linux-kernel - [paulmck-rcu:dev.2022.11.18a] BUILD REGRESSION 7831c47ed19bac29a16088dc2511c9df012ff128

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Date:   Fri, 25 Nov 2022 10:51:08 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Paul E. McKenney" <paulmck@...nel.org>
Cc:     linux-kernel@...r.kernel.org
Subject: [paulmck-rcu:dev.2022.11.18a] BUILD REGRESSION
 7831c47ed19bac29a16088dc2511c9df012ff128

tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2022.11.18a
branch HEAD: 7831c47ed19bac29a16088dc2511c9df012ff128  rcu: Make SRCU mandatory

Error/Warning reports:

https://lore.kernel.org/oe-kbuild-all/202211231037.tYD7Fs4z-lkp@intel.com
https://lore.kernel.org/oe-kbuild-all/202211241842.t0GeLmJk-lkp@intel.com
https://lore.kernel.org/oe-kbuild-all/202211242205.zuqd06xy-lkp@intel.com
https://lore.kernel.org/oe-kbuild-all/202211242235.YuBuC1y7-lkp@intel.com

Error/Warning: (recently discovered and may have been fixed)

kernel/rcu/tasks.h:1511:17: warning: 'flags' is used uninitialized [-Wuninitialized]
kernel/rcu/tasks.h:256:17: error: implicit declaration of function 'raw_spin_lock_rcu_node'; did you mean 'raw_spin_lock_init'? [-Werror=implicit-function-declaration]
kernel/rcu/tasks.h:256:3: error: implicit declaration of function 'raw_spin_lock_rcu_node' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
kernel/rcu/tasks.h:264:17: error: implicit declaration of function 'raw_spin_unlock_rcu_node'; did you mean 'raw_spin_unlock_irqrestore'? [-Werror=implicit-function-declaration]
kernel/rcu/tasks.h:264:3: error: implicit declaration of function 'raw_spin_unlock_rcu_node' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
kernel/rcu/tasks.h:299:14: error: implicit declaration of function 'raw_spin_trylock_rcu_node'; did you mean 'raw_spin_trylock_irqsave'? [-Werror=implicit-function-declaration]
kernel/rcu/tasks.h:299:7: error: implicit declaration of function 'raw_spin_trylock_rcu_node' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
kernel/rcu/tasks.h:317:2: error: implicit declaration of function 'raw_spin_unlock_irqrestore_rcu_node' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
kernel/rcu/tasks.h:317:9: error: implicit declaration of function 'raw_spin_unlock_irqrestore_rcu_node'; did you mean 'raw_spin_unlock_irqrestore'? [-Werror=implicit-function-declaration]
kernel/rcu/tasks.h:369:17: error: implicit declaration of function 'raw_spin_lock_irqsave_rcu_node'; did you mean 'raw_spin_lock_irqsave_nested'? [-Werror=implicit-function-declaration]
kernel/rcu/tasks.h:369:3: error: implicit declaration of function 'raw_spin_lock_irqsave_rcu_node' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
kernel/rcu/tasks.h:369:41: warning: variable 'flags' is uninitialized when used here [-Wuninitialized]

Error/Warning ids grouped by kconfigs:

