Re: [PATCH 6.1 000/167] 6.1.136-rc1 review

All the clang-nightly issues seem like bugs in clang. I would say only the build error on S390 is a kernel issue.

regards, dan carpenter

On Wed, Apr 30, 2025 at 04:09:18PM +0530, Naresh Kamboju wrote:

On Tue, 29 Apr 2025 at 23:31, Greg Kroah-Hartman gregkh@linuxfoundation.org wrote:

...

This is the start of the stable review cycle for the 6.1.136 release. There are 167 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 Thu, 01 May 2025 16:10:15 +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/v6.x/stable-review/patch-6.1.136-rc1... or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.1.y and the diffstat can be found below.

thanks,

greg k-h

There are three build regressions and two build warnings.

Regressions on x86_64 with defconfig builds with clang-nightly toolchain on the stable-rc 6.1.136-rc1.

• x86_64, build
  • clang-nightly-lkftconfig
  • clang-nightly-x86_64_defconfig

Regression Analysis:

• New regression? Yes
• Reproducibility? Yes

Build regression: x86_64 clang-nightly net ip.h error default initialization of an object of type 'typeof (rt->dst.expires)'

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

## Build error x86_64 include/net/ip.h:462:14: error: default initialization of an object of type 'typeof (rt->dst.expires)' (aka 'const unsigned long') leaves the object uninitialized and is incompatible with C++ [-Werror,-Wdefault-const-init-unsafe] 462 | if (mtu && time_before(jiffies, rt->dst.expires)) | ^

## Build x86_64

• Build log: https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.13...
• Build history:

https://qa-reports.linaro.org/lkft/linux-stale-rc-linux-6.1.y/build/v6.1.134...

• Build details:

https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.13...

• Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/2wPjfmTxuT4qMCUSSj4Zw...
• Kernel config:

https://storage.tuxsuite.com/public/linaro/lkft/builds/2wPjfmTxuT4qMCUSSj4Zw...

• Toolchain: Debian clang version 21.0.0

(++20250428112741+e086d7b1464a-1~exp1~20250428112923.1416)

Regressions on s390 with defconfig builds with gcc-13, gcc-8 and clang-20 and clang-nightly toolchains on the stable-rc 6.1.136-rc1.

• s390, build
  • clang-20-defconfig
  • clang-nightly-defconfig
  • gcc-13-allmodconfig
  • gcc-13-defconfig
  • gcc-8-defconfig-fe40093d

Regression Analysis:

• New regression? Yes
• Reproducibility? Yes

Build regression: s390 pci_report.c fatal error linux sprintf.h No such file or directory

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

## Build error S390 arch/s390/pci/pci_report.c:14:10: fatal error: linux/sprintf.h: No such file or directory 14 | #include <linux/sprintf.h> | ^~~~~~~~~~~~~~~~~ compilation terminated. arch/s390/pci/pci_fixup.c: In function 'zpci_ism_bar_no_mmap': arch/s390/pci/pci_fixup.c:19:13: error: 'struct pci_dev' has no member named 'non_mappable_bars' 19 | pdev->non_mappable_bars = 1; | ^~ drivers/s390/virtio/virtio_ccw.c:88:9: error: unknown type name 'dma64_t' 88 | dma64_t queue; | ^~~~~~~ drivers/s390/virtio/virtio_ccw.c:95:9: error: unknown type name 'dma64_t' 95 | dma64_t desc; | ^~~~~~~ drivers/s390/virtio/virtio_ccw.c:99:9: error: unknown type name 'dma64_t' 99 | dma64_t avail; | ^~~~~~~ drivers/s390/virtio/virtio_ccw.c:100:9: error: unknown type name 'dma64_t' 100 | dma64_t used; | ^~~~~~~ drivers/s390/virtio/virtio_ccw.c:109:9: error: unknown type name 'dma64_t' 109 | dma64_t summary_indicator; | ^~~~~~~ drivers/s390/virtio/virtio_ccw.c:110:9: error: unknown type name 'dma64_t' 110 | dma64_t indicator; | ^~~~~~~ drivers/s390/virtio/virtio_ccw.c: In function 'virtio_ccw_drop_indicator': drivers/s390/virtio/virtio_ccw.c:370:25: error: implicit declaration of function 'virt_to_dma64'; did you mean 'virt_to_page'? [-Werror=implicit-function-declaration] 370 | virt_to_dma64(get_summary_indicator(airq_info)); | ^~~~~~~~~~~~~ | virt_to_page drivers/s390/virtio/virtio_ccw.c:374:28: error: implicit declaration of function 'virt_to_dma32'; did you mean 'virt_to_page'? [-Werror=implicit-function-declaration] 374 | ccw->cda = virt_to_dma32(thinint_area); | ^~~~~~~~~~~~~ | virt_to_page drivers/s390/virtio/virtio_ccw.c: In function 'virtio_ccw_setup_vq': drivers/s390/virtio/virtio_ccw.c:552:45: error: implicit declaration of function 'u64_to_dma64' [-Werror=implicit-function-declaration] 552 | info->info_block->l.queue = u64_to_dma64(queue); | ^~~~~~~~~~~~ drivers/s390/virtio/virtio_ccw.c: In function 'virtio_ccw_find_vqs': drivers/s390/virtio/virtio_ccw.c:654:9: error: unknown type name 'dma64_t' 654 | dma64_t *indicatorp = NULL; | ^~~~~~~ cc1: some warnings being treated as errors

