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charset=us-ascii Content-Disposition: inline tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: e42b1a9a2557aa94fee47f078633677198386a52 commit: 453924de6212ac159f946b75c6b59918e2e30944 afs: Overhaul invalidation handling to better support RO volumes date: 10 months ago config: powerpc64-randconfig-r111-20241029 (https://download.01.org/0day-ci/archive/20241029/202410291254.6OenFxNK-lkp@intel.com/config) compiler: powerpc64-linux-gcc (GCC) 14.1.0 reproduce: (https://download.01.org/0day-ci/archive/20241029/202410291254.6OenFxNK-lkp@intel.com/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 | Closes: https://lore.kernel.org/oe-kbuild-all/202410291254.6OenFxNK-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) fs/afs/callback.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:241:47: sparse: sparse: cast truncates bits from constant value (8000000000000000 becomes 0) arch/powerpc/include/asm/cmpxchg.h:243:48: sparse: sparse: cast truncates bits from constant value (8000000000000000 becomes 0) fs/afs/callback.c:146:22: sparse: sparse: context imbalance in 'afs_lookup_volume_rcu' - different lock contexts for basic block -- fs/afs/rotate.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:241:47: sparse: sparse: cast truncates bits from constant value (8000000000000000 becomes 0) arch/powerpc/include/asm/cmpxchg.h:243:48: sparse: sparse: cast truncates bits from constant value (8000000000000000 becomes 0) vim +241 arch/powerpc/include/asm/cmpxchg.h ae3a197e3d0bfe David Howells 2012-03-28 235 ae3a197e3d0bfe David Howells 2012-03-28 236 static __always_inline unsigned long 26760fc19a7e66 Boqun Feng 2015-12-15 237 __xchg_relaxed(void *ptr, unsigned long x, unsigned int size) ae3a197e3d0bfe David Howells 2012-03-28 238 { ae3a197e3d0bfe David Howells 2012-03-28 239 switch (size) { d0563a1297e234 Pan Xinhui 2016-04-27 240 case 1: d0563a1297e234 Pan Xinhui 2016-04-27 @241 return __xchg_u8_relaxed(ptr, x); d0563a1297e234 Pan Xinhui 2016-04-27 242 case 2: d0563a1297e234 Pan Xinhui 2016-04-27 243 return __xchg_u16_relaxed(ptr, x); ae3a197e3d0bfe David Howells 2012-03-28 244 case 4: 26760fc19a7e66 Boqun Feng 2015-12-15 245 return __xchg_u32_relaxed(ptr, x); ae3a197e3d0bfe David Howells 2012-03-28 246 #ifdef CONFIG_PPC64 ae3a197e3d0bfe David Howells 2012-03-28 247 case 8: 26760fc19a7e66 Boqun Feng 2015-12-15 248 return __xchg_u64_relaxed(ptr, x); ae3a197e3d0bfe David Howells 2012-03-28 249 #endif ae3a197e3d0bfe David Howells 2012-03-28 250 } 068550631fbe0b Andrzej Hajda 2023-01-18 251 BUILD_BUG_ON_MSG(1, "Unsupported size for __xchg_relaxed"); ae3a197e3d0bfe David Howells 2012-03-28 252 return x; ae3a197e3d0bfe David Howells 2012-03-28 253 } 9eaa82935dccb7 Mark Rutland 2021-05-25 254 #define arch_xchg_local(ptr,x) \ ae3a197e3d0bfe David Howells 2012-03-28 255 ({ \ ae3a197e3d0bfe David Howells 2012-03-28 256 __typeof__(*(ptr)) _x_ = (x); \ 26760fc19a7e66 Boqun Feng 2015-12-15 257 (__typeof__(*(ptr))) __xchg_local((ptr), \ 26760fc19a7e66 Boqun Feng 2015-12-15 258 (unsigned long)_x_, sizeof(*(ptr))); \ ae3a197e3d0bfe David Howells 2012-03-28 259 }) ae3a197e3d0bfe David Howells 2012-03-28 260 :::::: The code at line 241 was first introduced by commit :::::: d0563a1297e234ed37f6b51c2e9321accebd1839 powerpc: Implement {cmp}xchg for u8 and u16 :::::: TO: Pan Xinhui :::::: CC: Michael Ellerman -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki