[PATCH v2] treewide: const qualify ctl_tables where applicable

Joel Granados
2025-01-10T14:16:56Z

Add the const qualifier to all the ctl_tables in the tree except for
watchdog_hardlockup_sysctl, memory_allocation_profiling_sysctls,
loadpin_sysctl_table and the ones calling register_net_sysctl (./net,
drivers/inifiniband dirs). These are special cases as they use a
registration function with a non-const qualified ctl_table argument or
modify the arrays before passing them on to the registration function.

Constifying ctl_table structs will prevent the modification of
proc_handler function pointers as the arrays would reside in .rodata.
This is made possible after commit 78eb4ea25cd5 ("sysctl: treewide:
constify the ctl_table argument of proc_handlers") constified all the
proc_handlers.

Created this by running an spatch followed by a sed command:
Spatch:
virtual patch

@
depends on !(file in "net")
disable optional_qualifier
@
identifier table_name != {watchdog_hardlockup_sysctl,iwcm_ctl_table,ucma_ctl_table,memory_allocation_profiling_sysctls,loadpin_sysctl_table};
@@

+ const
struct ctl_table table_name [] = { ... };

sed:
sed --in-place \
-e "s/struct ctl_table .table = &uts_kern/const struct ctl_table *table = \&uts_kern/" \
kernel/utsname_sysctl.c

Reviewed-by: Song Liu <song@kernel.org>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org> # for kernel/trace/
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> # SCSI
Reviewed-by: Darrick J. Wong <djwong@kernel.org> # xfs
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Joel Granados <joel.granados@kernel.org>
---
This treewide commit builds upon the work Thomas began a few releases
ago [1], where he laid the groundwork for constifying ctl_tables. We
implement constification throughout the tree, with the exception of the
ctl_tables in the "net" directory. Those are special in that they treat
the ctl_table as non-const but we can take them at a later point.

Upstreaming:
===========
It is late in the release cycle, but I'm hopeful that we can get this
in for the upcoming merge window and this is why:
1. We don't use linux-next: As with previous treewide changes similar to
this one [1], we avoid using linux-next in order to avoid unwanted
merge conflicts
2. This is a non-functional change: which lowers the probability of
unforeseen errors or regressions.
3. It will have at least 2 weeks to be tested/reviewed: The PULL should
be sent at the end of the merge window, giving it at least 2 weeks.
And if there are more release candidates after rc6, there will be
more time.

Testing:
========
1. Currently being tested in 0-day
2. sysctl self-tests/kunit-tests

Reduced To/Cc:
==============
b4 originally gave me 200 ppl that this should go out to (which seems a
bit overkill from my point of view). So I left the mailing lists and
reduced the To: the ppl previously involved in the effort and sysctl
maintainers. Please tell me if I missed someone important to the
constification effort.

Comments are greatly appreciated.

Changes in v2:
- watchdog_hardlockup_sysctl, memory_allocation_profiling_sysctls,
loadpin_sysctl_table, iwcm_ctl_table and ucma_ctl_table where removed
from patchset as they change the sysctl array before registration.
- Added reviewed-by tags
- Link to v1: https://lore.kernel.org/r/20250109-jag-ctl_table_const-v1-1-622aea7230cf@kernel.org
Best