## Build s390

• Build log: https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.13...
• Build history:

https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.13...

• Build details:

https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.13...

• Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/2wPjfcqRiiDhTc38knEJ0...
• Kernel config:

https://storage.tuxsuite.com/public/linaro/lkft/builds/2wPjfcqRiiDhTc38knEJ0...

• Toolchain: Debian clang version 21.0.0

(++20250428112741+e086d7b1464a-1~exp1~20250428112923.1416)

Regressions on mips with defconfig builds with clang-nightly toolchains on the stable-rc 6.1.136-rc1.

• mips, build
  • clang-nightly-allnoconfig
  • clang-nightly-defconfig
  • clang-nightly-tinyconfig

Regression Analysis:

• New regression? Yes
• Reproducibility? Yes

Build regression: mips kernel branch.c error default initialization of an object of type union

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

## Build error mips arch/mips/kernel/branch.c:35:6: error: default initialization of an object of type 'union (unnamed union at arch/mips/kernel/branch.c:35:6)' with const member leaves the object uninitialized and is incompatible with C++ [-Werror,-Wdefault-const-init-unsafe] 35 | if (__get_user(inst, (u16 __user *) msk_isa16_mode(epc))) { | ^

## Build mips

• Build log: https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.13...
• Build history:

https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.13...

• Build details:

https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.13...

• Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/2wPjfMHLLGL9OjZrjKvW9...
• Kernel config:

https://storage.tuxsuite.com/public/linaro/lkft/builds/2wPjfMHLLGL9OjZrjKvW9...

## Build warnings

a) Build warnings on x86_64 builds. io_uring/timeout.c:410:31: warning: default initialization of an object of type 'typeof ((sqe->addr2))' (aka 'const unsigned long long') leaves the object uninitialized and is incompatible with C++ [-Wdefault-const-init-unsafe] 410 | if (get_timespec64(&tr->ts, u64_to_user_ptr(sqe->addr2))) | ^

Links:

• https://storage.tuxsuite.com/public/linaro/lkft/builds/2wPjeiV7BNYgKZ2oXuK3B...

b) Build warnings on arm with clang-nightly with tinyconfig.

clang: warning: argument unused during compilation: '-march=armv7-m' [-Wunused-command-line-argument] kernel/params.c:367:22: warning: default initialization of an object of type 'struct kernel_param' with const member leaves the object uninitialized and is incompatible with C++ [-Wdefault-const-init-unsafe] 367 | struct kernel_param dummy; | ^ include/linux/moduleparam.h:73:12: note: member 'perm' declared 'const' here 73 | const u16 perm; | ^ kernel/params.c:423:22: warning: default initialization of an object of type 'struct kernel_param' with const member leaves the object uninitialized and is incompatible with C++ [-Wdefault-const-init-unsafe] 423 | struct kernel_param kp; | ^ include/linux/moduleparam.h:73:12: note: member 'perm' declared 'const' here 73 | const u16 perm; | ^ 2 warnings generated.

