init/init_task.c:125:28: sparse: sparse: incorrect type in initializer (different address spaces)
From: kernel test robot
Date: Mon Jun 22 2026 - 08:31:53 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ef0c9f75a19532d7675384708fc8621e10850104
commit: 6b1c66c9cca99bf00386481c7b2aa7394c26d8b8 exec_state: relocate dumpable information
date: 4 weeks ago
config: um-randconfig-r132-20260622 (https://download.01.org/0day-ci/archive/20260622/202606222031.BbKqRA55-lkp@xxxxxxxxx/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260622/202606222031.BbKqRA55-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
| Fixes: 6b1c66c9cca9 ("exec_state: relocate dumpable information")
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606222031.BbKqRA55-lkp@xxxxxxxxx/
sparse warnings: (new ones prefixed by >>)
>> init/init_task.c:125:28: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_exec_state [noderef] __rcu *exec_state @@ got struct task_exec_state * @@
init/init_task.c:125:28: sparse: expected struct task_exec_state [noderef] __rcu *exec_state
init/init_task.c:125:28: sparse: got struct task_exec_state *
init/init_task.c:156:28: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct [noderef] __rcu *real_parent @@ got struct task_struct * @@
init/init_task.c:156:28: sparse: expected struct task_struct [noderef] __rcu *real_parent
init/init_task.c:156:28: sparse: got struct task_struct *
init/init_task.c:157:28: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct [noderef] __rcu *parent @@ got struct task_struct * @@
init/init_task.c:157:28: sparse: expected struct task_struct [noderef] __rcu *parent
init/init_task.c:157:28: sparse: got struct task_struct *
init/init_task.c:171:28: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sighand_struct [noderef] __rcu *sighand @@ got struct sighand_struct * @@
init/init_task.c:171:28: sparse: expected struct sighand_struct [noderef] __rcu *sighand
init/init_task.c:171:28: sparse: got struct sighand_struct *
vim +125 init/init_task.c
100
101 /*
102 * Set up the first task table, touch at your own risk!. Base=0,
103 * limit=0x1fffff (=2MB)
104 */
105 struct task_struct init_task __aligned(L1_CACHE_BYTES) = {
106 #ifdef CONFIG_THREAD_INFO_IN_TASK
107 .thread_info = INIT_THREAD_INFO(init_task),
108 .stack_refcount = REFCOUNT_INIT(1),
109 #endif
110 .__state = 0,
111 .stack = init_stack,
112 .usage = REFCOUNT_INIT(2),
113 .flags = PF_KTHREAD,
114 .prio = MAX_PRIO - 20,
115 .static_prio = MAX_PRIO - 20,
116 .normal_prio = MAX_PRIO - 20,
117 .policy = SCHED_NORMAL,
118 .cpus_ptr = &init_task.cpus_mask,
119 .user_cpus_ptr = NULL,
120 .cpus_mask = CPU_MASK_ALL,
121 .max_allowed_capacity = SCHED_CAPACITY_SCALE,
122 .nr_cpus_allowed= NR_CPUS,
123 .mm = NULL,
124 .active_mm = &init_mm,
> 125 .exec_state = &init_task_exec_state,
126 .restart_block = {
127 .fn = do_no_restart_syscall,
128 },
129 .se = {
130 .group_node = LIST_HEAD_INIT(init_task.se.group_node),
131 },
132 .rt = {
133 .run_list = LIST_HEAD_INIT(init_task.rt.run_list),
134 .time_slice = RR_TIMESLICE,
135 },
136 .tasks = LIST_HEAD_INIT(init_task.tasks),
137 #ifdef CONFIG_SMP
138 .pushable_tasks = PLIST_NODE_INIT(init_task.pushable_tasks, MAX_PRIO),
139 #endif
140 #ifdef CONFIG_CGROUP_SCHED
141 .sched_task_group = &root_task_group,
142 #endif
143 #ifdef CONFIG_SCHED_CLASS_EXT
144 .scx = {
145 .dsq_list.node = LIST_HEAD_INIT(init_task.scx.dsq_list.node),
146 .sticky_cpu = -1,
147 .holding_cpu = -1,
148 .runnable_node = LIST_HEAD_INIT(init_task.scx.runnable_node),
149 .runnable_at = INITIAL_JIFFIES,
150 .ddsp_dsq_id = SCX_DSQ_INVALID,
151 .slice = SCX_SLICE_DFL,
152 },
153 #endif