[1] https://lore.kernel.org/20240724210014.mc6nima6cekgiukx@joelS2.panther.com

--
---

---
arch/arm/kernel/isa.c | 2 +-
arch/arm64/kernel/fpsimd.c | 4 ++--
arch/arm64/kernel/process.c | 2 +-
arch/powerpc/kernel/idle.c | 2 +-
arch/powerpc/platforms/pseries/mobility.c | 2 +-
arch/riscv/kernel/process.c | 2 +-
arch/riscv/kernel/vector.c | 2 +-
arch/s390/appldata/appldata_base.c | 2 +-
arch/s390/kernel/debug.c | 2 +-
arch/s390/kernel/hiperdispatch.c | 2 +-
arch/s390/kernel/topology.c | 2 +-
arch/s390/mm/cmm.c | 2 +-
arch/s390/mm/pgalloc.c | 2 +-
arch/x86/entry/vdso/vdso32-setup.c | 2 +-
arch/x86/kernel/cpu/bus_lock.c | 2 +-
arch/x86/kernel/itmt.c | 2 +-
crypto/fips.c | 2 +-
drivers/base/firmware_loader/fallback_table.c | 2 +-
drivers/cdrom/cdrom.c | 2 +-
drivers/char/hpet.c | 2 +-
drivers/char/ipmi/ipmi_poweroff.c | 2 +-
drivers/char/random.c | 2 +-
drivers/gpu/drm/i915/i915_perf.c | 2 +-
drivers/gpu/drm/xe/xe_observation.c | 2 +-
drivers/hv/hv_common.c | 2 +-
drivers/macintosh/mac_hid.c | 2 +-
drivers/md/md.c | 2 +-
drivers/misc/sgi-xp/xpc_main.c | 4 ++--
drivers/perf/arm_pmuv3.c | 2 +-
drivers/perf/riscv_pmu_sbi.c | 2 +-
drivers/scsi/scsi_sysctl.c | 2 +-
drivers/scsi/sg.c | 2 +-
drivers/tty/tty_io.c | 2 +-
drivers/xen/balloon.c | 2 +-
fs/aio.c | 2 +-
fs/cachefiles/error_inject.c | 2 +-
fs/coda/sysctl.c | 2 +-
fs/coredump.c | 2 +-
fs/dcache.c | 2 +-
fs/devpts/inode.c | 2 +-
fs/eventpoll.c | 2 +-
fs/exec.c | 2 +-
fs/file_table.c | 2 +-
fs/fuse/sysctl.c | 2 +-
fs/inode.c | 2 +-
fs/lockd/svc.c | 2 +-
fs/locks.c | 2 +-
fs/namei.c | 2 +-
fs/namespace.c | 2 +-
fs/nfs/nfs4sysctl.c | 2 +-
fs/nfs/sysctl.c | 2 +-
fs/notify/dnotify/dnotify.c | 2 +-
fs/notify/fanotify/fanotify_user.c | 2 +-
fs/notify/inotify/inotify_user.c | 2 +-
fs/ocfs2/stackglue.c | 2 +-
fs/pipe.c | 2 +-
fs/quota/dquot.c | 2 +-
fs/sysctls.c | 2 +-
fs/userfaultfd.c | 2 +-
fs/verity/init.c | 2 +-
fs/xfs/xfs_sysctl.c | 2 +-
init/do_mounts_initrd.c | 2 +-
io_uring/io_uring.c | 2 +-
ipc/ipc_sysctl.c | 2 +-
ipc/mq_sysctl.c | 2 +-
kernel/acct.c | 2 +-
kernel/bpf/syscall.c | 2 +-
kernel/delayacct.c | 2 +-
kernel/exit.c | 2 +-
kernel/hung_task.c | 2 +-
kernel/kexec_core.c | 2 +-
kernel/kprobes.c | 2 +-
kernel/latencytop.c | 2 +-
kernel/locking/lockdep.c | 2 +-
kernel/panic.c | 2 +-
kernel/pid_namespace.c | 2 +-
kernel/pid_sysctl.h | 2 +-
kernel/printk/sysctl.c | 2 +-
kernel/reboot.c | 2 +-
kernel/sched/autogroup.c | 2 +-
kernel/sched/core.c | 2 +-
kernel/sched/deadline.c | 2 +-
kernel/sched/fair.c | 2 +-
kernel/sched/rt.c | 2 +-
kernel/sched/topology.c | 2 +-
kernel/seccomp.c | 2 +-
kernel/signal.c | 2 +-
kernel/stackleak.c | 2 +-
kernel/sysctl-test.c | 6 +++---
kernel/sysctl.c | 4 ++--
kernel/time/timer.c | 2 +-
kernel/trace/ftrace.c | 2 +-
kernel/trace/trace_events_user.c | 2 +-
kernel/umh.c | 2 +-
kernel/utsname_sysctl.c | 4 ++--
kernel/watchdog.c | 2 +-
lib/test_sysctl.c | 6 +++---
mm/compaction.c | 2 +-
mm/hugetlb.c | 2 +-
mm/hugetlb_vmemmap.c | 2 +-
mm/memory-failure.c | 2 +-
mm/oom_kill.c | 2 +-
mm/page-writeback.c | 2 +-
mm/page_alloc.c | 2 +-
security/apparmor/lsm.c | 2 +-
security/keys/sysctl.c | 2 +-
security/yama/yama_lsm.c | 2 +-
107 files changed, 115 insertions(+), 115 deletions(-)

diff --git a/arch/arm/kernel/isa.c b/arch/arm/kernel/isa.c
index 905b1b191546..db8be609fab2 100644
--- a/arch/arm/kernel/isa.c
+++ b/arch/arm/kernel/isa.c
@@ -16,7 +16,7 @@

static unsigned int isa_membase, isa_portbase, isa_portshift;

