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hc
2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 
 kernel/init/init_task.c
....@@ -10,9 +10,9 @@
1010 #include <linux/fs.h>
1111 #include <linux/mm.h>
1212 #include <linux/audit.h>
13
+#include <linux/numa.h>
1314 #include <linux/scs.h>
1415 
15
-#include <asm/pgtable.h>
1616 #include <linux/uaccess.h>
1717 
1818 static struct signal_struct init_signals = {
....@@ -26,12 +26,11 @@
2626 	.multiprocess	= HLIST_HEAD_INIT,
2727 	.rlim		= INIT_RLIMITS,
2828 	.cred_guard_mutex = __MUTEX_INITIALIZER(init_signals.cred_guard_mutex),
29
+	.exec_update_lock = __RWSEM_INITIALIZER(init_signals.exec_update_lock),
2930 #ifdef CONFIG_POSIX_TIMERS
3031 	.posix_timers = LIST_HEAD_INIT(init_signals.posix_timers),
3132 	.cputimer	= {
3233 		.cputime_atomic	= INIT_CPUTIME_ATOMIC,
33
-		.running	= false,
34
-		.checking_timer = false,
3534 	},
3635 #endif
3736 	INIT_CPU_TIMERS(init_signals)
....@@ -45,16 +44,17 @@
4544 };
4645 
4746 static struct sighand_struct init_sighand = {
48
-	.count		= ATOMIC_INIT(1),
47
+	.count		= REFCOUNT_INIT(1),
4948 	.action		= { { { .sa_handler = SIG_DFL, } }, },
5049 	.siglock	= __SPIN_LOCK_UNLOCKED(init_sighand.siglock),
5150 	.signalfd_wqh	= __WAIT_QUEUE_HEAD_INITIALIZER(init_sighand.signalfd_wqh),
5251 };
5352 
54
-#if defined(CONFIG_POSIX_TIMERS) && defined(CONFIG_PREEMPT_RT_BASE)
55
-# define INIT_TIMER_LIST		.posix_timer_list = NULL,
56
-#else
57
-# define INIT_TIMER_LIST
53
+#ifdef CONFIG_SHADOW_CALL_STACK
54
+unsigned long init_shadow_call_stack[SCS_SIZE / sizeof(long)]
55
+		__init_task_data = {
56
+	[(SCS_SIZE / sizeof(long)) - 1] = SCS_END_MAGIC
57
+};
5858 #endif
5959 
6060 /*
....@@ -65,14 +65,15 @@
6565 #ifdef CONFIG_ARCH_TASK_STRUCT_ON_STACK
6666 	__init_task_data
6767 #endif
68
+	__aligned(L1_CACHE_BYTES)
6869 = {
6970 #ifdef CONFIG_THREAD_INFO_IN_TASK
7071 	.thread_info	= INIT_THREAD_INFO(init_task),
71
-	.stack_refcount	= ATOMIC_INIT(1),
72
+	.stack_refcount	= REFCOUNT_INIT(1),
7273 #endif
7374 	.state		= 0,
7475 	.stack		= init_stack,
75
-	.usage		= ATOMIC_INIT(2),
76
+	.usage		= REFCOUNT_INIT(2),
7677 	.flags		= PF_KTHREAD,
7778 	.prio		= MAX_PRIO - 20,
7879 	.static_prio	= MAX_PRIO - 20,
....@@ -81,11 +82,6 @@
8182 	.cpus_ptr	= &init_task.cpus_mask,
8283 	.cpus_mask	= CPU_MASK_ALL,
8384 	.nr_cpus_allowed= NR_CPUS,
84
-	.cpus_requested	= CPU_MASK_ALL,
85
-#if defined(CONFIG_SMP) && defined(CONFIG_PREEMPT_RT_BASE) && \
86
-    defined(CONFIG_SCHED_DEBUG)
87
-	.pinned_on_cpu	= -1,
88
-#endif
8985 	.mm		= NULL,
9086 	.active_mm	= &init_mm,
9187 	.restart_block	= {
....@@ -118,6 +114,9 @@
118114 	.thread		= INIT_THREAD,
119115 	.fs		= &init_fs,
120116 	.files		= &init_files,
117
+#ifdef CONFIG_IO_URING
118
+	.io_uring	= NULL,
119
+#endif
121120 	.signal		= &init_signals,
122121 	.sighand	= &init_sighand,
123122 	.nsproxy	= &init_nsproxy,
....@@ -131,11 +130,10 @@
131130 	INIT_CPU_TIMERS(init_task)
132131 	.pi_lock	= __RAW_SPIN_LOCK_UNLOCKED(init_task.pi_lock),
