in expansion of macro 'BUILD_BUG_ON'
    > > BUILD_BUG_ON((CPU_ENTRY_AREA_PAGES+1)*PAGE_SIZE != CPU_ENTRY_AREA_MAP_SIZE);
    > > ^~~~~~~~~~~~
    >
    > Bisection points to "x86/cpu_entry_area: Add guard page for entry
    > stack on 32bit" (e50622b4a1, also present in 4.14.y as 880a98c339).

    Ugh, I was hoping that 32bit stuff "just worked". I'll take a look at
    the whole series later today and try to work to backport some of the
    known-missing parts of that series.

    thanks,

    greg k-h

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