Links:

• https://storage.tuxsuite.com/public/linaro/lkft/builds/2wPjeaX1oyIaa7F0nsdW1...

## Build

• kernel: 6.1.136-rc1
• git: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
• git commit: 961a5173f29d2aa1f2c87ff9612b029c46086972
• git describe: v6.1.134-461-g961a5173f29d
• test details:

https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.13...

## Test Regressions (compared to v6.1.134-292-gb8b5da130779)

• i386, build

  • clang-nightly-defconfig
  • clang-nightly-lkftconfig

• mips, build

  • clang-nightly-allnoconfig
  • clang-nightly-defconfig
  • clang-nightly-tinyconfig

• s390, build

  • clang-20-defconfig
  • clang-nightly-defconfig
  • gcc-13-allmodconfig
  • gcc-13-defconfig
  • gcc-8-defconfig-fe40093d

• x86_64, build

  • clang-nightly-lkftconfig
  • clang-nightly-x86_64_defconfig

## Metric Regressions (compared to v6.1.134-292-gb8b5da130779)

## Test Fixes (compared to v6.1.134-292-gb8b5da130779)

## Metric Fixes (compared to v6.1.134-292-gb8b5da130779)

## Test result summary total: 96862, pass: 76665, fail: 4435, skip: 15439, xfail: 323

## Build Summary

• arc: 5 total, 5 passed, 0 failed
• arm: 135 total, 135 passed, 0 failed
• arm64: 43 total, 43 passed, 0 failed
• i386: 27 total, 20 passed, 7 failed
• mips: 26 total, 22 passed, 4 failed
• parisc: 4 total, 4 passed, 0 failed
• powerpc: 32 total, 31 passed, 1 failed
• riscv: 11 total, 9 passed, 2 failed
• s390: 14 total, 8 passed, 6 failed
• sh: 10 total, 10 passed, 0 failed
• sparc: 7 total, 7 passed, 0 failed
• x86_64: 35 total, 32 passed, 3 failed

## Test suites summary

• boot
• commands
• kselftest-arm64
• kselftest-breakpoints
• kselftest-capabilities
• kselftest-cgroup
• kselftest-clone3
• kselftest-core
• kselftest-cpu-hotplug
• kselftest-cpufreq
• kselftest-efivarfs
• kselftest-exec
• kselftest-fpu
• kselftest-ftrace
• kselftest-futex
• kselftest-gpio
• kselftest-intel_pstate
• kselftest-ipc
• kselftest-kcmp
• kselftest-kvm
• kselftest-livepatch
• kselftest-membarrier
• kselftest-memfd
• kselftest-mincore
• kselftest-mqueue
• kselftest-net
• kselftest-net-mptcp
• kselftest-openat2
• kselftest-ptrace
• kselftest-rseq
• kselftest-rtc
• kselftest-seccomp
• kselftest-sigaltstack
• kselftest-size
• kselftest-tc-testing
• kselftest-timers
• kselftest-tmpfs
• kselftest-tpm2
• kselftest-user_events
• kselftest-vDSO
• kselftest-x86
• kunit
• kvm-unit-tests
• lava
• libgpiod
• libhugetlbfs
• log-parser-boot
• log-parser-build-clang
• log-parser-build-gcc
• log-parser-test
• ltp-capability
• ltp-commands
• ltp-containers
• ltp-controllers
• ltp-cpuhotplug
• ltp-crypto
• ltp-cve
• ltp-dio
• ltp-fcntl-locktests
• ltp-fs
• ltp-fs_bind
• ltp-fs_perms_simple
• ltp-hugetlb
• ltp-ipc
• ltp-math
• ltp-mm
• ltp-nptl
• ltp-pty
• ltp-sched
• ltp-smoke
• ltp-syscalls
• ltp-tracing
• perf
• rcutorture

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