Merge tag 'sysctl-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl

Pull sysctl updates from Joel Granados:

 - Remove sentinel elements from ctl_table structs in kernel/*

   Removing sentinels in ctl_table arrays reduces the build time size
   and runtime memory consumed by ~64 bytes per array. Removals for
   net/, io_uring/, mm/, ipc/ and security/ are set to go into mainline
   through their respective subsystems making the next release the most
   likely place where the final series that removes the check for
   proc_name == NULL will land.

   This adds to removals already in arch/, drivers/ and fs/.

 - Adjust ctl_table definitions and references to allow constification
     - Remove unused ctl_table function arguments
     - Move non-const elements from ctl_table to ctl_table_header
     - Make ctl_table pointers const in ctl_table_root structure

   Making the static ctl_table structs const will increase safety by
   keeping the pointers to proc_handler functions in .rodata. Though no
   ctl_tables where made const in this PR, the ground work for making
   that possible has started with these changes sent by Thomas
   Weißschuh.

* tag 'sysctl-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl:
  sysctl: drop now unnecessary out-of-bounds check
  sysctl: move sysctl type to ctl_table_header
  sysctl: drop sysctl_is_perm_empty_ctl_table
  sysctl: treewide: constify argument ctl_table_root::permissions(table)
  sysctl: treewide: drop unused argument ctl_table_root::set_ownership(table)
  bpf: Remove the now superfluous sentinel elements from ctl_table array
  delayacct: Remove the now superfluous sentinel elements from ctl_table array
  kprobes: Remove the now superfluous sentinel elements from ctl_table array
  printk: Remove the now superfluous sentinel elements from ctl_table array
  scheduler: Remove the now superfluous sentinel elements from ctl_table array
  seccomp: Remove the now superfluous sentinel elements from ctl_table array
  timekeeping: Remove the now superfluous sentinel elements from ctl_table array
  ftrace: Remove the now superfluous sentinel elements from ctl_table array
  umh: Remove the now superfluous sentinel elements from ctl_table array
  kernel misc: Remove the now superfluous sentinel elements from ctl_table array

35 files changed, 28 insertions, 67 deletions

diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 37cde0efee57..b1c2c0b82116 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -30,9 +30,7 @@ static const struct file_operations proc_sys_dir_file_operations;
 static const struct inode_operations proc_sys_dir_operations;
 
 /* Support for permanently empty directories */
-static struct ctl_table sysctl_mount_point[] = {
-	{.type = SYSCTL_TABLE_TYPE_PERMANENTLY_EMPTY }
-};
+static struct ctl_table sysctl_mount_point[] = { };
 
 /**
  * register_sysctl_mount_point() - registers a sysctl mount point
@@ -48,14 +46,12 @@ struct ctl_table_header *register_sysctl_mount_point(const char *path)
 }
 EXPORT_SYMBOL(register_sysctl_mount_point);
 
-#define sysctl_is_perm_empty_ctl_table(tptr)		\
-	(tptr[0].type == SYSCTL_TABLE_TYPE_PERMANENTLY_EMPTY)
 #define sysctl_is_perm_empty_ctl_header(hptr)		\
-	(sysctl_is_perm_empty_ctl_table(hptr->ctl_table))
+	(hptr->type == SYSCTL_TABLE_TYPE_PERMANENTLY_EMPTY)
 #define sysctl_set_perm_empty_ctl_header(hptr)		\
-	(hptr->ctl_table[0].type = SYSCTL_TABLE_TYPE_PERMANENTLY_EMPTY)
+	(hptr->type = SYSCTL_TABLE_TYPE_PERMANENTLY_EMPTY)
 #define sysctl_clear_perm_empty_ctl_header(hptr)	\
-	(hptr->ctl_table[0].type = SYSCTL_TABLE_TYPE_DEFAULT)
+	(hptr->type = SYSCTL_TABLE_TYPE_DEFAULT)
 
 void proc_sys_poll_notify(struct ctl_table_poll *poll)
 {
@@ -210,6 +206,8 @@ static void init_header(struct ctl_table_header *head,
 			node++;
 		}
 	}
+	if (table == sysctl_mount_point)
+		sysctl_set_perm_empty_ctl_header(head);
 }
 
 static void erase_header(struct ctl_table_header *head)
@@ -232,8 +230,7 @@ static int insert_header(struct ctl_dir *dir, struct ctl_table_header *header)
 		return -EROFS;
 
 	/* Am I creating a permanently empty directory? */
-	if (header->ctl_table_size > 0 &&
-	    sysctl_is_perm_empty_ctl_table(header->ctl_table)) {
+	if (sysctl_is_perm_empty_ctl_header(header)) {
 		if (!RB_EMPTY_ROOT(&dir->root))
 			return -EINVAL;
 		sysctl_set_perm_empty_ctl_header(dir_h);
@@ -480,7 +477,7 @@ static struct inode *proc_sys_make_inode(struct super_block *sb,
 	}
 
 	if (root->set_ownership)
-		root->set_ownership(head, table, &inode->i_uid, &inode->i_gid);
+		root->set_ownership(head, &inode->i_uid, &inode->i_gid);
 	else {
 		inode->i_uid = GLOBAL_ROOT_UID;
 		inode->i_gid = GLOBAL_ROOT_GID;
@@ -1204,7 +1201,7 @@ static bool get_links(struct ctl_dir *dir,
 	struct ctl_table *entry, *link;
 
 	if (header->ctl_table_size == 0 ||
-	    sysctl_is_perm_empty_ctl_table(header->ctl_table))
+	    sysctl_is_perm_empty_ctl_header(header))
 		return true;
 
 	/* Are there links available for every entry in table? */
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 9413241df962..09db2f2e6488 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -137,17 +137,6 @@ struct ctl_table {
 	void *data;
 	int maxlen;
 	umode_t mode;
-	/**
-	 * enum type - Enumeration to differentiate between ctl target types
-	 * @SYSCTL_TABLE_TYPE_DEFAULT: ctl target with no special considerations
-	 * @SYSCTL_TABLE_TYPE_PERMANENTLY_EMPTY: Used to identify a permanently
-	 *                                       empty directory target to serve
-	 *                                       as mount point.
-	 */
-	enum {
-		SYSCTL_TABLE_TYPE_DEFAULT,
-		SYSCTL_TABLE_TYPE_PERMANENTLY_EMPTY
-	} type;
 	proc_handler *proc_handler;	/* Callback for text formatting */
 	struct ctl_table_poll *poll;
 	void *extra1;
@@ -188,6 +177,17 @@ struct ctl_table_header {
 	struct ctl_dir *parent;
 	struct ctl_node *node;
 	struct hlist_head inodes; /* head for proc_inode->sysctl_inodes */
+	/**
+	 * enum type - Enumeration to differentiate between ctl target types
+	 * @SYSCTL_TABLE_TYPE_DEFAULT: ctl target with no special considerations
+	 * @SYSCTL_TABLE_TYPE_PERMANENTLY_EMPTY: Used to identify a permanently
+	 *                                       empty directory target to serve
+	 *                                       as mount point.
+	 */
+	enum {
+		SYSCTL_TABLE_TYPE_DEFAULT,
+		SYSCTL_TABLE_TYPE_PERMANENTLY_EMPTY,
+	} type;
 };
 
 struct ctl_dir {
@@ -205,9 +205,8 @@ struct ctl_table_root {
 	struct ctl_table_set default_set;
 	struct ctl_table_set *(*lookup)(struct ctl_table_root *root);
 	void (*set_ownership)(struct ctl_table_header *head,
-			      struct ctl_table *table,
 			      kuid_t *uid, kgid_t *gid);
-	int (*permissions)(struct ctl_table_header *head, struct ctl_table *table);
+	int (*permissions)(struct ctl_table_header *head, const struct ctl_table *table);
 };
 
 #define register_sysctl(path, table)	\
diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c
index 3c3755918d34..113452038303 100644
--- a/ipc/ipc_sysctl.c
+++ b/ipc/ipc_sysctl.c
@@ -192,7 +192,6 @@ static int set_is_seen(struct ctl_table_set *set)
 }
 
 static void ipc_set_ownership(struct ctl_table_header *head,
-			      struct ctl_table *table,
 			      kuid_t *uid, kgid_t *gid)
 {
 	struct ipc_namespace *ns =
@@ -205,7 +204,7 @@ static void ipc_set_ownership(struct ctl_table_header *head,
 	*gid = gid_valid(ns_root_gid) ? ns_root_gid : GLOBAL_ROOT_GID;
 }
 