-static struct ctl_table ctl_isa_vars[] = {
+static const struct ctl_table ctl_isa_vars[] = {
{
.procname = "membase",
.data = &isa_membase,
diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
index 8c4c1a2186cc..2b601d88762d 100644
--- a/arch/arm64/kernel/fpsimd.c
+++ b/arch/arm64/kernel/fpsimd.c
@@ -562,7 +562,7 @@ static int vec_proc_do_default_vl(const struct ctl_table *table, int write,
return 0;
}

-static struct ctl_table sve_default_vl_table[] = {
+static const struct ctl_table sve_default_vl_table[] = {
{
.procname = "sve_default_vector_length",
.mode = 0644,
@@ -585,7 +585,7 @@ static int __init sve_sysctl_init(void) { return 0; }
#endif /* ! (CONFIG_ARM64_SVE && CONFIG_SYSCTL) */

#if defined(CONFIG_ARM64_SME) && defined(CONFIG_SYSCTL)
-static struct ctl_table sme_default_vl_table[] = {
+static const struct ctl_table sme_default_vl_table[] = {
{
.procname = "sme_default_vector_length",
.mode = 0644,
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 2968a33bb3bc..42faebb7b712 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -859,7 +859,7 @@ long get_tagged_addr_ctrl(struct task_struct *task)
* disable it for tasks that already opted in to the relaxed ABI.
*/

-static struct ctl_table tagged_addr_sysctl_table[] = {
+static const struct ctl_table tagged_addr_sysctl_table[] = {
{
.procname = "tagged_addr_disabled",
.mode = 0644,
diff --git a/arch/powerpc/kernel/idle.c b/arch/powerpc/kernel/idle.c
index 30b56c67fa61..e527cd3ef128 100644
--- a/arch/powerpc/kernel/idle.c
+++ b/arch/powerpc/kernel/idle.c
@@ -97,7 +97,7 @@ void power4_idle(void)
/*
* Register the sysctl to set/clear powersave_nap.
*/
-static struct ctl_table powersave_nap_ctl_table[] = {
+static const struct ctl_table powersave_nap_ctl_table[] = {
{
.procname = "powersave-nap",
.data = &powersave_nap,
diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c
index 1798f0f14d58..62bd8e2d5d4c 100644
--- a/arch/powerpc/platforms/pseries/mobility.c
+++ b/arch/powerpc/platforms/pseries/mobility.c
@@ -53,7 +53,7 @@ struct update_props_workarea {
static unsigned int nmi_wd_lpm_factor = 200;

#ifdef CONFIG_SYSCTL
-static struct ctl_table nmi_wd_lpm_factor_ctl_table[] = {
+static const struct ctl_table nmi_wd_lpm_factor_ctl_table[] = {
{
.procname = "nmi_wd_lpm_factor",
.data = &nmi_wd_lpm_factor,
diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c
index 58b6482c2bf6..7891294abf49 100644
--- a/arch/riscv/kernel/process.c
+++ b/arch/riscv/kernel/process.c
@@ -364,7 +364,7 @@ static bool try_to_set_pmm(unsigned long value)
* disable it for tasks that already opted in to the relaxed ABI.
*/

-static struct ctl_table tagged_addr_sysctl_table[] = {
+static const struct ctl_table tagged_addr_sysctl_table[] = {
{
.procname = "tagged_addr_disabled",
.mode = 0644,
diff --git a/arch/riscv/kernel/vector.c b/arch/riscv/kernel/vector.c
index 821818886fab..d022b028ac3f 100644
--- a/arch/riscv/kernel/vector.c
+++ b/arch/riscv/kernel/vector.c
@@ -287,7 +287,7 @@ long riscv_v_vstate_ctrl_set_current(unsigned long arg)

