Please kindly ignore this mail. It is duplicated. Sorry for noise. Best Regards, Hui
>-----Original Message----- >From: kernel test robot <l...@intel.com> >Sent: 2020年9月2日 15:39 >To: Leo Yan <leo....@linaro.org> >Cc: kbuild-...@lists.01.org; linux-kernel@vger.kernel.org; Greg Kroah-Hartman ><gre...@linuxfoundation.org>; Jeffrey Hugo <jeffrey.l.h...@gmail.com> >Subject: [kbuild-all] include/asm-generic/qspinlock.h:94:9: sparse: sparse: >context >imbalance in '__msm_console_write' - unexpected unlock > >tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git >master >head: 9c7d619be5a002ea29c172df5e3c1227c22cbb41 >commit: 0e4f7f920a5c6bfe5e851e989f27b35a0cc7fb7e tty: serial: msm_serial: >Fix lockup for sysrq and oops >date: 9 months ago >config: arm64-randconfig-s031-20200829 (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: v0.6.2-191-g10164920-dirty > git checkout 0e4f7f920a5c6bfe5e851e989f27b35a0cc7fb7e > # 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=arm64 > >If you fix the issue, kindly add following tag as appropriate >Reported-by: kernel test robot <l...@intel.com> > > >sparse warnings: (new ones prefixed by >>) > > drivers/tty/serial/msm_serial.c:736:25: sparse: sparse: context imbalance in >'msm_handle_rx_dm' - unexpected unlock > drivers/tty/serial/msm_serial.c:802:28: sparse: sparse: context imbalance in >'msm_handle_rx' - unexpected unlock > drivers/tty/serial/msm_serial.c:1100:12: sparse: sparse: context imbalance > in >'msm_set_baud_rate' - unexpected unlock > drivers/tty/serial/msm_serial.c: note: in included file (through >arch/arm64/include/generated/asm/qspinlock.h, >arch/arm64/include/asm/spinlock.h, include/linux/spinlock.h, ...): >>> include/asm-generic/qspinlock.h:94:9: sparse: sparse: context >>> imbalance in '__msm_console_write' - unexpected unlock > ># >https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0e >4f7f920a5c6bfe5e851e989f27b35a0cc7fb7e >git remote add linus >https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git >git fetch --no-tags linus master >git checkout 0e4f7f920a5c6bfe5e851e989f27b35a0cc7fb7e >vim +/__msm_console_write +94 include/asm-generic/qspinlock.h > >a33fda35e3a765 Waiman Long 2015-04-24 83 >a33fda35e3a765 Waiman Long 2015-04-24 84 #ifndef queued_spin_unlock >a33fda35e3a765 Waiman Long 2015-04-24 85 /** >a33fda35e3a765 Waiman Long 2015-04-24 86 * queued_spin_unlock - release a >queued spinlock >a33fda35e3a765 Waiman Long 2015-04-24 87 * @lock : Pointer to queued >spinlock structure >a33fda35e3a765 Waiman Long 2015-04-24 88 */ >a33fda35e3a765 Waiman Long 2015-04-24 89 static __always_inline void >queued_spin_unlock(struct qspinlock *lock) >a33fda35e3a765 Waiman Long 2015-04-24 90 { >a33fda35e3a765 Waiman Long 2015-04-24 91 /* >ca50e426f96c90 Pan Xinhui 2016-06-03 92 * unlock() needs release >semantics: >a33fda35e3a765 Waiman Long 2015-04-24 93 */ >626e5fbc143589 Will Deacon 2018-04-26 @94 smp_store_release(&lock- >>locked, 0); >a33fda35e3a765 Waiman Long 2015-04-24 95 } >a33fda35e3a765 Waiman Long 2015-04-24 96 #endif >a33fda35e3a765 Waiman Long 2015-04-24 97 > >:::::: The code at line 94 was first introduced by commit >:::::: 626e5fbc14358901ddaa90ce510e0fbeab310432 locking/qspinlock: Use >smp_store_release() in queued_spin_unlock() > >:::::: TO: Will Deacon <will.dea...@arm.com> >:::::: CC: Ingo Molnar <mi...@kernel.org> > >--- >0-DAY CI Kernel Test Service, Intel Corporation >https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org