154 .ptraced = LIST_HEAD_INIT(init_task.ptraced),
155 .ptrace_entry = LIST_HEAD_INIT(init_task.ptrace_entry),
156 .real_parent = &init_task,
157 .parent = &init_task,
158 .children = LIST_HEAD_INIT(init_task.children),
159 .sibling = LIST_HEAD_INIT(init_task.sibling),
160 .group_leader = &init_task,
161 RCU_POINTER_INITIALIZER(real_cred, &init_cred),
162 RCU_POINTER_INITIALIZER(cred, &init_cred),
163 .comm = INIT_TASK_COMM,
164 .thread = INIT_THREAD,
165 .fs = &init_fs,
166 .files = &init_files,
167 #ifdef CONFIG_IO_URING
168 .io_uring = NULL,
169 #endif
170 .signal = &init_signals,
171 .sighand = &init_sighand,
172 .nsproxy = &init_nsproxy,
173 .pending = {
174 .list = LIST_HEAD_INIT(init_task.pending.list),
175 .signal = {{0}}
176 },
177 .blocked = {{0}},
178 .alloc_lock = __SPIN_LOCK_UNLOCKED(init_task.alloc_lock),
179 .journal_info = NULL,
180 INIT_CPU_TIMERS(init_task)
181 .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(init_task.pi_lock),
182 .blocked_lock = __RAW_SPIN_LOCK_UNLOCKED(init_task.blocked_lock),
183 .timer_slack_ns = 50000, /* 50 usec default slack */
184 .thread_pid = &init_struct_pid,
185 .thread_node = LIST_HEAD_INIT(init_signals.thread_head),
186 #ifdef CONFIG_AUDIT
187 .loginuid = INVALID_UID,
188 .sessionid = AUDIT_SID_UNSET,
189 #endif
190 #ifdef CONFIG_PERF_EVENTS
191 .perf_event_mutex = __MUTEX_INITIALIZER(init_task.perf_event_mutex),
192 .perf_event_list = LIST_HEAD_INIT(init_task.perf_event_list),
193 #endif
194 #ifdef CONFIG_PREEMPT_RCU
195 .rcu_read_lock_nesting = 0,
196 .rcu_read_unlock_special.s = 0,
197 .rcu_node_entry = LIST_HEAD_INIT(init_task.rcu_node_entry),
198 .rcu_blocked_node = NULL,
199 #endif
200 #ifdef CONFIG_TASKS_RCU
201 .rcu_tasks_holdout = false,
202 .rcu_tasks_holdout_list = LIST_HEAD_INIT(init_task.rcu_tasks_holdout_list),
203 .rcu_tasks_idle_cpu = -1,
204 .rcu_tasks_exit_list = LIST_HEAD_INIT(init_task.rcu_tasks_exit_list),
205 #endif
206 #ifdef CONFIG_TASKS_TRACE_RCU
207 .trc_reader_nesting = 0,
208 #endif
209 #ifdef CONFIG_CPUSETS
210 .mems_allowed_seq = SEQCNT_SPINLOCK_ZERO(init_task.mems_allowed_seq,
211 &init_task.alloc_lock),
212 #endif
213 #ifdef CONFIG_RT_MUTEXES
214 .pi_waiters = RB_ROOT_CACHED,
215 .pi_top_task = NULL,
216 #endif
217 INIT_PREV_CPUTIME(init_task)
218 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
219 .vtime.seqcount = SEQCNT_ZERO(init_task.vtime_seqcount),
220 .vtime.starttime = 0,
221 .vtime.state = VTIME_SYS,
222 #endif
223 #ifdef CONFIG_NUMA_BALANCING
224 .numa_preferred_nid = NUMA_NO_NODE,
225 .numa_group = NULL,
226 .numa_faults = NULL,
227 #endif
228 #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
229 .kasan_depth = 1,
230 #endif
231 #ifdef CONFIG_KCSAN
232 .kcsan_ctx = {
233 .scoped_accesses = {LIST_POISON1, NULL},
234 },
235 #endif
236 #ifdef CONFIG_TRACE_IRQFLAGS
237 .softirqs_enabled = 1,
238 #endif
239 #ifdef CONFIG_LOCKDEP
240 .lockdep_depth = 0, /* no locks held yet */
241 .curr_chain_key = INITIAL_CHAIN_KEY,
242 .lockdep_recursion = 0,
243 #endif
244 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
245 .ret_stack = NULL,
246 .tracing_graph_pause = ATOMIC_INIT(0),
247 #endif
248 #if defined(CONFIG_TRACING) && defined(CONFIG_PREEMPTION)
249 .trace_recursion = 0,
250 #endif
251 #ifdef CONFIG_LIVEPATCH
252 .patch_state = KLP_TRANSITION_IDLE,
253 #endif
254 #ifdef CONFIG_SECURITY
255 .security = NULL,
256 #endif
257 #ifdef CONFIG_SECCOMP_FILTER
258 .seccomp = { .filter_count = ATOMIC_INIT(0) },
259 #endif
260 #ifdef CONFIG_SCHED_MM_CID
261 .mm_cid = { .cid = MM_CID_UNSET, },
262 #endif
263 };
264 EXPORT_SYMBOL(init_task);
265
--
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