Re: [PATCH 5.10 00/21] 5.10.81-rc1 review

Daniel Díaz
2021-11-20T15:27:24Z

Hello!

On 11/19/21 11:37 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.81 release.
> There are 21 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 Sun, 21 Nov 2021 17:14:35 +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-5.10.81-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-5.10.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h
>
> -------------
> Pseudo-Shortlog of commits:
>
> Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Linux 5.10.81-rc1
[...]> Peter Zijlstra <peterz@infradead.org>
> x86/iopl: Fake iopl(3) CLI/STI usage
[...]

Results from Linaro's test farm.
Regressions found on x86_64 and i386, on iopl. Here's an excerpt of the selftest:

[ 0.000000] Linux version 5.10.81-rc1 (oe-user@oe-host) (x86_64-linaro-linux-gcc (GCC) 7.3.0, GNU ld (GNU Binutils) 2.30.0.20180208) #1 SMP Fri Nov 19 19:48:55 UTC 2021
[...]
[ 170.351838] traps: iopl_64[2769] attempts to use CLI/STI, pretending it's a NOP, ip:400dde in iopl_64[400000+2000]
[...]
# selftests: x86: iopl_64
# [FAIL] CLI worked
# [FAIL] STI worked
# [OK] outb to 0x80 worked
# [OK] outb to 0x80 worked
# [OK] outb to 0xed failed
# child: set IOPL to 3
# [RUN] child: write to 0x80
# [FAIL] CLI worked
# [FAIL] STI worked
# [OK] outb to 0x80 worked
# [OK] outb to 0x80 worked
# [OK] outb to 0xed failed
# [OK] Child succeeded
# [RUN] parent: write to 0x80 (should fail)
# [OK] outb to 0x80 failed
# [OK] CLI faulted
# [OK] STI faulted
# iopl(3)
# Drop privileges
# [RUN] iopl(3) unprivileged but with IOPL==3
# [RUN] iopl(0) unprivileged
# [RUN] iopl(3) unprivileged
# [OK] Failed as expected
not ok 7 selftests: x86: iopl_64 # exit=1

The baseline kernel (v5.10.80) exhibited this output:
# selftests: x86: iopl_64
# [OK] CLI faulted
# [OK] STI faulted
# [OK] outb to 0x80 worked
# [OK] outb to 0x80 worked
# [OK] outb to 0xed failed
# child: set IOPL to 3
# [RUN] child: write to 0x80
# [OK] CLI faulted
# [OK] STI faulted
# [OK] outb to 0x80 worked
# [OK] outb to 0x80 worked
# [OK] outb to 0xed failed
# [OK] Child succeeded
# [RUN] parent: write to 0x80 (should fail)
# [OK] outb to 0x80 failed
# [OK] CLI faulted
# [OK] STI faulted
# iopl(3)
# Drop privileges
# [RUN] iopl(3) unprivileged but with IOPL==3
# [RUN] iopl(0) unprivileged
# [RUN] iopl(3) unprivileged
# [OK] Failed as expected
ok 7 selftests: x86: iopl_64

## Build
* kernel: 5.10.81-rc1
* git: ['https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git', 'https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc']
* git branch: linux-5.10.y
* git commit: ed689bd1df46a07911fffa509cd06c5ec7beb9c1
* git describe: v5.10.80-22-ged689bd1df46
* test details: https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-5.10.y/build/v5.10.80-22-ged689bd1df46

## Regressions (compared to v5.10.80)
* i386, kselftest-x86
- x86.iopl_32

* qemu_x86_64, kselftest-x86
- x86.iopl_64

* x86, kselftest-x86
- x86.iopl_64

Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>

## No fixes (compared to v5.10.80)

## Test result summary
total: 91125, pass: 77560, fail: 574, skip: 12243, xfail: 748

## Build Summary
* arc: 10 total, 10 passed, 0 failed
* arm: 259 total, 259 passed, 0 failed
* arm64: 37 total, 37 passed, 0 failed
* dragonboard-410c: 1 total, 1 passed, 0 failed
* hi6220-hikey: 1 total, 1 passed, 0 failed
* i386: 36 total, 36 passed, 0 failed
* juno-r2: 1 total, 1 passed, 0 failed
* mips: 34 total, 34 passed, 0 failed
* parisc: 12 total, 12 passed, 0 failed
* powerpc: 54 total, 46 passed, 8 failed
* riscv: 24 total, 24 passed, 0 failed
* s390: 18 total, 18 passed, 0 failed
* sh: 24 total, 24 passed, 0 failed
* sparc: 12 total, 12 passed, 0 failed
* x15: 1 total, 1 passed, 0 failed
* x86: 1 total, 1 passed, 0 failed
* x86_64: 37 total, 37 passed, 0 failed

## Test suites summary
* fwts
* igt-gpu-tools
* kselftest-android
* kselftest-bpf
* kselftest-breakpoints
* kselftest-capabilities
* kselftest-cgroup
* kselftest-clone3
* kselftest-core
* kselftest-cpu-hotplug
* kselftest-cpufreq
* kselftest-drivers
* kselftest-efivarfs
* kselftest-filesystems
* kselftest-firmware
* kselftest-fpu
* kselftest-futex
* kselftest-gpio
* kselftest-intel_pstate
* kselftest-ipc
* kselftest-ir
* kselftest-kcmp
* kselftest-kexec
* kselftest-kvm
* kselftest-lib
* kselftest-livepatch
* kselftest-membarrier
* kselftest-memfd
* kselftest-memory-hotplug
* kselftest-mincore
* kselftest-mount
* kselftest-mqueue
* kselftest-net
* kselftest-netfilter
* kselftest-nsfs
* kselftest-openat2
* kselftest-pid_namespace
* kselftest-pidfd
* kselftest-proc
* kselftest-pstore
* kselftest-ptrace
* kselftest-rseq
* kselftest-rtc
* kselftest-seccomp
* kselftest-sigaltstack
* kselftest-size
* kselftest-splice
* kselftest-static_keys
* kselftest-sync
* kselftest-sysctl
* kselftest-tc-testing
* kselftest-timens
* kselftest-timers
* kselftest-tmpfs
* kselftest-tpm2
* kselftest-user
* kselftest-vm
* kselftest-x86
* kselftest-zram
* kunit
* kvm-unit-tests
* libgpiod
* libhugetlbfs
* linux-log-parser
* ltp-cap_bounds-tests
* ltp-commands-tests
* ltp-containers-tests
* ltp-controllers-tests
* ltp-cpuhotplug-tests
* ltp-crypto-tests
* ltp-cve-tests
* ltp-dio-tests
* ltp-fcntl-locktests-tests
* ltp-filecaps-tests
* ltp-fs-tests
* ltp-fs_bind-tests
* ltp-fs_perms_simple-tests
* ltp-fsx-tests
* ltp-hugetlb-tests
* ltp-io-tests
* ltp-ipc-tests
* ltp-math-tests
* ltp-mm-tests
* ltp-nptl-tests
* ltp-open-posix-tests
* ltp-pty-tests
* ltp-sched-tests
* ltp-securebits-tests
* ltp-syscalls-tests
* ltp-tracing-tests
* network-basic-tests
* packetdrill
* perf
* rcutorture
* ssuite
* v4l2-compliance

Greetings!

Daniel Díaz
daniel.diaz@linaro.org

--
Linaro LKFT