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

30 files changed, 2 insertions, 34 deletions

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)