CC: [email protected] CC: Linux Memory Management List <[email protected]> TO: Josef Bacik <[email protected]> CC: David Sterba <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 034307507118f7e1b18f8403c85af2216da2dc94 commit: fac2f60d5fe83fd45ee08a85c2eb7a09659edbe3 [2252/6356] btrfs: switch extent buffer tree lock to rw_semaphore :::::: branch date: 4 hours ago :::::: commit date: 2 weeks ago config: xtensa-randconfig-s032-20201116 (attached as .config) compiler: xtensa-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: v0.6.3-107-gaf3512a6-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=fac2f60d5fe83fd45ee08a85c2eb7a09659edbe3 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout fac2f60d5fe83fd45ee08a85c2eb7a09659edbe3 # 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=xtensa If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> "sparse warnings: (new ones prefixed by >>)" fs/btrfs/locking.c: note: in included file (through include/linux/rculist.h, include/linux/pid.h, include/linux/sched.h): >> include/linux/rcupdate.h:757:9: sparse: sparse: context imbalance in >> '__btrfs_tree_lock' - wrong count at exit fs/btrfs/locking.c:227:6: sparse: sparse: context imbalance in 'btrfs_tree_lock' - wrong count at exit vim +/__btrfs_tree_lock +757 include/linux/rcupdate.h 1eba8f84380bede Paul E. McKenney 2009-09-23 753 1eba8f84380bede Paul E. McKenney 2009-09-23 754 /* Used by lockdep and tracing: cannot be traced, cannot call lockdep. */ 7c614d6461399ac Paul E. McKenney 2009-08-24 755 static inline notrace void rcu_read_lock_sched_notrace(void) d6714c22b43fbcb Paul E. McKenney 2009-08-22 756 { d6714c22b43fbcb Paul E. McKenney 2009-08-22 @757 preempt_disable_notrace(); bc33f24bdca8b6e Paul E. McKenney 2009-08-22 758 __acquire(RCU_SCHED); d6714c22b43fbcb Paul E. McKenney 2009-08-22 759 } 1c50b728c3e7341 Mathieu Desnoyers 2008-09-29 760 :::::: The code at line 757 was first introduced by commit :::::: d6714c22b43fbcbead7e7b706ff270e15f04a791 rcu: Renamings to increase RCU clarity :::::: TO: Paul E. McKenney <[email protected]> :::::: CC: Ingo Molnar <[email protected]> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
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