From: KernelCI bot <bot@kernelci.org>
To: kernelci-results@groups.io
Cc: gus@collabora.com, rppt@kernel.org, linux-mm@kvack.org
Subject: [REGRESSION] rppt/for-kernelci: (build) cast from 'void (*)(struct callback_head *)' to 'void (*)(struct r...
Date: Tue, 25 Nov 2025 01:59:04 -0000 [thread overview]
Message-ID: <176403594454.337.4411088799070097174@f771fd7c9232> (raw)
Hello,
New build issue found on rppt/for-kernelci:
---
cast from 'void (*)(struct callback_head *)' to 'void (*)(struct rq *)' converts to incompatible function type [-Werror,-Wcast-function-type-strict] in kernel/sched/core.o (kernel/sched/core.c) [logspec:kbuild,kbuild.compiler.error]
---
- dashboard: https://d.kernelci.org/i/maestro:3da16ecb10e01489573fa267fa05ce5c8f573ac7
- giturl: https://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock.git
- commit HEAD: 7a1b17aedd2aad3a04a211865f048903bd47fedd
Log excerpt:
=====================================================
kernel/sched/core.c:4790:10: error: cast from 'void (*)(struct callback_head *)' to 'void (*)(struct rq *)' converts to incompatible function type [-Werror,-Wcast-function-type-strict]
4790 | func = (void (*)(struct rq *))head->func;
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/sched/core.c:4814:10: error: cast from 'void (*)(struct rq *)' to 'void (*)(struct callback_head *)' converts to incompatible function type [-Werror,-Wcast-function-type-strict]
4814 | .func = (void (*)(struct callback_head *))balance_push,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CC arch/x86/entry/vdso/vdso32-setup.o
3 errors generated.
=====================================================
# Builds where the incident occurred:
## x86_64_defconfig on (x86_64):
- compiler: clang-21
- config: https://files.kernelci.org/kbuild-clang-21-x86-6924fcedf5b8743b1f5fa54f/.config
- dashboard: https://d.kernelci.org/build/maestro:6924fcedf5b8743b1f5fa54f
#kernelci issue maestro:3da16ecb10e01489573fa267fa05ce5c8f573ac7
Reported-by: kernelci.org bot <bot@kernelci.org>
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