From: kernel test robot <lkp@intel.com>
To: kbuild@lists.01.org
Subject: include/linux/spinlock.h:379:9: sparse: sparse: context imbalance in 'mxc_rtc_lock' - wrong count at exit
Date: Fri, 15 Jan 2021 14:41:48 +0800 [thread overview]
Message-ID: <202101151434.2laLqIGS-lkp@intel.com> (raw)
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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Alexandre Belloni <alexandre.belloni@bootlin.com>
CC: Fabio Estevam <festevam@gmail.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 146620506274bd24d52fb1c589110a30eed8240b
commit: 0020868f2a7037e87d6b3b196526de2fb885830d rtc: mxc{,_v2}: enable COMPILE_TEST
date: 6 weeks ago
:::::: branch date: 9 hours ago
:::::: commit date: 6 weeks ago
config: powerpc-randconfig-s031-20210115 (attached as .config)
compiler: powerpc-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: v0.6.3-208-g46a52ca4-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0020868f2a7037e87d6b3b196526de2fb885830d
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 0020868f2a7037e87d6b3b196526de2fb885830d
# 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=powerpc
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 >>)"
drivers/rtc/rtc-mxc_v2.c: note: in included file (through include/linux/rwsem.h, include/linux/notifier.h, include/linux/clk.h):
>> include/linux/spinlock.h:379:9: sparse: sparse: context imbalance in 'mxc_rtc_lock' - wrong count at exit
include/linux/spinlock.h:404:9: sparse: sparse: context imbalance in 'mxc_rtc_unlock' - unexpected unlock
vim +/mxc_rtc_lock +379 include/linux/spinlock.h
c2f21ce2e31286a0 Thomas Gleixner 2009-12-02 376
3490565b633c705d Denys Vlasenko 2015-07-13 377 static __always_inline void spin_lock_irq(spinlock_t *lock)
c2f21ce2e31286a0 Thomas Gleixner 2009-12-02 378 {
c2f21ce2e31286a0 Thomas Gleixner 2009-12-02 @379 raw_spin_lock_irq(&lock->rlock);
c2f21ce2e31286a0 Thomas Gleixner 2009-12-02 380 }
c2f21ce2e31286a0 Thomas Gleixner 2009-12-02 381
:::::: The code at line 379 was first introduced by commit
:::::: c2f21ce2e31286a0a32f8da0a7856e9ca1122ef3 locking: Implement new raw_spinlock
:::::: TO: Thomas Gleixner <tglx@linutronix.de>
:::::: CC: Thomas Gleixner <tglx@linutronix.de>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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next reply other threads:[~2021-01-15 6:41 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-15 6:41 kernel test robot [this message]
-- strict thread matches above, loose matches on Subject: below --
2021-03-30 3:10 include/linux/spinlock.h:379:9: sparse: sparse: context imbalance in 'mxc_rtc_lock' - wrong count at exit kernel test robot
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