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* [tip:locking/core 1/10] arch/sh/include/asm/thread_info.h:72:9: sparse: sparse: context imbalance in 'RCU_in_HARDIRQ' - wrong count at exit
@ 2021-02-02 23:09 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-02-02 23:09 UTC (permalink / raw)
  To: kbuild

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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
CC: x86(a)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/tip/tip.git locking/core
head:   997acaf6b4b59c6a9c259740312a69ea549cc684
commit: 9271a40d2a1429113160ccc4c16150921600bcc1 [1/10] lockdep/selftest: Add wait context selftests
:::::: branch date: 12 days ago
:::::: commit date: 3 weeks ago
config: sh-randconfig-s031-20210202 (attached as .config)
compiler: sh4-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: v0.6.3-215-g0fb77bb6-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=9271a40d2a1429113160ccc4c16150921600bcc1
        git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
        git fetch --no-tags tip locking/core
        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__' ARCH=sh 

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:2456:13: sparse: sparse: context imbalance in 'rcu_exit' - unexpected unlock
   lib/locking-selftest.c:2465:13: sparse: sparse: context imbalance in 'rcu_bh_exit' - unexpected unlock
   lib/locking-selftest.c:2474:13: 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: note: in included file (through include/linux/thread_info.h, include/asm-generic/preempt.h, arch/sh/include/generated/asm/preempt.h, ...):
>> arch/sh/include/asm/thread_info.h:72:9: sparse: sparse: context imbalance in 'RCU_in_HARDIRQ' - wrong count at exit
>> arch/sh/include/asm/thread_info.h:72:9: sparse: sparse: context imbalance in 'RCU_in_NOTTHREADED_HARDIRQ' - wrong count at exit
>> arch/sh/include/asm/thread_info.h:72:9: 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
>> arch/sh/include/asm/thread_info.h:72:9: sparse: sparse: context imbalance in 'RAW_SPINLOCK_in_HARDIRQ' - wrong count at exit
>> arch/sh/include/asm/thread_info.h:72:9: sparse: sparse: context imbalance in 'RAW_SPINLOCK_in_NOTTHREADED_HARDIRQ' - wrong count at exit
>> arch/sh/include/asm/thread_info.h:72:9: 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/sh/include/asm/thread_info.h:72:9: sparse: sparse: context imbalance in 'SPINLOCK_in_HARDIRQ' - wrong count at exit
>> arch/sh/include/asm/thread_info.h:72:9: sparse: sparse: context imbalance in 'SPINLOCK_in_NOTTHREADED_HARDIRQ' - wrong count at exit
>> arch/sh/include/asm/thread_info.h:72:9: 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 +/RCU_in_HARDIRQ +72 arch/sh/include/asm/thread_info.h

a6a31139897a5e include/asm-sh/thread_info.h      Paul Mundt     2006-09-27  66  
^1da177e4c3f41 include/asm-sh/thread_info.h      Linus Torvalds 2005-04-16  67  /* how to get the thread information struct from C */
^1da177e4c3f41 include/asm-sh/thread_info.h      Linus Torvalds 2005-04-16  68  static inline struct thread_info *current_thread_info(void)
^1da177e4c3f41 include/asm-sh/thread_info.h      Linus Torvalds 2005-04-16  69  {
^1da177e4c3f41 include/asm-sh/thread_info.h      Linus Torvalds 2005-04-16  70  	struct thread_info *ti;
37744feebc0869 arch/sh/include/asm/thread_info.h Arnd Bergmann  2020-04-20  71  #if defined(CONFIG_CPU_HAS_SR_RB)
114f132975ae8d include/asm-sh/thread_info.h      Paul Mundt     2007-11-09 @72  	__asm__ __volatile__ ("stc	r7_bank, %0" : "=r" (ti));
f1517494407b1f include/asm-sh/thread_info.h      Paul Mundt     2006-09-27  73  #else
f1517494407b1f include/asm-sh/thread_info.h      Paul Mundt     2006-09-27  74  	unsigned long __dummy;
f1517494407b1f include/asm-sh/thread_info.h      Paul Mundt     2006-09-27  75  
f1517494407b1f include/asm-sh/thread_info.h      Paul Mundt     2006-09-27  76  	__asm__ __volatile__ (
f1517494407b1f include/asm-sh/thread_info.h      Paul Mundt     2006-09-27  77  		"mov	r15, %0\n\t"
f1517494407b1f include/asm-sh/thread_info.h      Paul Mundt     2006-09-27  78  		"and	%1, %0\n\t"
f1517494407b1f include/asm-sh/thread_info.h      Paul Mundt     2006-09-27  79  		: "=&r" (ti), "=r" (__dummy)
f1517494407b1f include/asm-sh/thread_info.h      Paul Mundt     2006-09-27  80  		: "1" (~(THREAD_SIZE - 1))
f1517494407b1f include/asm-sh/thread_info.h      Paul Mundt     2006-09-27  81  		: "memory");
f1517494407b1f include/asm-sh/thread_info.h      Paul Mundt     2006-09-27  82  #endif
f1517494407b1f include/asm-sh/thread_info.h      Paul Mundt     2006-09-27  83  
^1da177e4c3f41 include/asm-sh/thread_info.h      Linus Torvalds 2005-04-16  84  	return ti;
^1da177e4c3f41 include/asm-sh/thread_info.h      Linus Torvalds 2005-04-16  85  }
^1da177e4c3f41 include/asm-sh/thread_info.h      Linus Torvalds 2005-04-16  86  

:::::: The code at line 72 was first introduced by commit
:::::: 114f132975ae8db3caa0c3420dc1083bae8d3757 sh: SH-5 version of current_thread_info().

:::::: TO: Paul Mundt <lethal@linux-sh.org>
:::::: CC: Paul Mundt <lethal@linux-sh.org>

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

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