gcc_recent_errors
|-- m68k-allmodconfig
|   `-- kernel-rcu-tasks.h:warning:flags-is-used-uninitialized
|-- m68k-allyesconfig
|   `-- kernel-rcu-tasks.h:warning:flags-is-used-uninitialized
`-- x86_64-randconfig-a013
    |-- kernel-rcu-tasks.h:error:implicit-declaration-of-function-raw_spin_lock_irqsave_rcu_node
    |-- kernel-rcu-tasks.h:error:implicit-declaration-of-function-raw_spin_lock_rcu_node
    |-- kernel-rcu-tasks.h:error:implicit-declaration-of-function-raw_spin_trylock_rcu_node
    |-- kernel-rcu-tasks.h:error:implicit-declaration-of-function-raw_spin_unlock_irqrestore_rcu_node
    |-- kernel-rcu-tasks.h:error:implicit-declaration-of-function-raw_spin_unlock_rcu_node
    `-- kernel-rcu-tasks.h:warning:flags-is-used-uninitialized
clang_recent_errors
|-- i386-randconfig-a015
|   |-- kernel-rcu-tasks.h:error:implicit-declaration-of-function-raw_spin_lock_irqsave_rcu_node-is-invalid-in-C99-Werror-Wimplicit-function-declaration
|   |-- kernel-rcu-tasks.h:error:implicit-declaration-of-function-raw_spin_lock_rcu_node-is-invalid-in-C99-Werror-Wimplicit-function-declaration
|   |-- kernel-rcu-tasks.h:error:implicit-declaration-of-function-raw_spin_trylock_rcu_node-is-invalid-in-C99-Werror-Wimplicit-function-declaration
|   |-- kernel-rcu-tasks.h:error:implicit-declaration-of-function-raw_spin_unlock_irqrestore_rcu_node-is-invalid-in-C99-Werror-Wimplicit-function-declaration
|   |-- kernel-rcu-tasks.h:error:implicit-declaration-of-function-raw_spin_unlock_rcu_node-is-invalid-in-C99-Werror-Wimplicit-function-declaration
|   `-- kernel-rcu-tasks.h:warning:variable-flags-is-uninitialized-when-used-here
`-- x86_64-randconfig-a012
    |-- kernel-rcu-tasks.h:error:implicit-declaration-of-function-raw_spin_lock_irqsave_rcu_node-is-invalid-in-C99-Werror-Wimplicit-function-declaration
    |-- kernel-rcu-tasks.h:error:implicit-declaration-of-function-raw_spin_lock_rcu_node-is-invalid-in-C99-Werror-Wimplicit-function-declaration
    |-- kernel-rcu-tasks.h:error:implicit-declaration-of-function-raw_spin_trylock_rcu_node-is-invalid-in-C99-Werror-Wimplicit-function-declaration
    |-- kernel-rcu-tasks.h:error:implicit-declaration-of-function-raw_spin_unlock_irqrestore_rcu_node-is-invalid-in-C99-Werror-Wimplicit-function-declaration
    |-- kernel-rcu-tasks.h:error:implicit-declaration-of-function-raw_spin_unlock_rcu_node-is-invalid-in-C99-Werror-Wimplicit-function-declaration
    `-- kernel-rcu-tasks.h:warning:variable-flags-is-uninitialized-when-used-here

elapsed time: 3107m

configs tested: 56
configs skipped: 2

gcc tested configs:
arc                                 defconfig
alpha                               defconfig
um                             i386_defconfig
um                           x86_64_defconfig
s390                                defconfig
s390                             allmodconfig
powerpc                           allnoconfig
mips                             allyesconfig
powerpc                          allmodconfig
s390                             allyesconfig
sh                               allmodconfig
x86_64                          rhel-8.3-func
x86_64                    rhel-8.3-kselftests
x86_64                           rhel-8.3-syz
x86_64                           rhel-8.3-kvm
ia64                             allmodconfig
x86_64                         rhel-8.3-kunit
m68k                             allmodconfig
m68k                             allyesconfig
alpha                            allyesconfig
arc                              allyesconfig
i386                          randconfig-a014
i386                          randconfig-a012
i386                          randconfig-a016
x86_64                        randconfig-a004
x86_64                        randconfig-a002
x86_64                        randconfig-a006
arc                  randconfig-r043-20221124
x86_64                        randconfig-a013
x86_64                        randconfig-a011
x86_64                        randconfig-a015
i386                          randconfig-a001
i386                          randconfig-a003
i386                          randconfig-a005
x86_64                              defconfig
x86_64                               rhel-8.3
i386                                defconfig
i386                             allyesconfig
x86_64                           allyesconfig
arm                                 defconfig

clang tested configs:
i386                          randconfig-a013
i386                          randconfig-a011
i386                          randconfig-a015
x86_64                        randconfig-a005
x86_64                        randconfig-a001
x86_64                        randconfig-a003
riscv                randconfig-r042-20221124
hexagon              randconfig-r041-20221124
hexagon              randconfig-r045-20221124
s390                 randconfig-r044-20221124
x86_64                        randconfig-a012
x86_64                        randconfig-a014
x86_64                        randconfig-a016
i386                          randconfig-a002
i386                          randconfig-a004
i386                          randconfig-a006

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