-static int ipc_permissions(struct ctl_table_header *head, struct ctl_table *table)
+static int ipc_permissions(struct ctl_table_header *head, const struct ctl_table *table)
 {
 	int mode = table->mode;
 
@@ -224,7 +223,7 @@ static int ipc_permissions(struct ctl_table_header *head, struct ctl_table *tabl
 		kuid_t ns_root_uid;
 		kgid_t ns_root_gid;
 
-		ipc_set_ownership(head, table, &ns_root_uid, &ns_root_gid);
+		ipc_set_ownership(head, &ns_root_uid, &ns_root_gid);
 
 		if (uid_eq(current_euid(), ns_root_uid))
 			mode >>= 6;
diff --git a/ipc/mq_sysctl.c b/ipc/mq_sysctl.c
index 69c709262f5a..068e7d5aa42b 100644
--- a/ipc/mq_sysctl.c
+++ b/ipc/mq_sysctl.c
@@ -78,7 +78,6 @@ static int set_is_seen(struct ctl_table_set *set)
 }
 
 static void mq_set_ownership(struct ctl_table_header *head,
-			     struct ctl_table *table,
 			     kuid_t *uid, kgid_t *gid)
 {
 	struct ipc_namespace *ns =
@@ -91,13 +90,13 @@ static void mq_set_ownership(struct ctl_table_header *head,
 	*gid = gid_valid(ns_root_gid) ? ns_root_gid : GLOBAL_ROOT_GID;
 }
 
-static int mq_permissions(struct ctl_table_header *head, struct ctl_table *table)
+static int mq_permissions(struct ctl_table_header *head, const struct ctl_table *table)
 {
 	int mode = table->mode;
 	kuid_t ns_root_uid;
 	kgid_t ns_root_gid;
 
-	mq_set_ownership(head, table, &ns_root_uid, &ns_root_gid);
+	mq_set_ownership(head, &ns_root_uid, &ns_root_gid);
 
 	if (uid_eq(current_euid(), ns_root_uid))
 		mode >>= 6;
diff --git a/kernel/acct.c b/kernel/acct.c
index 986c8214dabf..179848ad33e9 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -84,7 +84,6 @@ static struct ctl_table kern_acct_table[] = {
 		.mode           = 0644,
 		.proc_handler   = proc_dointvec,
 	},
-	{ }
 };
 
 static __init int kernel_acct_sysctls_init(void)
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index cf6285760aea..2b7d3c96c7ea 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -6035,7 +6035,6 @@ static struct ctl_table bpf_syscall_table[] = {
 		.mode		= 0644,
 		.proc_handler	= bpf_stats_handler,
 	},
-	{ }
 };
 
 static int __init bpf_syscall_sysctl_init(void)
diff --git a/kernel/delayacct.c b/kernel/delayacct.c
index 6f0c358e73d8..e039b0f99a0b 100644
--- a/kernel/delayacct.c
+++ b/kernel/delayacct.c
@@ -74,7 +74,6 @@ static struct ctl_table kern_delayacct_table[] = {
 		.extra1         = SYSCTL_ZERO,
 		.extra2         = SYSCTL_ONE,
 	},
-	{ }
 };
 
 static __init int kernel_delayacct_sysctls_init(void)
diff --git a/kernel/exit.c b/kernel/exit.c
index 41a12630cbbc..cd3aa9042f1a 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -94,7 +94,6 @@ static struct ctl_table kern_exit_table[] = {
 		.mode           = 0644,
 		.proc_handler   = proc_douintvec,
 	},
-	{ }
 };
 
 static __init int kernel_exit_sysctls_init(void)
diff --git a/kernel/hung_task.c b/kernel/hung_task.c
index b2fc2727d654..1d92016b0b3c 100644
--- a/kernel/hung_task.c
+++ b/kernel/hung_task.c
@@ -314,7 +314,6 @@ static struct ctl_table hung_task_sysctls[] = {
 		.proc_handler	= proc_dointvec_minmax,
 		.extra1		= SYSCTL_NEG_ONE,
 	},
-	{}
 };
 