#ifdef CONFIG_SYSCTL

-static struct ctl_table riscv_v_default_vstate_table[] = {
+static const struct ctl_table riscv_v_default_vstate_table[] = {
{
.procname = "riscv_v_default_allow",
.data = &riscv_v_implicit_uacc,
diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index 91a30e017d65..dd7ba7587dd5 100644
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -52,7 +52,7 @@ static int appldata_interval_handler(const struct ctl_table *ctl, int write,
void *buffer, size_t *lenp, loff_t *ppos);

static struct ctl_table_header *appldata_sysctl_header;
-static struct ctl_table appldata_table[] = {
+static const struct ctl_table appldata_table[] = {
{
.procname = "timer",
.mode = S_IRUGO | S_IWUSR,
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index de19fd8a6a95..2c245c2bce4f 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -972,7 +972,7 @@ static int s390dbf_procactive(const struct ctl_table *table, int write,
return 0;
}

-static struct ctl_table s390dbf_table[] = {
+static const struct ctl_table s390dbf_table[] = {
{
.procname = "debug_stoppable",
.data = &debug_stoppable,
diff --git a/arch/s390/kernel/hiperdispatch.c b/arch/s390/kernel/hiperdispatch.c
index 2a99a216ab62..7857a7e8e56c 100644
--- a/arch/s390/kernel/hiperdispatch.c
+++ b/arch/s390/kernel/hiperdispatch.c
@@ -292,7 +292,7 @@ static int hiperdispatch_ctl_handler(const struct ctl_table *ctl, int write,
return 0;
}

-static struct ctl_table hiperdispatch_ctl_table[] = {
+static const struct ctl_table hiperdispatch_ctl_table[] = {
{
.procname = "hiperdispatch",
.mode = 0644,
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 4f9c301a705b..5067293ef69d 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -662,7 +662,7 @@ static int polarization_ctl_handler(const struct ctl_table *ctl, int write,
return set_polarization(polarization);
}

-static struct ctl_table topology_ctl_table[] = {
+static const struct ctl_table topology_ctl_table[] = {
{
.procname = "topology",
.mode = 0644,
diff --git a/arch/s390/mm/cmm.c b/arch/s390/mm/cmm.c
index d01724a715d0..939e3bec2db7 100644
--- a/arch/s390/mm/cmm.c
+++ b/arch/s390/mm/cmm.c
@@ -332,7 +332,7 @@ static int cmm_timeout_handler(const struct ctl_table *ctl, int write,
return 0;
}

-static struct ctl_table cmm_table[] = {
+static const struct ctl_table cmm_table[] = {
{
.procname = "cmm_pages",
.mode = 0644,
diff --git a/arch/s390/mm/pgalloc.c b/arch/s390/mm/pgalloc.c
index 58696a0c4e4a..18d3176e44fb 100644
--- a/arch/s390/mm/pgalloc.c
+++ b/arch/s390/mm/pgalloc.c
@@ -21,7 +21,7 @@
int page_table_allocate_pgste = 0;
EXPORT_SYMBOL(page_table_allocate_pgste);

-static struct ctl_table page_table_sysctl[] = {
+static const struct ctl_table page_table_sysctl[] = {
{
.procname = "allocate_pgste",
.data = &page_table_allocate_pgste,
diff --git a/arch/x86/entry/vdso/vdso32-setup.c b/arch/x86/entry/vdso/vdso32-setup.c
index 76e4e74f35b5..f6d2d8aba643 100644
--- a/arch/x86/entry/vdso/vdso32-setup.c
+++ b/arch/x86/entry/vdso/vdso32-setup.c
@@ -57,7 +57,7 @@ __setup_param("vdso=", vdso_setup, vdso32_setup, 0);
/* Register vsyscall32 into the ABI table */
#include <linux/sysctl.h>

-static struct ctl_table abi_table2[] = {
+static const struct ctl_table abi_table2[] = {
{
.procname = "vsyscall32",
.data = &vdso32_enabled,
diff --git a/arch/x86/kernel/cpu/bus_lock.c b/arch/x86/kernel/cpu/bus_lock.c
index 704e9241b964..6cba85c79d42 100644
--- a/arch/x86/kernel/cpu/bus_lock.c
+++ b/arch/x86/kernel/cpu/bus_lock.c
@@ -49,7 +49,7 @@ static unsigned int sysctl_sld_mitigate = 1;
static DEFINE_SEMAPHORE(buslock_sem, 1);

