Messages in this thread | | | Date | Wed, 10 May 2017 04:01:17 +0800 | From | kbuild test robot <> | Subject | arch/x86/include/asm/qspinlock.h:17:9: sparse: context imbalance in 'fsnotify_add_mark_list' - unexpected unlock |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 4a1e31c68e9f40be32838944931178b0d9ed9162 commit: 08991e83b7286635167bab40927665a90fb00d81 fsnotify: Free fsnotify_mark_connector when there is no mark attached date: 4 weeks ago reproduce: # apt-get install sparse git checkout 08991e83b7286635167bab40927665a90fb00d81 make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
fs/notify/mark.c:88:19: sparse: symbol 'fsnotify_mark_connector_cachep' was not declared. Should it be static? fs/notify/mark.c:406:39: sparse: context imbalance in 'fsnotify_grab_connector' - wrong count at exit >> arch/x86/include/asm/qspinlock.h:17:9: sparse: context imbalance in 'fsnotify_add_mark_list' - unexpected unlock fs/notify/mark.c:534:9: sparse: context imbalance in 'fsnotify_add_mark_locked' - unexpected unlock fs/notify/mark.c:578:25: sparse: context imbalance in 'fsnotify_find_mark' - unexpected unlock fs/notify/mark.c:667:24: sparse: context imbalance in 'fsnotify_destroy_marks' - unexpected unlock
vim +/fsnotify_add_mark_list +17 arch/x86/include/asm/qspinlock.h
d73a3397 Waiman Long 2015-04-24 1 #ifndef _ASM_X86_QSPINLOCK_H d73a3397 Waiman Long 2015-04-24 2 #define _ASM_X86_QSPINLOCK_H d73a3397 Waiman Long 2015-04-24 3 2aa79af6 Peter Zijlstra (Intel 2015-04-24 4) #include <asm/cpufeature.h> d73a3397 Waiman Long 2015-04-24 5 #include <asm-generic/qspinlock_types.h> f233f7f1 Peter Zijlstra (Intel 2015-04-24 6) #include <asm/paravirt.h> d73a3397 Waiman Long 2015-04-24 7 d73a3397 Waiman Long 2015-04-24 8 #define queued_spin_unlock queued_spin_unlock d73a3397 Waiman Long 2015-04-24 9 /** d73a3397 Waiman Long 2015-04-24 10 * queued_spin_unlock - release a queued spinlock d73a3397 Waiman Long 2015-04-24 11 * @lock : Pointer to queued spinlock structure d73a3397 Waiman Long 2015-04-24 12 * d73a3397 Waiman Long 2015-04-24 13 * A smp_store_release() on the least-significant byte. d73a3397 Waiman Long 2015-04-24 14 */ f233f7f1 Peter Zijlstra (Intel 2015-04-24 15) static inline void native_queued_spin_unlock(struct qspinlock *lock) d73a3397 Waiman Long 2015-04-24 16 { d73a3397 Waiman Long 2015-04-24 @17 smp_store_release((u8 *)lock, 0); d73a3397 Waiman Long 2015-04-24 18 } d73a3397 Waiman Long 2015-04-24 19 f233f7f1 Peter Zijlstra (Intel 2015-04-24 20) #ifdef CONFIG_PARAVIRT_SPINLOCKS f233f7f1 Peter Zijlstra (Intel 2015-04-24 21) extern void native_queued_spin_lock_slowpath(struct qspinlock *lock, u32 val); f233f7f1 Peter Zijlstra (Intel 2015-04-24 22) extern void __pv_init_lock_hash(void); f233f7f1 Peter Zijlstra (Intel 2015-04-24 23) extern void __pv_queued_spin_lock_slowpath(struct qspinlock *lock, u32 val); f233f7f1 Peter Zijlstra (Intel 2015-04-24 24) extern void __raw_callee_save___pv_queued_spin_unlock(struct qspinlock *lock); f233f7f1 Peter Zijlstra (Intel 2015-04-24 25)
:::::: The code at line 17 was first introduced by commit :::::: d73a33973f16ab6703e75ea00edee857afa3406e locking/qspinlock, x86: Enable x86-64 to use queued spinlocks
:::::: TO: Waiman Long <Waiman.Long@hp.com> :::::: CC: Ingo Molnar <mingo@kernel.org>
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