 static void __init hung_task_sysctl_init(void)
diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
index 0e96f6b24344..9112d69d68b0 100644
--- a/kernel/kexec_core.c
+++ b/kernel/kexec_core.c
@@ -948,7 +948,6 @@ static struct ctl_table kexec_core_sysctls[] = {
 		.mode		= 0644,
 		.proc_handler	= kexec_limit_handler,
 	},
-	{ }
 };
 
 static int __init kexec_core_sysctl_init(void)
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index ca2c6cbd42d2..48b49925f7ff 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -968,7 +968,6 @@ static struct ctl_table kprobe_sysctls[] = {
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= SYSCTL_ONE,
 	},
-	{}
 };
 
 static void __init kprobe_sysctls_init(void)
diff --git a/kernel/latencytop.c b/kernel/latencytop.c
index 781249098cb6..84c53285f499 100644
--- a/kernel/latencytop.c
+++ b/kernel/latencytop.c
@@ -85,7 +85,6 @@ static struct ctl_table latencytop_sysctl[] = {
 		.mode       = 0644,
 		.proc_handler   = sysctl_latencytop,
 	},
-	{}
 };
 #endif
 
diff --git a/kernel/panic.c b/kernel/panic.c
index 747c3f3d289a..8bff183d6180 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -100,7 +100,6 @@ static struct ctl_table kern_panic_table[] = {
 		.mode           = 0644,
 		.proc_handler   = proc_douintvec,
 	},
-	{ }
 };
 
 static __init int kernel_panic_sysctls_init(void)
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c
index 7ade20e95232..dc48fecfa1dc 100644
--- a/kernel/pid_namespace.c
+++ b/kernel/pid_namespace.c
@@ -307,7 +307,6 @@ static struct ctl_table pid_ns_ctl_table[] = {
 		.extra1 = SYSCTL_ZERO,
 		.extra2 = &pid_max,
 	},
-	{ }
 };
 #endif	/* CONFIG_CHECKPOINT_RESTORE */
 
diff --git a/kernel/pid_sysctl.h b/kernel/pid_sysctl.h
index 2ee41a3a1dfd..fe9fb991dc42 100644
--- a/kernel/pid_sysctl.h
+++ b/kernel/pid_sysctl.h
@@ -41,7 +41,6 @@ static struct ctl_table pid_ns_ctl_table_vm[] = {
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= SYSCTL_TWO,
 	},
-	{ }
 };
 static inline void register_pid_ns_sysctl_table_vm(void)
 {
diff --git a/kernel/printk/sysctl.c b/kernel/printk/sysctl.c
index c228343eeb97..3e47dedce9e5 100644
--- a/kernel/printk/sysctl.c
+++ b/kernel/printk/sysctl.c
@@ -76,7 +76,6 @@ static struct ctl_table printk_sysctls[] = {
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= SYSCTL_TWO,
 	},
-	{}
 };
 
 void __init printk_sysctl_init(void)
diff --git a/kernel/reboot.c b/kernel/reboot.c
index 22c16e2564cc..f05dbde2c93f 100644
--- a/kernel/reboot.c
+++ b/kernel/reboot.c
@@ -1295,7 +1295,6 @@ static struct ctl_table kern_reboot_table[] = {
 		.mode           = 0644,
 		.proc_handler   = proc_dointvec,
 	},
-	{ }
 };
 
 static void __init kernel_reboot_sysctls_init(void)
diff --git a/kernel/sched/autogroup.c b/kernel/sched/autogroup.c
index 991fc9002535..db68a964e34e 100644
--- a/kernel/sched/autogroup.c
+++ b/kernel/sched/autogroup.c
@@ -19,7 +19,6 @@ static struct ctl_table sched_autogroup_sysctls[] = {
 		.extra1         = SYSCTL_ZERO,
 		.extra2         = SYSCTL_ONE,
 	},
-	{}
 };
 