#ifdef CONFIG_PROC_SYSCTL
-static struct ctl_table sld_sysctls[] = {
+static const struct ctl_table sld_sysctls[] = {
{
.procname = "split_lock_mitigate",
.data = &sysctl_sld_mitigate,
diff --git a/arch/x86/kernel/itmt.c b/arch/x86/kernel/itmt.c
index 51b805c727fc..083d8c4deb2b 100644
--- a/arch/x86/kernel/itmt.c
+++ b/arch/x86/kernel/itmt.c
@@ -64,7 +64,7 @@ static int sched_itmt_update_handler(const struct ctl_table *table, int write,
return ret;
}

-static struct ctl_table itmt_kern_table[] = {
+static const struct ctl_table itmt_kern_table[] = {
{
.procname = "sched_itmt_enabled",
.data = &sysctl_sched_itmt_enabled,
diff --git a/crypto/fips.c b/crypto/fips.c
index 8a784018ebfc..ec6574596e59 100644
--- a/crypto/fips.c
+++ b/crypto/fips.c
@@ -41,7 +41,7 @@ __setup("fips=", fips_enable);
static char fips_name[] = FIPS_MODULE_NAME;
static char fips_version[] = FIPS_MODULE_VERSION;

-static struct ctl_table crypto_sysctl_table[] = {
+static const struct ctl_table crypto_sysctl_table[] = {
{
.procname = "fips_enabled",
.data = &fips_enabled,
diff --git a/drivers/base/firmware_loader/fallback_table.c b/drivers/base/firmware_loader/fallback_table.c
index ddb70e29eb42..c8afc501a8a4 100644
--- a/drivers/base/firmware_loader/fallback_table.c
+++ b/drivers/base/firmware_loader/fallback_table.c
@@ -25,7 +25,7 @@ struct firmware_fallback_config fw_fallback_config = {
EXPORT_SYMBOL_NS_GPL(fw_fallback_config, "FIRMWARE_LOADER_PRIVATE");

#ifdef CONFIG_SYSCTL
-static struct ctl_table firmware_config_table[] = {
+static const struct ctl_table firmware_config_table[] = {
{
.procname = "force_sysfs_fallback",
.data = &fw_fallback_config.force_sysfs_fallback,
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index 51745ed1bbab..b163e043c687 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -3612,7 +3612,7 @@ static int cdrom_sysctl_handler(const struct ctl_table *ctl, int write,
}

/* Place files in /proc/sys/dev/cdrom */
-static struct ctl_table cdrom_table[] = {
+static const struct ctl_table cdrom_table[] = {
{
.procname = "info",
.data = &cdrom_sysctl_settings.info,
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 48fe96ab4649..e110857824fc 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -724,7 +724,7 @@ static int hpet_is_known(struct hpet_data *hdp)
return 0;
}

-static struct ctl_table hpet_table[] = {
+static const struct ctl_table hpet_table[] = {
{
.procname = "max-user-freq",
.data = &hpet_max_freq,
diff --git a/drivers/char/ipmi/ipmi_poweroff.c b/drivers/char/ipmi/ipmi_poweroff.c
index 941d2dcc8c9d..de84f59468a9 100644
--- a/drivers/char/ipmi/ipmi_poweroff.c
+++ b/drivers/char/ipmi/ipmi_poweroff.c
@@ -650,7 +650,7 @@ static struct ipmi_smi_watcher smi_watcher = {
#ifdef CONFIG_PROC_FS
#include <linux/sysctl.h>

-static struct ctl_table ipmi_table[] = {
+static const struct ctl_table ipmi_table[] = {
{ .procname = "poweroff_powercycle",
.data = &poweroff_powercycle,
.maxlen = sizeof(poweroff_powercycle),
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 23ee76bbb4aa..2581186fa61b 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1665,7 +1665,7 @@ static int proc_do_rointvec(const struct ctl_table *table, int write, void *buf,
return write ? 0 : proc_dointvec(table, 0, buf, lenp, ppos);
}

