tree: https://github.com/davidhildenbrand/linux rmap_batching head: 865e6d6a176a1f50bcbb7dd1d6a57b803e398039 commit: e65050eda564d19ea9e6dc8dd3d5e5ccc69bc6ec [86/136] mm/mempolicy: implement the sysfs-based weighted_interleave interface config: x86_64-randconfig-r131-20240127 (https://download.01.org/0day-ci/archive/20240128/202401280905.OUS18DsI-lkp@xxxxxxxxx/config) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240128/202401280905.OUS18DsI-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/202401280905.OUS18DsI-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) mm/mempolicy.c:3097:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned char [noderef] [usertype] __rcu *table @@ got unsigned char * @@ mm/mempolicy.c:3097:15: sparse: expected unsigned char [noderef] [usertype] __rcu *table mm/mempolicy.c:3097:15: sparse: got unsigned char * mm/mempolicy.c:3127:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned char [noderef] [usertype] __rcu *new @@ got void * @@ mm/mempolicy.c:3127:13: sparse: expected unsigned char [noderef] [usertype] __rcu *new mm/mempolicy.c:3127:13: sparse: got void * mm/mempolicy.c:3132:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned char [noderef] [usertype] __rcu *old @@ got unsigned char * @@ mm/mempolicy.c:3132:13: sparse: expected unsigned char [noderef] [usertype] __rcu *old mm/mempolicy.c:3132:13: sparse: got unsigned char * >> mm/mempolicy.c:3135:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const * @@ got unsigned char [noderef] [usertype] __rcu *new @@ mm/mempolicy.c:3135:17: sparse: expected void const * mm/mempolicy.c:3135:17: sparse: got unsigned char [noderef] [usertype] __rcu *new mm/mempolicy.c:3135:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const * @@ got unsigned char [noderef] [usertype] __rcu *old @@ mm/mempolicy.c:3135:17: sparse: expected void const * mm/mempolicy.c:3135:17: sparse: got unsigned char [noderef] [usertype] __rcu *old >> mm/mempolicy.c:3135:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const * @@ got unsigned char [noderef] [usertype] __rcu *new @@ mm/mempolicy.c:3135:17: sparse: expected void const * mm/mempolicy.c:3135:17: sparse: got unsigned char [noderef] [usertype] __rcu *new mm/mempolicy.c:3135:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const * @@ got unsigned char [noderef] [usertype] __rcu *old @@ mm/mempolicy.c:3135:17: sparse: expected void const * mm/mempolicy.c:3135:17: sparse: got unsigned char [noderef] [usertype] __rcu *old >> mm/mempolicy.c:3135:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *p @@ got unsigned char [noderef] [usertype] __rcu *new @@ mm/mempolicy.c:3135:17: sparse: expected void *p mm/mempolicy.c:3135:17: sparse: got unsigned char [noderef] [usertype] __rcu *new >> mm/mempolicy.c:3135:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const *q @@ got unsigned char [noderef] [usertype] __rcu *old @@ mm/mempolicy.c:3135:17: sparse: expected void const *q mm/mempolicy.c:3135:17: sparse: got unsigned char [noderef] [usertype] __rcu *old mm/mempolicy.c:3137:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const * @@ got unsigned char [noderef] [usertype] __rcu *new @@ mm/mempolicy.c:3137:17: sparse: expected void const * mm/mempolicy.c:3137:17: sparse: got unsigned char [noderef] [usertype] __rcu *new mm/mempolicy.c:3137:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const * @@ got unsigned char [noderef] [usertype] __rcu *new @@ mm/mempolicy.c:3137:17: sparse: expected void const * mm/mempolicy.c:3137:17: sparse: got unsigned char [noderef] [usertype] __rcu *new mm/mempolicy.c:3137:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *p @@ got unsigned char [noderef] [usertype] __rcu *new @@ mm/mempolicy.c:3137:17: sparse: expected void *p mm/mempolicy.c:3137:17: sparse: got unsigned char [noderef] [usertype] __rcu *new mm/mempolicy.c:3142:15: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const *objp @@ got unsigned char [noderef] [usertype] __rcu *old @@ mm/mempolicy.c:3142:15: sparse: expected void const *objp mm/mempolicy.c:3142:15: sparse: got unsigned char [noderef] [usertype] __rcu *old mm/mempolicy.c:3239:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned char [noderef] [usertype] __rcu *old @@ got unsigned char * @@ mm/mempolicy.c:3239:13: sparse: expected unsigned char [noderef] [usertype] __rcu *old mm/mempolicy.c:3239:13: sparse: got unsigned char * mm/mempolicy.c:3245:15: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const *objp @@ got unsigned char [noderef] [usertype] __rcu *old @@ mm/mempolicy.c:3245:15: sparse: expected void const *objp mm/mempolicy.c:3245:15: sparse: got unsigned char [noderef] [usertype] __rcu *old mm/mempolicy.c: note: in included file (through include/linux/mmzone.h, include/linux/mempolicy.h): include/linux/page-flags.h:242:46: sparse: sparse: self-comparison always evaluates to false mm/mempolicy.c: note: in included file (through include/linux/rbtree.h, include/linux/mm_types.h, include/linux/mmzone.h, ...): include/linux/rcupdate.h:781:9: sparse: sparse: context imbalance in 'queue_folios_pte_range' - unexpected unlock mm/mempolicy.c: note: in included file (through arch/x86/include/asm/uaccess.h, include/linux/uaccess.h, include/linux/sched/task.h, ...): arch/x86/include/asm/uaccess_64.h:88:24: sparse: sparse: cast removes address space '__user' of expression mm/mempolicy.c:3098:31: sparse: sparse: dereference of noderef expression mm/mempolicy.c:3138:12: sparse: sparse: dereference of noderef expression vim +3135 mm/mempolicy.c 3103 3104 static ssize_t node_store(struct kobject *kobj, struct kobj_attribute *attr, 3105 const char *buf, size_t count) 3106 { 3107 struct iw_node_attr *node_attr; 3108 u8 __rcu *new; 3109 u8 __rcu *old; 3110 u8 weight = 0; 3111 3112 node_attr = container_of(attr, struct iw_node_attr, kobj_attr); 3113 if (count == 0 || sysfs_streq(buf, "")) 3114 weight = 0; 3115 else if (kstrtou8(buf, 0, &weight)) 3116 return -EINVAL; 3117 3118 /* 3119 * The default weight is 1 (for now), when the kernel-internal 3120 * default weight array is implemented, this should be updated to 3121 * collect the system-default weight of the node if the user passes 0. 3122 */ 3123 if (!weight) 3124 weight = 1; 3125 3126 /* We only need to allocate up to the number of possible nodes */ 3127 new = kmalloc(nr_node_ids, GFP_KERNEL); 3128 if (!new) 3129 return -ENOMEM; 3130 3131 mutex_lock(&iw_table_lock); 3132 old = rcu_dereference_protected(iw_table, 3133 lockdep_is_held(&iw_table_lock)); 3134 if (old) > 3135 memcpy(new, old, nr_node_ids); 3136 else 3137 memset(new, 1, nr_node_ids); 3138 new[node_attr->nid] = weight; 3139 rcu_assign_pointer(iw_table, new); 3140 mutex_unlock(&iw_table_lock); 3141 synchronize_rcu(); 3142 kfree(old); 3143 return count; 3144 } 3145 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