133132 	.timer_slack_ns = 50000, /* 50 usec default slack */
134
-	INIT_TIMER_LIST
135133 	.thread_pid	= &init_struct_pid,
136134 	.thread_group	= LIST_HEAD_INIT(init_task.thread_group),
137135 	.thread_node	= LIST_HEAD_INIT(init_signals.thread_head),
138
-#ifdef CONFIG_AUDITSYSCALL
136
+#ifdef CONFIG_AUDIT
139137 	.loginuid	= INVALID_UID,
140138 	.sessionid	= AUDIT_SID_UNSET,
141139 #endif
....@@ -154,8 +152,14 @@
154152 	.rcu_tasks_holdout_list = LIST_HEAD_INIT(init_task.rcu_tasks_holdout_list),
155153 	.rcu_tasks_idle_cpu = -1,
156154 #endif
155
+#ifdef CONFIG_TASKS_TRACE_RCU
156
+	.trc_reader_nesting = 0,
157
+	.trc_reader_special.s = 0,
158
+	.trc_holdout_list = LIST_HEAD_INIT(init_task.trc_holdout_list),
159
+#endif
157160 #ifdef CONFIG_CPUSETS
158
-	.mems_allowed_seq = SEQCNT_ZERO(init_task.mems_allowed_seq),
161
+	.mems_allowed_seq = SEQCNT_SPINLOCK_ZERO(init_task.mems_allowed_seq,
162
+						 &init_task.alloc_lock),
159163 #endif
160164 #ifdef CONFIG_RT_MUTEXES
161165 	.pi_waiters	= RB_ROOT_CACHED,
....@@ -168,24 +172,36 @@
168172 	.vtime.state	= VTIME_SYS,
169173 #endif
170174 #ifdef CONFIG_NUMA_BALANCING
171
-	.numa_preferred_nid = -1,
175
+	.numa_preferred_nid = NUMA_NO_NODE,
172176 	.numa_group	= NULL,
173177 	.numa_faults	= NULL,
174178 #endif
175
-#ifdef CONFIG_KASAN
179
+#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
176180 	.kasan_depth	= 1,
181
+#endif
182
+#ifdef CONFIG_KCSAN
183
+	.kcsan_ctx = {
184
+		.disable_count		= 0,
185
+		.atomic_next		= 0,
186
+		.atomic_nest_count	= 0,
187
+		.in_flat_atomic		= false,
188
+		.access_mask		= 0,
189
+		.scoped_accesses	= {LIST_POISON1, NULL},
190
+	},
177191 #endif
178192 #ifdef CONFIG_TRACE_IRQFLAGS
179193 	.softirqs_enabled = 1,
180194 #endif
181195 #ifdef CONFIG_LOCKDEP
196
+	.lockdep_depth = 0, /* no locks held yet */
197
+	.curr_chain_key = INITIAL_CHAIN_KEY,
182198 	.lockdep_recursion = 0,
183199 #endif
184200 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
185201 	.ret_stack		= NULL,
186202 	.tracing_graph_pause	= ATOMIC_INIT(0),
187203 #endif
188
-#if defined(CONFIG_TRACING) && defined(CONFIG_PREEMPT)
204
+#if defined(CONFIG_TRACING) && defined(CONFIG_PREEMPTION)
189205 	.trace_recursion = 0,
190206 #endif
191207 #ifdef CONFIG_LIVEPATCH
....@@ -194,15 +210,15 @@
194210 #ifdef CONFIG_SECURITY
195211 	.security	= NULL,
196212 #endif
213
+#ifdef CONFIG_SECCOMP_FILTER
214
+	.seccomp	= { .filter_count = ATOMIC_INIT(0) },
215
+#endif
216
+#ifdef CONFIG_ANDROID_VENDOR_OEM_DATA
217
+	.android_vendor_data1 = {0, },
218
+	.android_oem_data1 = {0, },
219
+#endif
197220 };
198221 EXPORT_SYMBOL(init_task);
199
-
200
-#ifdef CONFIG_SHADOW_CALL_STACK
201
-unsigned long init_shadow_call_stack[SCS_SIZE / sizeof(long)] __init_task_data
202
-		__aligned(SCS_SIZE) = {
203
-	[(SCS_SIZE / sizeof(long)) - 1] = SCS_END_MAGIC
204
-};
205
-#endif
206222 
207223 /*
208224  * Initial thread structure. Alignment of this is handled by a special