[kbuild-all] arch/mips/kernel/syscall.c:173:31: sparse: sparse: incorrect type in initializer (different address spaces)

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: a90af8f15bdc9449ee2d24e1d73fa3f7e8633f81 commit: ddb002d6d6af12c45dd9d565cadf0f40b36b7c25 MIPS: uaccess: Reduce number of nested macros date: 7 months ago config: mips-randconfig-s032-20211116 (attached as .config) compiler: mipsel-linux-gcc (GCC) 11.2.0 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: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout ddb002d6d6af12c45dd9d565cadf0f40b36b7c25 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) command-line: note: in included file: builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined builtin:0:0: sparse: this was the original definition arch/mips/kernel/syscall.c:173:31: sparse: expected unsigned int const [noderef] __user *__gu_ptr arch/mips/kernel/syscall.c:173:31: sparse: got unsigned int * arch/mips/kernel/syscall.c:174:32: sparse: expected unsigned int [noderef] __user *__pu_ptr arch/mips/kernel/syscall.c:174:32: sparse: got unsigned int * -- command-line: note: in included file: builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined builtin:0:0: sparse: this was the original definition arch/mips/kernel/ptrace.c: note: in included file: arch/mips/include/asm/syscall.h:70:17: sparse: expected int const [noderef] __user *__p arch/mips/include/asm/syscall.h:70:17: sparse: got int * -- command-line: note: in included file: builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined builtin:0:0: sparse: this was the original definition arch/mips/kernel/signal.c:280:13: sparse: sparse: cast removes address space '__user' of expression arch/mips/kernel/signal.c:280:13: sparse: sparse: cast removes address space '__user' of expression arch/mips/kernel/signal.c:280:13: sparse: expected unsigned int [noderef] __user *__pu_ptr arch/mips/kernel/signal.c:280:13: sparse: got unsigned int [usertype] * arch/mips/kernel/signal.c:280:13: sparse: sparse: cast removes address space '__user' of expression arch/mips/kernel/signal.c:293:23: sparse: sparse: cast removes address space '__user' of expression arch/mips/kernel/signal.c:293:23: sparse: sparse: cast removes address space '__user' of expression arch/mips/kernel/signal.c:293:23: sparse: expected unsigned int const [noderef] __user *__gu_ptr arch/mips/kernel/signal.c:293:23: sparse: got unsigned int * arch/mips/kernel/signal.c:300:23: sparse: sparse: cast removes address space '__user' of expression arch/mips/kernel/signal.c:300:23: sparse: sparse: cast removes address space '__user' of expression arch/mips/kernel/signal.c:300:23: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned int const [noderef] __user *__gu_ptr @@ got unsigned int * @@ arch/mips/kernel/signal.c:300:23: sparse: expected unsigned int const [noderef] __user *__gu_ptr arch/mips/kernel/signal.c:300:23: sparse: got unsigned int * arch/mips/kernel/signal.c:630:17: sparse: sparse: symbol 'sys_sigreturn' was not declared. Should it be static? arch/mips/kernel/signal.c:667:17: sparse: sparse: symbol 'sys_rt_sigreturn' was not declared. Should it be static? arch/mips/kernel/signal.c:157:14: sparse: sparse: cast removes address space '__user' of expression arch/mips/kernel/signal.c:157:12: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ucontext [noderef] __user *uc @@ got struct ucontext * @@ arch/mips/kernel/signal.c:157:12: sparse: expected struct ucontext [noderef] __user *uc arch/mips/kernel/signal.c:157:12: sparse: got struct ucontext * arch/mips/kernel/signal.c:157:14: sparse: sparse: cast removes address space '__user' of expression arch/mips/kernel/signal.c:157:12: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ucontext [noderef] __user *uc @@ got struct ucontext * @@ arch/mips/kernel/signal.c:157:12: sparse: expected struct ucontext [noderef] __user *uc arch/mips/kernel/signal.c:157:12: sparse: got struct ucontext * -- command-line: note: in included file: builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined builtin:0:0: sparse: this was the original definition arch/mips/sibyte/common/sb_tbprof.c:449:14: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __user *p @@ got char *buf @@ arch/mips/sibyte/common/sb_tbprof.c:449:14: sparse: expected void const [noderef] __user *p arch/mips/sibyte/common/sb_tbprof.c:449:14: sparse: got char *buf arch/mips/sibyte/common/sb_tbprof.c:464:38: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __user *to @@ got char *dest @@ arch/mips/sibyte/common/sb_tbprof.c:464:38: sparse: expected void [noderef] __user *to arch/mips/sibyte/common/sb_tbprof.c:464:38: sparse: got char *dest arch/mips/sibyte/common/sb_tbprof.c:515:23: sparse: expected int [noderef] __user *__p arch/mips/sibyte/common/sb_tbprof.c:515:23: sparse: got int * arch/mips/sibyte/common/sb_tbprof.c:531:27: sparse: sparse: incorrect type in initializer (incompatible argument 2 (different address spaces)) @@ expected int ( *read )( ... ) @@ got int ( * )( ... ) @@ arch/mips/sibyte/common/sb_tbprof.c:531:27: sparse: expected int ( *read )( ... ) arch/mips/sibyte/common/sb_tbprof.c:531:27: sparse: got int ( * )( ... ) -- command-line: note: in included file: builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined builtin:0:0: sparse: this was the original definition kernel/ptrace.c:53:22: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/ptrace.c:53:22: sparse: struct task_struct * kernel/ptrace.c:53:22: sparse: struct task_struct [noderef] __rcu * kernel/ptrace.c:72:23: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct [noderef] __rcu *parent @@ got struct task_struct *new_parent @@ kernel/ptrace.c:72:23: sparse: expected struct task_struct [noderef] __rcu *parent kernel/ptrace.c:72:23: sparse: got struct task_struct *new_parent kernel/ptrace.c:73:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct cred const [noderef] __rcu *ptracer_cred @@ got struct cred const * @@ kernel/ptrace.c:73:29: sparse: expected struct cred const [noderef] __rcu *ptracer_cred kernel/ptrace.c:73:29: sparse: got struct cred const * kernel/ptrace.c:127:18: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct cred const *old_cred @@ got struct cred const [noderef] __rcu *ptracer_cred @@ kernel/ptrace.c:127:18: sparse: expected struct cred const *old_cred kernel/ptrace.c:127:18: sparse: got struct cred const [noderef] __rcu *ptracer_cred kernel/ptrace.c:131:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/ptrace.c:131:25: sparse: expected struct spinlock [usertype] *lock kernel/ptrace.c:131:25: sparse: got struct spinlock [noderef] __rcu * kernel/ptrace.c:169:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/ptrace.c:169:27: sparse: expected struct spinlock [usertype] *lock kernel/ptrace.c:169:27: sparse: got struct spinlock [noderef] __rcu * kernel/ptrace.c:181:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/ptrace.c:181:28: sparse: expected struct spinlock [usertype] *lock kernel/ptrace.c:181:28: sparse: got struct spinlock [noderef] __rcu * kernel/ptrace.c:186:30: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/ptrace.c:186:30: sparse: expected struct spinlock [usertype] *lock kernel/ptrace.c:186:30: sparse: got struct spinlock [noderef] __rcu * kernel/ptrace.c:196:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/ptrace.c:196:9: sparse: struct task_struct [noderef] __rcu * kernel/ptrace.c:196:9: sparse: struct task_struct * kernel/ptrace.c:241:44: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/ptrace.c:241:44: sparse: struct task_struct [noderef] __rcu * kernel/ptrace.c:241:44: sparse: struct task_struct * kernel/ptrace.c:415:24: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/ptrace.c:415:24: sparse: expected struct spinlock [usertype] *lock kernel/ptrace.c:415:24: sparse: got struct spinlock [noderef] __rcu * kernel/ptrace.c:438:26: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/ptrace.c:438:26: sparse: expected struct spinlock [usertype] *lock kernel/ptrace.c:438:26: sparse: got struct spinlock [noderef] __rcu * kernel/ptrace.c:474:54: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *parent @@ got struct task_struct [noderef] __rcu *parent @@ kernel/ptrace.c:474:54: sparse: expected struct task_struct *parent kernel/ptrace.c:474:54: sparse: got struct task_struct [noderef] __rcu *parent kernel/ptrace.c:482:53: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *new_parent @@ got struct task_struct [noderef] __rcu *real_parent @@ kernel/ptrace.c:482:53: sparse: expected struct task_struct *new_parent kernel/ptrace.c:482:53: sparse: got struct task_struct [noderef] __rcu *real_parent kernel/ptrace.c:530:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p1 @@ got struct task_struct [noderef] __rcu *real_parent @@ kernel/ptrace.c:530:41: sparse: expected struct task_struct *p1 kernel/ptrace.c:530:41: sparse: got struct task_struct [noderef] __rcu *real_parent kernel/ptrace.c:532:50: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sighand_struct *sigh @@ got struct sighand_struct [noderef] __rcu *sighand @@ kernel/ptrace.c:532:50: sparse: expected struct sighand_struct *sigh kernel/ptrace.c:532:50: sparse: got struct sighand_struct [noderef] __rcu *sighand kernel/ptrace.c:734:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/ptrace.c:734:37: sparse: expected struct spinlock [usertype] *lock kernel/ptrace.c:734:37: sparse: got struct spinlock [noderef] __rcu * kernel/ptrace.c:742:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/ptrace.c:742:39: sparse: expected struct spinlock [usertype] *lock kernel/ptrace.c:742:39: sparse: got struct spinlock [noderef] __rcu * kernel/ptrace.c:847:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/ptrace.c:847:37: sparse: expected struct spinlock [usertype] *lock kernel/ptrace.c:847:37: sparse: got struct spinlock [noderef] __rcu * kernel/ptrace.c:851:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/ptrace.c:851:39: sparse: expected struct spinlock [usertype] *lock kernel/ptrace.c:851:39: sparse: got struct spinlock [noderef] __rcu * kernel/ptrace.c:1081:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/ptrace.c:1081:37: sparse: expected struct spinlock [usertype] *lock kernel/ptrace.c:1081:37: sparse: got struct spinlock [noderef] __rcu * kernel/ptrace.c:1083:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/ptrace.c:1083:39: sparse: expected struct spinlock [usertype] *lock kernel/ptrace.c:1083:39: sparse: got struct spinlock [noderef] __rcu * kernel/ptrace.c:480:38: sparse: sparse: dereference of noderef expression kernel/ptrace.c: note: in included file (through