Re: [PATCH 4.9 00/43] 4.9.310-rc1 review

[Naresh Kamboju]

On Wed, 6 Apr 2022 at 23:57, Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
>
> This is the start of the stable review cycle for the 4.9.310 release.
> There are 43 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, 08 Apr 2022 18:24:27 +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-4.9.310-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-4.9.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h

Results from Linaro’s test farm.

As Guenter reported,
On stable-rc 4.9 arm64 build configs allnoconfig and tinyconfig failed [1].

## Build
* kernel: 4.9.310-rc1
* git: https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc
* git branch: linux-4.9.y
* git commit: b5f0e9d665c30ceb3bee566518a1020e54d7bc1f
* git describe: v4.9.309-44-gb5f0e9d665c3
* test details:
https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-4.9.y-sanity/build/v4.9.309-44-gb5f0e9d665c3

## Test Regressions (compared to v4.9.309-163-geeae539a0d5c)
* arm64, build
  - arm64-clang-11-allnoconfig
  - arm64-clang-11-tinyconfig
  - arm64-clang-12-allnoconfig
  - arm64-clang-12-tinyconfig
  - arm64-clang-13-allnoconfig
  - arm64-clang-13-tinyconfig
  - arm64-clang-nightly-allnoconfig
  - arm64-clang-nightly-tinyconfig
  - arm64-gcc-10-allnoconfig
  - arm64-gcc-10-tinyconfig
  - arm64-gcc-11-allnoconfig
  - arm64-gcc-11-tinyconfig
  - arm64-gcc-8-allnoconfig
  - arm64-gcc-8-tinyconfig
  - arm64-gcc-9-allnoconfig
  - arm64-gcc-9-tinyconfig


Build error:
------------

arch/arm64/kernel/cpu_errata.c: In function 'is_spectrev2_safe':
arch/arm64/kernel/cpu_errata.c:829:39: error:
'arm64_bp_harden_smccc_cpus' undeclared (first use in this function);
did you mean 'arm64_bp_harden_el1_vectors'?
  829 |                                       arm64_bp_harden_smccc_cpus);
      |                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~
      |                                       arm64_bp_harden_el1_vectors
arch/arm64/kernel/cpu_errata.c:829:39: note: each undeclared
identifier is reported only once for each function it appears in
arch/arm64/kernel/cpu_errata.c: In function 'spectre_bhb_enable_mitigation':
arch/arm64/kernel/cpu_errata.c:839:39: error: '__hardenbp_enab'
undeclared (first use in this function)
  839 |         if (!is_spectrev2_safe() &&  !__hardenbp_enab) {
      |                                       ^~~~~~~~~~~~~~~
In file included from include/asm-generic/percpu.h:6,
                 from arch/arm64/include/asm/percpu.h:279,
                 from include/linux/percpu.h:12,
                 from arch/arm64/include/asm/mmu.h:23,
                 from include/linux/mm_types.h:17,
                 from include/linux/sched.h:27,
                 from include/linux/ratelimit.h:5,
                 from include/linux/device.h:27,
                 from include/linux/node.h:17,
                 from include/linux/cpu.h:16,
                 from arch/arm64/include/asm/cpu.h:19,
                 from arch/arm64/kernel/cpu_errata.c:23:
arch/arm64/kernel/cpu_errata.c:879:42: error: 'bp_hardening_data'
undeclared (first use in this function)
  879 |                         __this_cpu_write(bp_hardening_data.fn, NULL);
      |                                          ^~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:236:54: note: in definition of macro
'__verify_pcpu_ptr'
  236 |         const void __percpu *__vpp_verify = (typeof((ptr) +
0))NULL;    \
      |                                                      ^~~
include/linux/percpu-defs.h:438:41: note: in expansion of macro
'__pcpu_size_call'
  438 | #define raw_cpu_write(pcp, val)
__pcpu_size_call(raw_cpu_write_, pcp, val)
      |                                         ^~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:469:9: note: in expansion of macro 'raw_cpu_write'
  469 |         raw_cpu_write(pcp, val);
         \
      |         ^~~~~~~~~~~~~
arch/arm64/kernel/cpu_errata.c:879:25: note: in expansion of macro
'__this_cpu_write'
  879 |                         __this_cpu_write(bp_hardening_data.fn, NULL);
      |                         ^~~~~~~~~~~~~~~~
make[2]: *** [scripts/Makefile.build:307:
arch/arm64/kernel/cpu_errata.o] Error 1


Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>

steps to reproduce:

# To install tuxmake on your system globally:
# sudo pip3 install -U tuxmake

 tuxmake --runtime podman --target-arch arm64 --toolchain gcc-11
--kconfig tinyconfig


--
Linaro LKFT
https://lkft.linaro.org

[1] https://builds.tuxbuild.com/27R7yjNqw1ahQiOJ16BgcTn7BcZ/