CC: [email protected] CC: [email protected] CC: [email protected] TO: Mark Rutland <[email protected]> CC: Peter Zijlstra <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/core head: cf3ee3c8c29dc349b2cf52e5e72e8cb805ff5e57 commit: e3d18cee258b898017b298b5b93f8134dd62aee3 [19/21] locking/atomic: centralize generated headers :::::: branch date: 3 weeks ago :::::: commit date: 3 weeks ago config: ia64-allmodconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 10.3.0 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: v0.6.3-341-g8af24329-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=e3d18cee258b898017b298b5b93f8134dd62aee3 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 e3d18cee258b898017b298b5b93f8134dd62aee3 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=ia64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> sparse warnings: (new ones prefixed by >>) kernel/futex.c:1557:9: sparse: sparse: context imbalance in 'wake_futex_pi' - unexpected unlock kernel/futex.c:1713:33: sparse: sparse: context imbalance in 'futex_wake_op' - different lock contexts for basic block kernel/futex.c: note: in included file (through include/linux/atomic.h, arch/ia64/include/asm/processor.h, arch/ia64/include/asm/timex.h, ...): >> include/linux/atomic/atomic-arch-fallback.h:511:9: sparse: sparse: context >> imbalance in 'futex_requeue' - different lock contexts for basic block kernel/futex.c:2450:9: sparse: sparse: context imbalance in '__fixup_pi_state_owner' - unexpected unlock kernel/futex.c:2576:13: sparse: sparse: context imbalance in 'futex_wait_queue_me' - unexpected unlock kernel/futex.c:2677:9: sparse: sparse: context imbalance in 'futex_wait_setup' - different lock contexts for basic block kernel/futex.c:2941:12: sparse: sparse: context imbalance in 'futex_unlock_pi' - different lock contexts for basic block kernel/futex.c:3214:29: sparse: sparse: context imbalance in 'futex_wait_requeue_pi' - unexpected unlock vim +/futex_requeue +511 include/linux/atomic/atomic-arch-fallback.h 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 506 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 507 #ifndef arch_atomic_dec 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 508 static __always_inline void 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 509 arch_atomic_dec(atomic_t *v) 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 510 { 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 @511 arch_atomic_sub(1, v); 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 512 } 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 513 #define arch_atomic_dec arch_atomic_dec 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 514 #endif 37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 515 :::::: The code at line 511 was first introduced by commit :::::: 37f8173dd84936ea78000ed1cad24f8b18d48ebb locking/atomics: Flip fallbacks and instrumentation :::::: TO: Peter Zijlstra <[email protected]> :::::: CC: Thomas Gleixner <[email protected]> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
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