include/linux/rcuwait.h, include/linux/percpu-rwsem.h, include/linux/fs.h, ...): include/linux/sched/signal.h:708:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ include/linux/sched/signal.h:708:37: sparse: expected struct spinlock [usertype] *lock include/linux/sched/signal.h:708:37: sparse: got struct spinlock [noderef] __rcu * kernel/ptrace.c:681:9: sparse: sparse: context imbalance in 'ptrace_getsiginfo' - different lock contexts for basic block include/linux/sched/signal.h:708:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ include/linux/sched/signal.h:708:37: sparse: expected struct spinlock [usertype] *lock include/linux/sched/signal.h:708:37: sparse: got struct spinlock [noderef] __rcu * kernel/ptrace.c:697:9: sparse: sparse: context imbalance in 'ptrace_setsiginfo' - different lock contexts for basic block kernel/ptrace.c:853:9: sparse: sparse: context imbalance in 'ptrace_resume' - different lock contexts for basic block kernel/ptrace.c: note: in included file: arch/mips/include/asm/syscall.h:70:17: sparse: expected int const [noderef] __user *__p arch/mips/include/asm/syscall.h:70:17: sparse: got int * kernel/ptrace.c: note: in included file (through include/linux/rcuwait.h, include/linux/percpu-rwsem.h, include/linux/fs.h, ...): include/linux/sched/signal.h:708:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ include/linux/sched/signal.h:708:37: sparse: expected struct spinlock [usertype] *lock include/linux/sched/signal.h:708:37: sparse: got struct spinlock [noderef] __rcu * include/linux/sched/signal.h:708:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ include/linux/sched/signal.h:708:37: sparse: expected struct spinlock [usertype] *lock include/linux/sched/signal.h:708:37: sparse: got struct spinlock [noderef] __rcu * kernel/ptrace.c:1229:9: sparse: sparse: context imbalance in 'ptrace_request' - different lock contexts for basic block -- command-line: note: in included file: builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined builtin:0:0: sparse: this was the original definition kernel/seccomp.c:1333:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/seccomp.c:1333:31: sparse: expected struct spinlock [usertype] *lock kernel/seccomp.c:1333:31: sparse: got struct spinlock [noderef] __rcu * kernel/seccomp.c:1345:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/seccomp.c:1345:33: sparse: expected struct spinlock [usertype] *lock kernel/seccomp.c:1345:33: sparse: got struct spinlock [noderef] __rcu * kernel/seccomp.c:1831:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/seccomp.c:1831:31: sparse: expected struct spinlock [usertype] *lock kernel/seccomp.c:1831:31: sparse: got struct spinlock [noderef] __rcu * kernel/seccomp.c:1849:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/seccomp.c:1849:33: sparse: expected struct spinlock [usertype] *lock kernel/seccomp.c:1849:33: sparse: got struct spinlock [noderef] __rcu * kernel/seccomp.c: note: in included file: arch/mips/include/asm/syscall.h:70:17: sparse: expected int const [noderef] __user *__p arch/mips/include/asm/syscall.h:70:17: sparse: got int * -- command-line: note: in included file: builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined builtin:0:0: sparse: this was the original definition drivers/w1/slaves/w1_ds28e04.c:342:13: sparse: expected char [noderef] __user *__p drivers/w1/slaves/w1_ds28e04.c:342:13: sparse: got char *buf drivers/w1/slaves/w1_ds28e04.c:356:13: sparse: expected char const [noderef] __user *__p drivers/w1/slaves/w1_ds28e04.c:356:13: sparse: got char const *buf vim +173 arch/mips/kernel/syscall.c 3c37026d43c47b Ralf