Re: [PATCH 5.4 00/60] 5.4.27-rc1 review

[Naresh Kamboju]

On Thu, 19 Mar 2020 at 18:52, Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
>
> This is the start of the stable review cycle for the 5.4.27 release.
> There are 60 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 Sat, 21 Mar 2020 12:37:04 +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/v5.x/stable-review/patch-5.4.27-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-5.4.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h

Results from Linaroâs test farm.
This regression is platform specific.

On arm64 dragonboard 410c-QC410E* the LT hugemmap05 and
hackbench test cases started failing on this build and easy to reproduce.
Where as on other arm64 platforms (juno-r2, nxp-ls2088) these test PASS.

These two test case scenario run on independent execution.

Steps to reproduce,
cd /opt/ltp
./runltp -s hugemmap05

cd /opt/ltp/testcases/bin
./hackbench 50 process 1000
./hackbench 20 thread 1000

Test output log:
--------------------
hugemmap05.c:89: BROK: mmap((nil),402653184,3,1,6,0) failed: ENOMEM (12)
tst_safe_sysv_ipc.c:99: BROK: hugemmap05.c:85: shmget(218431587,
402653184, b80) failed: ENOMEM (12)

Running with 50*40 (== 2000) tasks.
fork() (error: Resource temporarily unavailable)
Running with 20*40 (== 800) tasks.
pthread_create failed: Resource temporarily unavailable (11)


*
RAM: 1GB LPDDR3 SDRAM @ 533MHz
CPU: ARM Cortex-A53 Quad-core up to 1.2 GHz per core

https://qa-reports.linaro.org/lkft/linux-stable-rc-5.4-oe/tests/ltp-hugetlb-tests/hugemmap05
https://qa-reports.linaro.org/lkft/linux-stable-rc-5.4-oe/tests/ltp-sched-tests/hackbench01
https://qa-reports.linaro.org/lkft/linux-stable-rc-5.4-oe/tests/ltp-sched-tests/hackbench02


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