-static struct ctl_table random_table[] = {
+static const struct ctl_table random_table[] = {
{
.procname = "poolsize",
.data = &sysctl_poolsize,
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index 2406cda75b7b..5384d1bb4923 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -4802,7 +4802,7 @@ int i915_perf_remove_config_ioctl(struct drm_device *dev, void *data,
return ret;
}

-static struct ctl_table oa_table[] = {
+static const struct ctl_table oa_table[] = {
{
.procname = "perf_stream_paranoid",
.data = &i915_perf_stream_paranoid,
diff --git a/drivers/gpu/drm/xe/xe_observation.c b/drivers/gpu/drm/xe/xe_observation.c
index 8ec1b84cbb9e..57cf01efc07f 100644
--- a/drivers/gpu/drm/xe/xe_observation.c
+++ b/drivers/gpu/drm/xe/xe_observation.c
@@ -56,7 +56,7 @@ int xe_observation_ioctl(struct drm_device *dev, void *data, struct drm_file *fi
}
}

-static struct ctl_table observation_ctl_table[] = {
+static const struct ctl_table observation_ctl_table[] = {
{
.procname = "observation_paranoid",
.data = &xe_observation_paranoid,
diff --git a/drivers/hv/hv_common.c b/drivers/hv/hv_common.c
index 7a35c82976e0..9453f0c26f2a 100644
--- a/drivers/hv/hv_common.c
+++ b/drivers/hv/hv_common.c
@@ -141,7 +141,7 @@ static int sysctl_record_panic_msg = 1;
* sysctl option to allow the user to control whether kmsg data should be
* reported to Hyper-V on panic.
*/
-static struct ctl_table hv_ctl_table[] = {
+static const struct ctl_table hv_ctl_table[] = {
{
.procname = "hyperv_record_panic_msg",
.data = &sysctl_record_panic_msg,
diff --git a/drivers/macintosh/mac_hid.c b/drivers/macintosh/mac_hid.c
index b461b1bed25b..369d72f59b3c 100644
--- a/drivers/macintosh/mac_hid.c
+++ b/drivers/macintosh/mac_hid.c
@@ -215,7 +215,7 @@ static int mac_hid_toggle_emumouse(const struct ctl_table *table, int write,
}

/* file(s) in /proc/sys/dev/mac_hid */
-static struct ctl_table mac_hid_files[] = {
+static const struct ctl_table mac_hid_files[] = {
{
.procname = "mouse_button_emulation",
.data = &mouse_emulate_buttons,
diff --git a/drivers/md/md.c b/drivers/md/md.c
index aebe12b0ee27..0e06f9027d81 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -294,7 +294,7 @@ void mddev_destroy_serial_pool(struct mddev *mddev, struct md_rdev *rdev)

static struct ctl_table_header *raid_table_header;

-static struct ctl_table raid_table[] = {
+static const struct ctl_table raid_table[] = {
{
.procname = "speed_limit_min",
.data = &sysctl_speed_limit_min,
diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c
index 61b66e318488..7a3c34306de9 100644
--- a/drivers/misc/sgi-xp/xpc_main.c
+++ b/drivers/misc/sgi-xp/xpc_main.c
@@ -93,7 +93,7 @@ int xpc_disengage_timelimit = XPC_DISENGAGE_DEFAULT_TIMELIMIT;
static int xpc_disengage_min_timelimit; /* = 0 */
static int xpc_disengage_max_timelimit = 120;

-static struct ctl_table xpc_sys_xpc_hb[] = {
+static const struct ctl_table xpc_sys_xpc_hb[] = {
{
.procname = "hb_interval",
.data = &xpc_hb_interval,
@@ -111,7 +111,7 @@ static struct ctl_table xpc_sys_xpc_hb[] = {
.extra1 = &xpc_hb_check_min_interval,
.extra2 = &xpc_hb_check_max_interval},
};
-static struct ctl_table xpc_sys_xpc[] = {
+static const struct ctl_table xpc_sys_xpc[] = {
{
.procname = "disengage_timelimit",
.data = &xpc_disengage_timelimit,
diff --git a/drivers/perf/arm_pmuv3.c b/drivers/perf/arm_pmuv3.c
index b5cc11abc962..0e360feb3432 100644
--- a/drivers/perf/arm_pmuv3.c
+++ b/drivers/perf/arm_pmuv3.c
@@ -1279,7 +1279,7 @@ static int armv8pmu_proc_user_access_handler(const struct ctl_table *table, int
return 0;
}

