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From: kernel test robot <lkp@intel.com>
To: kbuild@lists.01.org
Subject: arch/arm64/include/asm/current.h:19:9: sparse: sparse: context imbalance in 'RAW_SPINLOCK_in_HARDIRQ' - wrong count at exit
Date: Sat, 15 May 2021 00:23:04 +0800	[thread overview]
Message-ID: <202105150056.YvgGKDIV-lkp@intel.com> (raw)

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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Boqun Feng <boqun.feng@gmail.com>
CC: Peter Zijlstra <peterz@infradead.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   315d99318179b9cd5077ccc9f7f26a164c9fa998
commit: 9271a40d2a1429113160ccc4c16150921600bcc1 lockdep/selftest: Add wait context selftests
date:   4 months ago
:::::: branch date: 21 hours ago
:::::: commit date: 4 months ago
config: arm64-randconfig-s032-20210514 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-341-g8af24329-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9271a40d2a1429113160ccc4c16150921600bcc1
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 9271a40d2a1429113160ccc4c16150921600bcc1
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
   lib/locking-selftest.c:298:1: sparse: sparse: context imbalance in 'AA_spin' - wrong count at exit
   lib/locking-selftest.c:300:1: sparse: sparse: context imbalance in 'AA_wlock' - wrong count at exit
   lib/locking-selftest.c:302:1: sparse: sparse: context imbalance in 'AA_rlock' - wrong count at exit
   lib/locking-selftest.c:321:13: sparse: sparse: context imbalance in 'rlock_AA1' - wrong count at exit
   lib/locking-selftest.c:327:13: sparse: sparse: context imbalance in 'rlock_AA1B' - wrong count at exit
   lib/locking-selftest.c:347:13: sparse: sparse: context imbalance in 'rlock_AA2' - wrong count at exit
   lib/locking-selftest.c:359:13: sparse: sparse: context imbalance in 'rlock_AA3' - wrong count at exit
   lib/locking-selftest.c:722:1: sparse: sparse: context imbalance in 'double_unlock_spin' - unexpected unlock
   lib/locking-selftest.c:724:1: sparse: sparse: context imbalance in 'double_unlock_wlock' - unexpected unlock
   lib/locking-selftest.c:726:1: sparse: sparse: context imbalance in 'double_unlock_rlock' - unexpected unlock
   lib/locking-selftest.c:753:1: sparse: sparse: context imbalance in 'init_held_spin' - wrong count at exit
   lib/locking-selftest.c:755:1: sparse: sparse: context imbalance in 'init_held_wlock' - wrong count at exit
   lib/locking-selftest.c:757:1: sparse: sparse: context imbalance in 'init_held_rlock' - wrong count at exit
   lib/locking-selftest.c: note: in included file (through include/linux/rculist.h, include/linux/pid.h, include/linux/sched.h):
   include/linux/rcupdate.h:694:9: sparse: sparse: context imbalance in 'rcu_exit' - unexpected unlock
   include/linux/rcupdate.h:729:25: sparse: sparse: context imbalance in 'rcu_bh_exit' - unexpected unlock
   include/linux/rcupdate.h:771:25: sparse: sparse: context imbalance in 'rcu_sched_exit' - unexpected unlock
   lib/locking-selftest.c:2493:13: sparse: sparse: context imbalance in 'raw_spinlock_exit' - unexpected unlock
   lib/locking-selftest.c:2502:13: sparse: sparse: context imbalance in 'spinlock_exit' - unexpected unlock
   lib/locking-selftest.c:2573:1: sparse: sparse: context imbalance in 'RCU_in_HARDIRQ' - wrong count at exit
   lib/locking-selftest.c:2573:1: sparse: sparse: context imbalance in 'RCU_in_NOTTHREADED_HARDIRQ' - wrong count at exit
   lib/locking-selftest.c:2573:1: sparse: sparse: context imbalance in 'RCU_in_SOFTIRQ' - wrong count at exit
   lib/locking-selftest.c:2573:1: sparse: sparse: context imbalance in 'RCU_in_RCU' - wrong count at exit
   lib/locking-selftest.c:2573:1: sparse: sparse: context imbalance in 'RCU_in_RCU_BH' - wrong count at exit
   lib/locking-selftest.c:2573:1: sparse: sparse: context imbalance in 'RCU_in_RCU_CALLBACK' - wrong count at exit
   lib/locking-selftest.c:2573:1: sparse: sparse: context imbalance in 'RCU_in_RCU_SCHED' - wrong count at exit
   lib/locking-selftest.c:2573:1: sparse: sparse: context imbalance in 'RCU_in_RAW_SPINLOCK' - wrong count at exit
   lib/locking-selftest.c:2573:1: sparse: sparse: context imbalance in 'RCU_in_SPINLOCK' - wrong count at exit
   lib/locking-selftest.c:2573:1: sparse: sparse: context imbalance in 'RCU_in_MUTEX' - wrong count at exit
   lib/locking-selftest.c: note: in included file (through include/linux/thread_info.h, arch/arm64/include/asm/preempt.h, include/linux/preempt.h, ...):
>> arch/arm64/include/asm/current.h:19:9: sparse: sparse: context imbalance in 'RAW_SPINLOCK_in_HARDIRQ' - wrong count at exit
>> arch/arm64/include/asm/current.h:19:9: sparse: sparse: context imbalance in 'RAW_SPINLOCK_in_NOTTHREADED_HARDIRQ' - wrong count at exit
>> arch/arm64/include/asm/current.h:19:9: sparse: sparse: context imbalance in 'RAW_SPINLOCK_in_SOFTIRQ' - wrong count at exit
   lib/locking-selftest.c:2574:1: sparse: sparse: context imbalance in 'RAW_SPINLOCK_in_RCU' - wrong count at exit
   lib/locking-selftest.c:2574:1: sparse: sparse: context imbalance in 'RAW_SPINLOCK_in_RCU_BH' - wrong count at exit
   lib/locking-selftest.c:2574:1: sparse: sparse: context imbalance in 'RAW_SPINLOCK_in_RCU_CALLBACK' - wrong count at exit
   lib/locking-selftest.c:2574:1: sparse: sparse: context imbalance in 'RAW_SPINLOCK_in_RCU_SCHED' - wrong count at exit
   lib/locking-selftest.c:2574:1: sparse: sparse: context imbalance in 'RAW_SPINLOCK_in_RAW_SPINLOCK' - wrong count at exit
   lib/locking-selftest.c:2574:1: sparse: sparse: context imbalance in 'RAW_SPINLOCK_in_SPINLOCK' - wrong count at exit
   lib/locking-selftest.c:2574:1: sparse: sparse: context imbalance in 'RAW_SPINLOCK_in_MUTEX' - wrong count at exit
>> arch/arm64/include/asm/current.h:19:9: sparse: sparse: context imbalance in 'SPINLOCK_in_HARDIRQ' - wrong count at exit
>> arch/arm64/include/asm/current.h:19:9: sparse: sparse: context imbalance in 'SPINLOCK_in_NOTTHREADED_HARDIRQ' - wrong count at exit
>> arch/arm64/include/asm/current.h:19:9: sparse: sparse: context imbalance in 'SPINLOCK_in_SOFTIRQ' - wrong count at exit
   lib/locking-selftest.c:2575:1: sparse: sparse: context imbalance in 'SPINLOCK_in_RCU' - wrong count at exit
   lib/locking-selftest.c:2575:1: sparse: sparse: context imbalance in 'SPINLOCK_in_RCU_BH' - wrong count at exit
   lib/locking-selftest.c:2575:1: sparse: sparse: context imbalance in 'SPINLOCK_in_RCU_CALLBACK' - wrong count at exit
   lib/locking-selftest.c:2575:1: sparse: sparse: context imbalance in 'SPINLOCK_in_RCU_SCHED' - wrong count at exit
   lib/locking-selftest.c:2575:1: sparse: sparse: context imbalance in 'SPINLOCK_in_RAW_SPINLOCK' - wrong count at exit
   lib/locking-selftest.c:2575:1: sparse: sparse: context imbalance in 'SPINLOCK_in_SPINLOCK' - wrong count at exit
   lib/locking-selftest.c:2575:1: sparse: sparse: context imbalance in 'SPINLOCK_in_MUTEX' - wrong count at exit
   lib/locking-selftest.c:2576:1: sparse: sparse: context imbalance in 'MUTEX_in_RCU' - wrong count at exit
   lib/locking-selftest.c:2576:1: sparse: sparse: context imbalance in 'MUTEX_in_RCU_BH' - wrong count at exit
   lib/locking-selftest.c:2576:1: sparse: sparse: context imbalance in 'MUTEX_in_RCU_SCHED' - wrong count at exit
   lib/locking-selftest.c:2576:1: sparse: sparse: context imbalance in 'MUTEX_in_RAW_SPINLOCK' - wrong count at exit
   lib/locking-selftest.c:2576:1: sparse: sparse: context imbalance in 'MUTEX_in_SPINLOCK' - wrong count at exit

