From: kernel test robot <lkp@intel.com> To: Liam Beguin <liambeguin@gmail.com> Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Helge Deller <deller@gmx.de> Subject: arch/parisc/include/asm/cmpxchg.h:75:61: sparse: sparse: cast truncates bits from constant value (e0f510cc becomes cc) Date: Tue, 29 Dec 2020 19:21:18 +0800 [thread overview] Message-ID: <202012291914.T5Agcn99-lkp@intel.com> (raw) [-- Attachment #1: Type: text/plain, Size: 2933 bytes --] tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: dea8dcf2a9fa8cc540136a6cd885c3beece16ec3 commit: b344d6a83d01c52fddbefa6b3b4764da5b1022a0 parisc: add support for cmpxchg on u8 pointers date: 5 months ago config: parisc-randconfig-s031-20201229 (attached as .config) compiler: hppa-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: v0.6.3-184-g1b896707-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b344d6a83d01c52fddbefa6b3b4764da5b1022a0 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout b344d6a83d01c52fddbefa6b3b4764da5b1022a0 # 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=parisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com> "sparse warnings: (new ones prefixed by >>)" fs/erofs/utils.c: note: in included file (through arch/parisc/include/asm/atomic.h, include/linux/atomic.h, arch/parisc/include/asm/bitops.h, ...): >> arch/parisc/include/asm/cmpxchg.h:75:61: sparse: sparse: cast truncates bits from constant value (e0f510cc becomes cc) -- fs/erofs/zdata.c: note: in included file (through arch/parisc/include/asm/atomic.h, include/linux/atomic.h, arch/parisc/include/asm/bitops.h, ...): >> arch/parisc/include/asm/cmpxchg.h:75:61: sparse: sparse: cast truncates bits from constant value (e0f510cc becomes cc) arch/parisc/include/asm/cmpxchg.h:75:52: sparse: sparse: cast truncates bits from constant value (5f0ecafe becomes fe) arch/parisc/include/asm/cmpxchg.h:75:52: sparse: sparse: cast truncates bits from constant value (5f0ecafe becomes fe) arch/parisc/include/asm/cmpxchg.h:75:61: sparse: sparse: cast truncates bits from constant value (5f0edead becomes ad) vim +75 arch/parisc/include/asm/cmpxchg.h 64 65 /* don't worry...optimizer will get rid of most of this */ 66 static inline unsigned long 67 __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new_, int size) 68 { 69 switch (size) { 70 #ifdef CONFIG_64BIT 71 case 8: return __cmpxchg_u64((u64 *)ptr, old, new_); 72 #endif 73 case 4: return __cmpxchg_u32((unsigned int *)ptr, 74 (unsigned int)old, (unsigned int)new_); > 75 case 1: return __cmpxchg_u8((u8 *)ptr, (u8)old, (u8)new_); 76 } 77 __cmpxchg_called_with_bad_pointer(); 78 return old; 79 } 80 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org [-- Attachment #2: .config.gz --] [-- Type: application/gzip, Size: 32617 bytes --]
WARNING: multiple messages have this Message-ID (diff)
From: kernel test robot <lkp@intel.com> To: kbuild-all@lists.01.org Subject: arch/parisc/include/asm/cmpxchg.h:75:61: sparse: sparse: cast truncates bits from constant value (e0f510cc becomes cc) Date: Tue, 29 Dec 2020 19:21:18 +0800 [thread overview] Message-ID: <202012291914.T5Agcn99-lkp@intel.com> (raw) [-- Attachment #1: Type: text/plain, Size: 2990 bytes --] tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: dea8dcf2a9fa8cc540136a6cd885c3beece16ec3 commit: b344d6a83d01c52fddbefa6b3b4764da5b1022a0 parisc: add support for cmpxchg on u8 pointers date: 5 months ago config: parisc-randconfig-s031-20201229 (attached as .config) compiler: hppa-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: v0.6.3-184-g1b896707-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b344d6a83d01c52fddbefa6b3b4764da5b1022a0 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout b344d6a83d01c52fddbefa6b3b4764da5b1022a0 # 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=parisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com> "sparse warnings: (new ones prefixed by >>)" fs/erofs/utils.c: note: in included file (through arch/parisc/include/asm/atomic.h, include/linux/atomic.h, arch/parisc/include/asm/bitops.h, ...): >> arch/parisc/include/asm/cmpxchg.h:75:61: sparse: sparse: cast truncates bits from constant value (e0f510cc becomes cc) -- fs/erofs/zdata.c: note: in included file (through arch/parisc/include/asm/atomic.h, include/linux/atomic.h, arch/parisc/include/asm/bitops.h, ...): >> arch/parisc/include/asm/cmpxchg.h:75:61: sparse: sparse: cast truncates bits from constant value (e0f510cc becomes cc) arch/parisc/include/asm/cmpxchg.h:75:52: sparse: sparse: cast truncates bits from constant value (5f0ecafe becomes fe) arch/parisc/include/asm/cmpxchg.h:75:52: sparse: sparse: cast truncates bits from constant value (5f0ecafe becomes fe) arch/parisc/include/asm/cmpxchg.h:75:61: sparse: sparse: cast truncates bits from constant value (5f0edead becomes ad) vim +75 arch/parisc/include/asm/cmpxchg.h 64 65 /* don't worry...optimizer will get rid of most of this */ 66 static inline unsigned long 67 __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new_, int size) 68 { 69 switch (size) { 70 #ifdef CONFIG_64BIT 71 case 8: return __cmpxchg_u64((u64 *)ptr, old, new_); 72 #endif 73 case 4: return __cmpxchg_u32((unsigned int *)ptr, 74 (unsigned int)old, (unsigned int)new_); > 75 case 1: return __cmpxchg_u8((u8 *)ptr, (u8)old, (u8)new_); 76 } 77 __cmpxchg_called_with_bad_pointer(); 78 return old; 79 } 80 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org [-- Attachment #2: config.gz --] [-- Type: application/gzip, Size: 32617 bytes --]
next reply other threads:[~2020-12-29 11:22 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-12-29 11:21 kernel test robot [this message] 2020-12-29 11:21 ` arch/parisc/include/asm/cmpxchg.h:75:61: sparse: sparse: cast truncates bits from constant value (e0f510cc becomes cc) kernel test robot -- strict thread matches above, loose matches on Subject: below -- 2020-08-21 0:57 kernel test robot 2020-08-21 0:57 ` kernel test robot
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