linux-kernel - kernel/sched/core.c:961:15: error: incompatible pointer to integer conversion passing 'typeof

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Date: Wed, 3 Apr 2024 13:08:08 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: open list <linux-kernel@...r.kernel.org>, 
	Linux Regressions <regressions@...ts.linux.dev>, lkft-triage@...ts.linaro.org, 
	clang-built-linux <llvm@...ts.linux.dev>, Linux PM <linux-pm@...r.kernel.org>
Cc: Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>, 
	Juri Lelli <juri.lelli@...hat.com>, Vincent Guittot <vincent.guittot@...aro.org>, 
	Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>
Subject: kernel/sched/core.c:961:15: error: incompatible pointer to integer
 conversion passing 'typeof

The riscv clang-17 defconfig build failed due to following warnings / errors
on the Linux next-20240402.

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

riscv:
  build:
    * clang-17-lkftconfig - Failed
    * rv32-clang-17-defconfig - Failed
    * clang-17-tinyconfig - Failed
    * rv32-clang-17-tinyconfig - Failed
    * clang-17-defconfig - Failed
    * clang-17-allnoconfig - Failed
    * rv32-clang-17-allnoconfig - Failed

Build log:
-------
kernel/sched/core.c:961:15: error: incompatible pointer to integer
conversion passing 'typeof (*((__ai_ptr)))' (aka 'struct wake_q_node
*') to parameter of type 'uintptr_t' (aka 'unsigned long')
[-Wint-conversion]
  961 |         if (unlikely(cmpxchg_relaxed(&node->next, NULL, WAKE_Q_TAIL)))
      |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Steps to reproduce:
---------
# tuxmake --runtime podman --target-arch riscv --toolchain clang-17
--kconfig defconfig LLVM=1 LLVM_IAS=1

Links:
 - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240402/testrun/23264917/suite/build/test/clang-17-defconfig/details/
 - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240402/testrun/23264917/suite/build/test/clang-17-defconfig/log

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