vim +/RAW_SPINLOCK_in_HARDIRQ +19 arch/arm64/include/asm/current.h

c02433dd6de32f Mark Rutland 2016-11-03  10  
9d84fb27fa135c Mark Rutland 2017-01-03  11  /*
9d84fb27fa135c Mark Rutland 2017-01-03  12   * We don't use read_sysreg() as we want the compiler to cache the value where
9d84fb27fa135c Mark Rutland 2017-01-03  13   * possible.
9d84fb27fa135c Mark Rutland 2017-01-03  14   */
c02433dd6de32f Mark Rutland 2016-11-03  15  static __always_inline struct task_struct *get_current(void)
c02433dd6de32f Mark Rutland 2016-11-03  16  {
9d84fb27fa135c Mark Rutland 2017-01-03  17  	unsigned long sp_el0;
9d84fb27fa135c Mark Rutland 2017-01-03  18  
9d84fb27fa135c Mark Rutland 2017-01-03 @19  	asm ("mrs %0, sp_el0" : "=r" (sp_el0));
9d84fb27fa135c Mark Rutland 2017-01-03  20  
9d84fb27fa135c Mark Rutland 2017-01-03  21  	return (struct task_struct *)sp_el0;
c02433dd6de32f Mark Rutland 2016-11-03  22  }
c02433dd6de32f Mark Rutland 2016-11-03  23  

:::::: The code at line 19 was first introduced by commit
:::::: 9d84fb27fa135c99c9fe3de33628774a336a70a8 arm64: restore get_current() optimisation

:::::: TO: Mark Rutland <mark.rutland@arm.com>
:::::: CC: Catalin Marinas <catalin.marinas@arm.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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             reply	other threads:[~2021-05-14 16:23 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-14 16:23 kernel test robot [this message]
  -- strict thread matches above, loose matches on Subject: below --
2021-08-07  1:20 arch/arm64/include/asm/current.h:19:9: sparse: sparse: context imbalance in 'RAW_SPINLOCK_in_HARDIRQ' - wrong count at exit kernel test robot
2021-06-15 15:57 kernel test robot
2021-02-27 20:41 kernel test robot

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