Baechle 2005-04-13 96 12890d0f61fc4e Ralf Baechle 2012-12-27 97 static inline int mips_atomic_set(unsigned long addr, unsigned long new) ^1da177e4c3f41 Linus Torvalds 2005-04-16 98 { f1e39a4a616cd9 Ralf Baechle 2009-09-17 99 unsigned long old, tmp; 12890d0f61fc4e Ralf Baechle 2012-12-27 100 struct pt_regs *regs; f1e39a4a616cd9 Ralf Baechle 2009-09-17 101 unsigned int err; f1e39a4a616cd9 Ralf Baechle 2009-09-17 102 f1e39a4a616cd9 Ralf Baechle 2009-09-17 103 if (unlikely(addr & 3)) f1e39a4a616cd9 Ralf Baechle 2009-09-17 104 return -EINVAL; f1e39a4a616cd9 Ralf Baechle 2009-09-17 105 96d4f267e40f95 Linus Torvalds 2019-01-03 106 if (unlikely(!access_ok((const void __user *)addr, 4))) f1e39a4a616cd9 Ralf Baechle 2009-09-17 107 return -EINVAL; f1e39a4a616cd9 Ralf Baechle 2009-09-17 108 256ec489f1c772 Thomas Bogendoerfer 2020-08-24 109 if (cpu_has_llsc && IS_ENABLED(CONFIG_WAR_R10000_LLSC)) { f1e39a4a616cd9 Ralf Baechle 2009-09-17 110 __asm__ __volatile__ ( 378ed6f0e3c525 Paul Burton 2018-11-08 111 " .set push \n" a809d46066d517 Ralf Baechle 2014-03-30 112 " .set arch=r4000 \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 113 " li %[err], 0 \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 114 "1: ll %[old], (%[addr]) \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 115 " move %[tmp], %[new] \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 116 "2: sc %[tmp], (%[addr]) \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 117 " beqzl %[tmp], 1b \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 118 "3: \n" 0e525e48f73cc8 Maciej W. Rozycki 2014-11-15 119 " .insn \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 120 " .section .fixup,\"ax\" \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 121 "4: li %[err], %[efault] \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 122 " j 3b \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 123 " .previous \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 124 " .section __ex_table,\"a\" \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 125 " "STR(PTR)" 1b, 4b \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 126 " "STR(PTR)" 2b, 4b \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 127 " .previous \n" 378ed6f0e3c525 Paul Burton 2018-11-08 128 " .set pop \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 129 : [old] "=&r" (old), f1e39a4a616cd9 Ralf Baechle 2009-09-17 130 [err] "=&r" (err), f1e39a4a616cd9 Ralf Baechle 2009-09-17 131 [tmp] "=&r" (tmp) f1e39a4a616cd9 Ralf Baechle 2009-09-17 132 : [addr] "r" (addr), f1e39a4a616cd9 Ralf Baechle 2009-09-17 133 [new] "r" (new), f1e39a4a616cd9 Ralf Baechle 2009-09-17 134 [efault] "i" (-EFAULT) f1e39a4a616cd9 Ralf Baechle 2009-09-17 135 : "memory"); f1e39a4a616cd9 Ralf Baechle 2009-09-17 136 } else if (cpu_has_llsc) { f1e39a4a616cd9 Ralf Baechle 2009-09-17 137 __asm__ __volatile__ ( 378ed6f0e3c525 Paul Burton 2018-11-08 138 " .set push \n" fee313d4b880d4 Markos Chandras 2015-01-15 139 " .set "MIPS_ISA_ARCH_LEVEL" \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 140 " li %[err], 0 \n" 4915e1b043d628 James Hogan 2017-05-31 141 "1: \n" e84957e6ae043b Paul Burton 2019-10-01 142 " " __SYNC(full, loongson3_war) " \n" 4915e1b043d628 James Hogan 2017-05-31 143 user_ll("%[old]", "(%[addr])") f1e39a4a616cd9 Ralf Baechle 2009-09-17 144 " move %[tmp], %[new] \n" 4915e1b043d628 James Hogan 2017-05-31 145 "2: \n" 4915e1b043d628 James Hogan 2017-05-31 146 user_sc("%[tmp]", "(%[addr])") 203e090ade7357 James Hogan 2017-05-31 147 " beqz %[tmp], 1b \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 