linux-kernel - i386: kernel/sched/debug.c:341:57: error: integer overflow in expression of type 'long int' results in '-100663296' [-Werror=overflow]

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Message-ID: <CA+G9fYtE2GAbeqU+AOCffgo2oH0RTJUxU+=Pi3cFn4di_KgBAQ@mail.gmail.com>
Date: Thu, 1 Aug 2024 20:42:07 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: open list <linux-kernel@...r.kernel.org>, lkft-triage@...ts.linaro.org, 
	Linux Regressions <regressions@...ts.linux.dev>
Cc: Arnd Bergmann <arnd@...db.de>, Dan Carpenter <dan.carpenter@...aro.org>, 
	Vincent Guittot <vincent.guittot@...aro.org>, Anders Roxell <anders.roxell@...aro.org>, 
	Stephen Rothwell <sfr@...b.auug.org.au>
Subject: i386: kernel/sched/debug.c:341:57: error: integer overflow in
 expression of type 'long int' results in '-100663296' [-Werror=overflow]

The i386 kselftest merge config build failed due to following warnings / errors
on today's Linux next-20240801 tag with gcc-13.

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

Build log:
--------
In file included from kernel/sched/build_utility.c:72:
kernel/sched/debug.c:341:57: error: integer overflow in expression of
type 'long int' results in '-100663296' [-Werror=overflow]
  341 | static unsigned long fair_server_period_max = (1 << 22) *
NSEC_PER_USEC; /* ~4 seconds */
      |                                                         ^
cc1: all warnings being treated as errors

Steps to reproduce:
---
 - https://storage.tuxsuite.com/public/linaro/lkft/builds/2k2tW5pcf7uulmRCWIAWeormjb0/tuxmake_reproducer.sh

metadata:
------
  git_describe: next-20240801
  git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next
  git_sha: 048d8cb65cde9fe7534eb4440bcfddcf406bb49c
  git_short_log: 048d8cb65cde ("Add linux-next specific files for 20240801")
  compiler: {'name': 'i686-linux-gnu-gcc', 'version': '13',
'version_full': 'i686-linux-gnu-gcc (Debian 13.2.0-12) 13.2.0'}
  arch: i386
  build_name: gcc-13-lkftconfig-kselftest
  config: https://storage.tuxsuite.com/public/linaro/lkft/builds/2k2tW5pcf7uulmRCWIAWeormjb0/config
  download_url:
https://storage.tuxsuite.com/public/linaro/lkft/builds/2k2tW5pcf7uulmRCWIAWeormjb0/

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