 static void __init sched_autogroup_sysctl_init(void)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 1a914388144a..373eaeaf63b8 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4741,7 +4741,6 @@ static struct ctl_table sched_core_sysctls[] = {
 		.extra2		= SYSCTL_FOUR,
 	},
 #endif /* CONFIG_NUMA_BALANCING */
-	{}
 };
 static int __init sched_core_sysctl_init(void)
 {
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index a04a436af8cc..c75d1307d86d 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -43,7 +43,6 @@ static struct ctl_table sched_dl_sysctls[] = {
 		.proc_handler   = proc_douintvec_minmax,
 		.extra2         = (void *)&sysctl_sched_dl_period_max,
 	},
-	{}
 };
 
 static int __init sched_dl_sysctl_init(void)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 146ecf9cc3af..4214df32ba45 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -151,7 +151,6 @@ static struct ctl_table sched_fair_sysctls[] = {
 		.extra1		= SYSCTL_ZERO,
 	},
 #endif /* CONFIG_NUMA_BALANCING */
-	{}
 };
 
 static int __init sched_fair_sysctl_init(void)
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index 3261b067b67e..aa4c1c874fa4 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -56,7 +56,6 @@ static struct ctl_table sched_rt_sysctls[] = {
 		.mode           = 0644,
 		.proc_handler   = sched_rr_handler,
 	},
-	{}
 };
 
 static int __init sched_rt_sysctl_init(void)
diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
index 63aecd2a7a9f..683559831656 100644
--- a/kernel/sched/topology.c
+++ b/kernel/sched/topology.c
@@ -322,7 +322,6 @@ static struct ctl_table sched_energy_aware_sysctls[] = {
 		.extra1         = SYSCTL_ZERO,
 		.extra2         = SYSCTL_ONE,
 	},
-	{}
 };
 
 static int __init sched_energy_aware_sysctl_init(void)
diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index f70e031e06a8..e30b60b57614 100644
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -2445,7 +2445,6 @@ static struct ctl_table seccomp_sysctl_table[] = {
 		.mode		= 0644,
 		.proc_handler	= seccomp_actions_logged_handler,
 	},
-	{ }
 };
 
 static int __init seccomp_sysctl_init(void)
diff --git a/kernel/signal.c b/kernel/signal.c
index 7bdbcf1b78d0..01c4c46a51a8 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -4840,7 +4840,6 @@ static struct ctl_table signal_debug_table[] = {
 		.proc_handler	= proc_dointvec
 	},
 #endif
-	{ }
 };
 
 static int __init init_signal_sysctls(void)
diff --git a/kernel/stackleak.c b/kernel/stackleak.c
index 59cdfaf5118e..0f9712584913 100644
--- a/kernel/stackleak.c
+++ b/kernel/stackleak.c
@@ -54,7 +54,6 @@ static struct ctl_table stackleak_sysctls[] = {
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= SYSCTL_ONE,
 	},
-	{}
 };
 
 static int __init stackleak_sysctls_init(void)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 81cc974913bb..e0b917328cf9 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2034,7 +2034,6 @@ static struct ctl_table kern_table[] = {
 		.extra2		= SYSCTL_INT_MAX,
 	},
 #endif
-	{ }
 };
 
 static struct ctl_table vm_table[] = {
@@ -2240,7 +2239,6 @@ static struct ctl_table vm_table[] = {
 		.extra2		= (void *)&mmap_rnd_compat_bits_max,
 	},
 #endif
-	{ }
 };
 
 int __init sysctl_init_bases(void)
diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index e394d6d5b9b5..48288dd4a102 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -312,7 +312,6 @@ static struct ctl_table timer_sysctl[] = {
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= SYSCTL_ONE,
 	},
-	{}
 };
 
 static int __init timer_sysctl_init(void)
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 6c96b30f3d63..50ca4d4f8840 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -8269,7 +8269,6 @@ static struct ctl_table ftrace_sysctls[] = {
 		.mode           = 0644,
 		.proc_handler   = ftrace_enable_sysctl,
 	},
-	{}
 };
 
