tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 28c736b0e92e11bfe2b9997688213dc43cb22182 commit: c3c510ce431cd99fa10dcd50d995c8e89330ee5b [2329/11761] bpf: Add 'owner' field to bpf_{list,rb}_node config: powerpc64-randconfig-r131-20230822 (https://download.01.org/0day-ci/archive/20230822/202308222338.DPTQeMxG-lkp@xxxxxxxxx/config) compiler: powerpc64-linux-gcc (GCC) 13.2.0 reproduce: (https://download.01.org/0day-ci/archive/20230822/202308222338.DPTQeMxG-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202308222338.DPTQeMxG-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) kernel/bpf/helpers.c: note: in included file (through arch/powerpc/include/asm/atomic.h, arch/powerpc/include/asm/paca.h, arch/powerpc/include/asm/current.h, ...): >> arch/powerpc/include/asm/cmpxchg.h:626:47: sparse: sparse: cast truncates bits from constant value (5deadbeef000eb9f becomes f000eb9f) arch/powerpc/include/asm/cmpxchg.h:628:48: sparse: sparse: cast truncates bits from constant value (5deadbeef000eb9f becomes f000eb9f) >> arch/powerpc/include/asm/cmpxchg.h:626:47: sparse: sparse: cast truncates bits from constant value (5deadbeef000eb9f becomes f000eb9f) arch/powerpc/include/asm/cmpxchg.h:628:48: sparse: sparse: cast truncates bits from constant value (5deadbeef000eb9f becomes f000eb9f) kernel/bpf/helpers.c:2419:18: sparse: sparse: context imbalance in 'bpf_rcu_read_lock' - wrong count at exit kernel/bpf/helpers.c: note: in included file (through include/linux/workqueue.h, include/linux/bpf.h): include/linux/rcupdate.h:780:9: sparse: sparse: context imbalance in 'bpf_rcu_read_unlock' - unexpected unlock vim +626 arch/powerpc/include/asm/cmpxchg.h ae3a197e3d0bfe David Howells 2012-03-28 619 ae3a197e3d0bfe David Howells 2012-03-28 620 static __always_inline unsigned long da58b23cb976ab Michael Ellerman 2016-11-24 621 __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, ae3a197e3d0bfe David Howells 2012-03-28 622 unsigned int size) ae3a197e3d0bfe David Howells 2012-03-28 623 { ae3a197e3d0bfe David Howells 2012-03-28 624 switch (size) { d0563a1297e234 Pan Xinhui 2016-04-27 625 case 1: d0563a1297e234 Pan Xinhui 2016-04-27 @626 return __cmpxchg_u8(ptr, old, new); d0563a1297e234 Pan Xinhui 2016-04-27 627 case 2: d0563a1297e234 Pan Xinhui 2016-04-27 628 return __cmpxchg_u16(ptr, old, new); ae3a197e3d0bfe David Howells 2012-03-28 629 case 4: ae3a197e3d0bfe David Howells 2012-03-28 630 return __cmpxchg_u32(ptr, old, new); ae3a197e3d0bfe David Howells 2012-03-28 631 #ifdef CONFIG_PPC64 ae3a197e3d0bfe David Howells 2012-03-28 632 case 8: ae3a197e3d0bfe David Howells 2012-03-28 633 return __cmpxchg_u64(ptr, old, new); ae3a197e3d0bfe David Howells 2012-03-28 634 #endif ae3a197e3d0bfe David Howells 2012-03-28 635 } 10d8b1480e6966 pan xinhui 2016-02-23 636 BUILD_BUG_ON_MSG(1, "Unsupported size for __cmpxchg"); ae3a197e3d0bfe David Howells 2012-03-28 637 return old; ae3a197e3d0bfe David Howells 2012-03-28 638 } ae3a197e3d0bfe David Howells 2012-03-28 639 :::::: The code at line 626 was first introduced by commit :::::: d0563a1297e234ed37f6b51c2e9321accebd1839 powerpc: Implement {cmp}xchg for u8 and u16 :::::: TO: Pan Xinhui <xinhui.pan@xxxxxxxxxxxxxxxxxx> :::::: CC: Michael Ellerman <mpe@xxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