148 "3: \n" 0e525e48f73cc8 Maciej W. Rozycki 2014-11-15 149 " .insn \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 150 " .section .fixup,\"ax\" \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 151 "5: li %[err], %[efault] \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 152 " j 3b \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 153 " .previous \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 154 " .section __ex_table,\"a\" \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 155 " "STR(PTR)" 1b, 5b \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 156 " "STR(PTR)" 2b, 5b \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 157 " .previous \n" 378ed6f0e3c525 Paul Burton 2018-11-08 158 " .set pop \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 159 : [old] "=&r" (old), f1e39a4a616cd9 Ralf Baechle 2009-09-17 160 [err] "=&r" (err), f1e39a4a616cd9 Ralf Baechle 2009-09-17 161 [tmp] "=&r" (tmp) f1e39a4a616cd9 Ralf Baechle 2009-09-17 162 : [addr] "r" (addr), f1e39a4a616cd9 Ralf Baechle 2009-09-17 163 [new] "r" (new), f1e39a4a616cd9 Ralf Baechle 2009-09-17 164 [efault] "i" (-EFAULT) f1e39a4a616cd9 Ralf Baechle 2009-09-17 165 : "memory"); f1e39a4a616cd9 Ralf Baechle 2009-09-17 166 } else { f1e39a4a616cd9 Ralf Baechle 2009-09-17 167 do { f1e39a4a616cd9 Ralf Baechle 2009-09-17 168 preempt_disable(); f1e39a4a616cd9 Ralf Baechle 2009-09-17 169 ll_bit = 1; f1e39a4a616cd9 Ralf Baechle 2009-09-17 170 ll_task = current; f1e39a4a616cd9 Ralf Baechle 2009-09-17 171 preempt_enable(); f1e39a4a616cd9 Ralf Baechle 2009-09-17 172 f1e39a4a616cd9 Ralf Baechle 2009-09-17 @173 err = __get_user(old, (unsigned int *) addr); f1e39a4a616cd9 Ralf Baechle 2009-09-17 @174 err |= __put_user(new, (unsigned int *) addr); f1e39a4a616cd9 Ralf Baechle 2009-09-17 175 if (err) f1e39a4a616cd9 Ralf Baechle 2009-09-17 176 break; f1e39a4a616cd9 Ralf Baechle 2009-09-17 177 rmb(); f1e39a4a616cd9 Ralf Baechle 2009-09-17 178 } while (!ll_bit); f1e39a4a616cd9 Ralf Baechle 2009-09-17 179 } f1e39a4a616cd9 Ralf Baechle 2009-09-17 180 f1e39a4a616cd9 Ralf Baechle 2009-09-17 181 if (unlikely(err)) f1e39a4a616cd9 Ralf Baechle 2009-09-17 182 return err; f1e39a4a616cd9 Ralf Baechle 2009-09-17 183 12890d0f61fc4e Ralf Baechle 2012-12-27 184 regs = current_pt_regs(); f1e39a4a616cd9 Ralf Baechle 2009-09-17 185 regs->regs[2] = old; f1e39a4a616cd9 Ralf Baechle 2009-09-17 186 regs->regs[7] = 0; /* No error */ f1e39a4a616cd9 Ralf Baechle 2009-09-17 187 f1e39a4a616cd9 Ralf Baechle 2009-09-17 188 /* f1e39a4a616cd9 Ralf Baechle 2009-09-17 189 * Don't let your children do this ... f1e39a4a616cd9 Ralf Baechle 2009-09-17 190 */ f1e39a4a616cd9 Ralf Baechle 2009-09-17 191 __asm__ __volatile__( f1e39a4a616cd9 Ralf Baechle 2009-09-17 192 " move $29, %0 \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 193 " j syscall_exit \n" f1e39a4a616cd9 Ralf Baechle 2009-09-17 194 : /* no outputs */ f1e39a4a616cd9 Ralf Baechle 2009-09-17 195 : "r" (regs)); f1e39a4a616cd9 Ralf Baechle 2009-09-17 196 f1e39a4a616cd9 Ralf Baechle 2009-09-17 197 /* unreached. Honestly. */ f2ace93136cade Ralf Baechle 2012-12-27 198 unreachable(); f1e39a4a616cd9 Ralf Baechle 2009-09-17 199 } f1e39a4a616cd9 Ralf Baechle 2009-09-17 200 :::::: The code at line 173 was first introduced by commit :::::: f1e39a4a616cd9981a9decfd5332fd07a01abb8b MIPS: Rewrite sysmips(MIPS_ATOMIC_SET, ...) in C with inline assembler :::::: TO: Ralf Baechle <ralf(a)linux-mips.org&gt; :::::: CC: Ralf Baechle <ralf(a)linux-mips.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org