-static struct ctl_table armv8_pmu_sysctl_table[] = {
+static const struct ctl_table armv8_pmu_sysctl_table[] = {
{
.procname = "perf_user_access",
.data = &sysctl_perf_user_access,
diff --git a/drivers/perf/riscv_pmu_sbi.c b/drivers/perf/riscv_pmu_sbi.c
index 1aa303f76cc7..ea96c0a88f73 100644
--- a/drivers/perf/riscv_pmu_sbi.c
+++ b/drivers/perf/riscv_pmu_sbi.c
@@ -1315,7 +1315,7 @@ static int riscv_pmu_proc_user_access_handler(const struct ctl_table *table,
return 0;
}

-static struct ctl_table sbi_pmu_sysctl_table[] = {
+static const struct ctl_table sbi_pmu_sysctl_table[] = {
{
.procname = "perf_user_access",
.data = &sysctl_perf_user_access,
diff --git a/drivers/scsi/scsi_sysctl.c b/drivers/scsi/scsi_sysctl.c
index 093774d77534..be4aef0f4f99 100644
--- a/drivers/scsi/scsi_sysctl.c
+++ b/drivers/scsi/scsi_sysctl.c
@@ -12,7 +12,7 @@
#include "scsi_priv.h"

-static struct ctl_table scsi_table[] = {
+static const struct ctl_table scsi_table[] = {
{ .procname = "logging_level",
.data = &scsi_logging_level,
.maxlen = sizeof(scsi_logging_level),
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 94127868bedf..effb7e768165 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -1639,7 +1639,7 @@ MODULE_PARM_DESC(allow_dio, "allow direct I/O (default: 0 (disallow))");
#ifdef CONFIG_SYSCTL
#include <linux/sysctl.h>

-static struct ctl_table sg_sysctls[] = {
+static const struct ctl_table sg_sysctls[] = {
{
.procname = "sg-big-buff",
.data = &sg_big_buff,
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index dcb1769c3625..0e84677712b4 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -3618,7 +3618,7 @@ void console_sysfs_notify(void)
sysfs_notify(&consdev->kobj, NULL, "active");
}

-static struct ctl_table tty_table[] = {
+static const struct ctl_table tty_table[] = {
{
.procname = "legacy_tiocsti",
.data = &tty_legacy_tiocsti,
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index 528395133b4f..163f7f1d70f1 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -84,7 +84,7 @@ module_param(balloon_boot_timeout, uint, 0444);
#ifdef CONFIG_XEN_BALLOON_MEMORY_HOTPLUG
static int xen_hotplug_unpopulated;

-static struct ctl_table balloon_table[] = {
+static const struct ctl_table balloon_table[] = {
{
.procname = "hotplug_unpopulated",
.data = &xen_hotplug_unpopulated,
diff --git a/fs/aio.c b/fs/aio.c
index 50671640b588..7b976b564cfc 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -224,7 +224,7 @@ static unsigned long aio_nr; /* current system wide number of aio requests */
static unsigned long aio_max_nr = 0x10000; /* system wide maximum number of aio requests */
/*----end sysctl variables---*/
#ifdef CONFIG_SYSCTL
-static struct ctl_table aio_sysctls[] = {
+static const struct ctl_table aio_sysctls[] = {
{
.procname = "aio-nr",
.data = &aio_nr,
diff --git a/fs/cachefiles/error_inject.c b/fs/cachefiles/error_inject.c
index 1715d5ca2b2d..e341ade47dd8 100644
--- a/fs/cachefiles/error_inject.c
+++ b/fs/cachefiles/error_inject.c
@@ -11,7 +11,7 @@
unsigned int cachefiles_error_injection_state;

static struct ctl_table_header *cachefiles_sysctl;
-static struct ctl_table cachefiles_sysctls[] = {
+static const struct ctl_table cachefiles_sysctls[] = {
{
.procname = "error_injection",
.data = &cachefiles_error_injection_state,
diff --git a/fs/coda/sysctl.c b/fs/coda/sysctl.c
index 9f2d5743e2c8..0df46f09b6cc 100644
--- a/fs/coda/sysctl.c
+++ b/fs/coda/sysctl.c
@@ -14,7 +14,7 @@

static struct ctl_table_header *fs_table_header;

