kabi: reserve space for schedule subsystem related structure

hulk inclusion
category: feature
bugzilla: 13276
CVE: NA

-------------------------------

Reserve space for the structure in schedule subsystem.
Signed-off-by: NTan Xiaojun <tanxiaojun@huawei.com>
Reviewed-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

include/linux/sched.h

@@ -478,6 +478,11 @@ struct sched_entity {
 	 */
 	struct sched_avg		avg;
 #endif
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 };
 
 struct sched_rt_entity {
@@ -1199,6 +1204,15 @@ struct task_struct {
 	 */
 	randomized_struct_fields_end
 
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
+	KABI_RESERVE(5)
+	KABI_RESERVE(6)
+	KABI_RESERVE(7)
+	KABI_RESERVE(8)
+
 	/* CPU-specific state of this task: */
 	struct thread_struct		thread;
 

include/linux/sched/signal.h

@@ -2,6 +2,7 @@
 #ifndef _LINUX_SCHED_SIGNAL_H
 #define _LINUX_SCHED_SIGNAL_H
 
+#include <linux/kabi.h>
 #include <linux/rculist.h>
 #include <linux/signal.h>
 #include <linux/sched.h>
@@ -232,6 +233,11 @@ struct signal_struct {
 	struct mutex cred_guard_mutex;	/* guard against foreign influences on
 					 * credential calculations
 					 * (notably. ptrace) */
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 } __randomize_layout;
 
 /*

include/linux/sched/user.h

@@ -2,6 +2,7 @@
 #ifndef _LINUX_SCHED_USER_H
 #define _LINUX_SCHED_USER_H
 
+#include <linux/kabi.h>
 #include <linux/uidgid.h>
 #include <linux/atomic.h>
 #include <linux/refcount.h>
@@ -46,6 +47,9 @@ struct user_struct {
 
 	/* Miscellaneous per-user rate limit */
 	struct ratelimit_state ratelimit;
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
 };
 
 extern int uids_sysfs_init(void);

kernel/sched/sched.h

@@ -64,6 +64,7 @@
 #include <linux/syscalls.h>
 #include <linux/task_work.h>
 #include <linux/tsacct_kern.h>
+#include <linux/kabi.h>
 
 #include <asm/tlb.h>
 
@@ -392,6 +393,9 @@ struct task_group {
 #endif
 
 	struct cfs_bandwidth	cfs_bandwidth;
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
 };
 
 #ifdef CONFIG_FAIR_GROUP_SCHED
@@ -567,6 +571,9 @@ struct cfs_rq {
 	struct list_head	throttled_list;
 #endif /* CONFIG_CFS_BANDWIDTH */
 #endif /* CONFIG_FAIR_GROUP_SCHED */
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
 };
 
 static inline int rt_bandwidth_enabled(void)
@@ -751,6 +758,11 @@ struct root_domain {
 	struct cpupri		cpupri;
 
 	unsigned long		max_cpu_capacity;
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 };
 
 extern struct root_domain def_root_domain;
@@ -917,6 +929,9 @@ struct rq {
 	/* Must be inspected within a rcu lock section */
 	struct cpuidle_state	*idle_state;
 #endif
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
 };
 
 struct cputime {
@@ -1227,6 +1242,9 @@ struct sched_group {
 	struct sched_group_capacity *sgc;
 	int			asym_prefer_cpu;	/* CPU of highest priority in group */
 
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+
 	/*
 	 * The CPUs this group covers.
 	 *
@@ -1575,6 +1593,9 @@ struct sched_class {
 #ifdef CONFIG_FAIR_GROUP_SCHED
 	void (*task_change_group)(struct task_struct *p, int type);
 #endif
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
 };
 
 static inline void put_prev_task(struct rq *rq, struct task_struct *prev)