 static int __init ftrace_sysctl_init(void)
diff --git a/kernel/trace/trace_events_user.c b/kernel/trace/trace_events_user.c
index 70d428c394b6..304ceed9fd7d 100644
--- a/kernel/trace/trace_events_user.c
+++ b/kernel/trace/trace_events_user.c
@@ -2833,7 +2833,6 @@ static struct ctl_table user_event_sysctls[] = {
 		.mode		= 0644,
 		.proc_handler	= set_max_user_events_sysctl,
 	},
-	{}
 };
 
 static int __init trace_events_user_init(void)
diff --git a/kernel/ucount.c b/kernel/ucount.c
index d9e283600f5c..8c07714ff27d 100644
--- a/kernel/ucount.c
+++ b/kernel/ucount.c
@@ -38,7 +38,7 @@ static int set_is_seen(struct ctl_table_set *set)
 }
 
 static int set_permissions(struct ctl_table_header *head,
-				  struct ctl_table *table)
+			   const struct ctl_table *table)
 {
 	struct user_namespace *user_ns =
 		container_of(head->set, struct user_namespace, set);
@@ -87,7 +87,6 @@ static struct ctl_table user_table[] = {
 	UCOUNT_ENTRY("max_fanotify_groups"),
 	UCOUNT_ENTRY("max_fanotify_marks"),
 #endif
-	{ }
 };
 #endif /* CONFIG_SYSCTL */
 
@@ -96,7 +95,7 @@ bool setup_userns_sysctls(struct user_namespace *ns)
 #ifdef CONFIG_SYSCTL
 	struct ctl_table *tbl;
 
-	BUILD_BUG_ON(ARRAY_SIZE(user_table) != UCOUNT_COUNTS + 1);
+	BUILD_BUG_ON(ARRAY_SIZE(user_table) != UCOUNT_COUNTS);
 	setup_sysctl_set(&ns->set, &set_root, set_is_seen);
 	tbl = kmemdup(user_table, sizeof(user_table), GFP_KERNEL);
 	if (tbl) {
diff --git a/kernel/umh.c b/kernel/umh.c
index 1b13c5d34624..598b3ffe1522 100644
--- a/kernel/umh.c
+++ b/kernel/umh.c
@@ -560,7 +560,6 @@ static struct ctl_table usermodehelper_table[] = {
 		.mode		= 0600,
 		.proc_handler	= proc_cap_handler,
 	},
-	{ }
 };
 
 static int __init init_umh_sysctls(void)
diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c
index 019e3a1566cf..76a772072557 100644
--- a/kernel/utsname_sysctl.c
+++ b/kernel/utsname_sysctl.c
@@ -120,7 +120,6 @@ static struct ctl_table uts_kern_table[] = {
 		.proc_handler	= proc_do_uts_string,
 		.poll		= &domainname_poll,
 	},
-	{}
 };
 
 #ifdef CONFIG_PROC_SYSCTL
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index d12ff74889ed..941236828de8 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -1155,7 +1155,6 @@ static struct ctl_table watchdog_sysctls[] = {
 	},
 #endif /* CONFIG_SMP */
 #endif
-	{}
 };
 
 static struct ctl_table watchdog_hardlockup_sysctl[] = {
@@ -1168,7 +1167,6 @@ static struct ctl_table watchdog_hardlockup_sysctl[] = {
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= SYSCTL_ONE,
 	},
-	{}
 };
 
 static void __init watchdog_sysctl_init(void)
diff --git a/net/sysctl_net.c b/net/sysctl_net.c
index 051ed5f6fc93..f5017012a049 100644
--- a/net/sysctl_net.c
+++ b/net/sysctl_net.c
@@ -40,7 +40,7 @@ static int is_seen(struct ctl_table_set *set)
 
 /* Return standard mode bits for table entry. */
 static int net_ctl_permissions(struct ctl_table_header *head,
-			       struct ctl_table *table)
+			       const struct ctl_table *table)
 {
 	struct net *net = container_of(head->set, struct net, sysctls);
 
@@ -54,7 +54,6 @@ static int net_ctl_permissions(struct ctl_table_header *head,
 }
 
 static void net_ctl_set_ownership(struct ctl_table_header *head,
-				  struct ctl_table *table,
 				  kuid_t *uid, kgid_t *gid)
 {
 	struct net *net = container_of(head->set, struct net, sysctls);