linux-kernel - arm64 gcc-8 defconfig call to '__field_overflow' declared with attribute error value doesn't fit into mask

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Message-ID: <CA+G9fYssasMnOE36xLH5m7ky4fKxbzN7kX5mEE7icnuu+0hGuQ@mail.gmail.com>
Date: Thu, 22 May 2025 18:41:52 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: open list <linux-kernel@...r.kernel.org>, 
	Linux ARM <linux-arm-kernel@...ts.infradead.org>, linux-wireless@...r.kernel.org, 
	Netdev <netdev@...r.kernel.org>, lkft-triage@...ts.linaro.org, 
	Linux Regressions <regressions@...ts.linux.dev>
Cc: Arnd Bergmann <arnd@...db.de>, Ard Biesheuvel <ardb@...nel.org>, 
	Anders Roxell <anders.roxell@...aro.org>, Dan Carpenter <dan.carpenter@...aro.org>, 
	Johannes Berg <johannes.berg@...el.com>, 
	Miri Korenblit <miriam.rachel.korenblit@...el.com>
Subject: arm64 gcc-8 defconfig call to '__field_overflow' declared with
 attribute error value doesn't fit into mask

Regressions on arm64 defconfig build failed with gcc-8 on the Linux next
tag next-20250512 and next-20250522.

First seen on the next-20250512
 Good: next-20250509
 Bad:  next-20250512

Regressions found on arm64:
 - build/gcc-8-defconfig

Regression Analysis:
 - New regression? Yes
 - Reproducible? Yes

Build regression: arm64 gcc-8 defconfig call to '__field_overflow'
declared with attribute error value doesn't fit into mask

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

## Build log
-----
In file included from arch/arm64/include/asm/sysreg.h:1107,
                 from arch/arm64/include/asm/cputype.h:248,
                 from arch/arm64/include/asm/cache.h:43,
                 from include/vdso/cache.h:5,
                 from include/linux/cache.h:6,
                 from include/linux/time.h:5,
                 from include/linux/skbuff.h:15,
                 from include/linux/if_ether.h:19,
                 from include/linux/ieee80211.h:19,
                 from drivers/net/wireless/intel/iwlwifi/iwl-trans.h:10,
                 from drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info.c:6:
In function 'u32_encode_bits',
    inlined from 'iwl_pcie_ctxt_info_init' at
drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info.c:208:3:
include/linux/bitfield.h:195:3: error: call to '__field_overflow'
declared with attribute error: value doesn't fit into mask
   __field_overflow();     \
   ^~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:215:2: note: in expansion of macro '____MAKE_OP'
  ____MAKE_OP(u##size,u##size,,)
  ^~~~~~~~~~~
include/linux/bitfield.h:218:1: note: in expansion of macro '__MAKE_OP'
 __MAKE_OP(32)
 ^~~~~~~~~

## Source
* Kernel version: 6.15.0-rc7
* Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git
* Git sha: 460178e842c7a1e48a06df684c66eb5fd630bcf7
* Git describe: next-20250522

## Build
* Build log: https://qa-reports.linaro.org/api/testruns/28517069/log_file/
* Build history:
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250522/testrun/28517069/suite/build/test/gcc-8-defconfig/history/
* Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/2xRo9LbWebbQqL9EYIT8oB7qmNj/
* Kernel config:
https://storage.tuxsuite.com/public/linaro/lkft/builds/2xRo9LbWebbQqL9EYIT8oB7qmNj/config

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