-static struct ctl_table coda_table[] = {
+static const struct ctl_table coda_table[] = {
{
.procname = "timeout",
.data = &coda_timeout,
diff --git a/fs/coredump.c b/fs/coredump.c
index d48edb37bc35..591700e1b2ce 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -995,7 +995,7 @@ static int proc_dostring_coredump(const struct ctl_table *table, int write,
static const unsigned int core_file_note_size_min = CORE_FILE_NOTE_SIZE_DEFAULT;
static const unsigned int core_file_note_size_max = CORE_FILE_NOTE_SIZE_MAX;

-static struct ctl_table coredump_sysctls[] = {
+static const struct ctl_table coredump_sysctls[] = {
{
.procname = "core_uses_pid",
.data = &core_uses_pid,
diff --git a/fs/dcache.c b/fs/dcache.c
index b4d5e9e1e43d..370302d4e488 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -192,7 +192,7 @@ static int proc_nr_dentry(const struct ctl_table *table, int write, void *buffer
return proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
}

-static struct ctl_table fs_dcache_sysctls[] = {
+static const struct ctl_table fs_dcache_sysctls[] = {
{
.procname = "dentry-state",
.data = &dentry_stat,
diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index b20e565b9c5e..1096ff8562fa 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -45,7 +45,7 @@ static int pty_limit_min;
static int pty_limit_max = INT_MAX;
static atomic_t pty_count = ATOMIC_INIT(0);

-static struct ctl_table pty_table[] = {
+static const struct ctl_table pty_table[] = {
{
.procname = "max",
.maxlen = sizeof(int),
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index f9898e60dd8b..7c0980db77b3 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -318,7 +318,7 @@ static void unlist_file(struct epitems_head *head)
static long long_zero;
static long long_max = LONG_MAX;

-static struct ctl_table epoll_table[] = {
+static const struct ctl_table epoll_table[] = {
{
.procname = "max_user_watches",
.data = &max_user_watches,
diff --git a/fs/exec.c b/fs/exec.c
index 98cb7ba9983c..96229a6a4dff 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -2142,7 +2142,7 @@ static int proc_dointvec_minmax_coredump(const struct ctl_table *table, int writ
return error;
}

-static struct ctl_table fs_exec_sysctls[] = {
+static const struct ctl_table fs_exec_sysctls[] = {
{
.procname = "suid_dumpable",
.data = &suid_dumpable,
diff --git a/fs/file_table.c b/fs/file_table.c
index 976736be47cb..70ed0b3a5a0e 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -106,7 +106,7 @@ static int proc_nr_files(const struct ctl_table *table, int write, void *buffer,
return proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
}

-static struct ctl_table fs_stat_sysctls[] = {
+static const struct ctl_table fs_stat_sysctls[] = {
{
.procname = "file-nr",
.data = &files_stat,
diff --git a/fs/fuse/sysctl.c b/fs/fuse/sysctl.c
index b272bb333005..63fb1e5bee30 100644
--- a/fs/fuse/sysctl.c
+++ b/fs/fuse/sysctl.c
@@ -13,7 +13,7 @@ static struct ctl_table_header *fuse_table_header;
/* Bound by fuse_init_out max_pages, which is a u16 */
static unsigned int sysctl_fuse_max_pages_limit = 65535;

-static struct ctl_table fuse_sysctl_table[] = {
+static const struct ctl_table fuse_sysctl_table[] = {
{
.procname = "max_pages_limit",
.data = &fuse_max_pages_limit,
diff --git a/fs/inode.c b/fs/inode.c
index 6b4c77268fc0..5587aabdaa5e 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -184,7 +184,7 @@ static int proc_nr_inodes(const struct ctl_table *table, int write, void *buffer
return proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
}

-static struct ctl_table inodes_sysctls[] = {
+static const struct ctl_table inodes_sysctls[] = {
{
.procname = "inode-nr",
.data = &inodes_stat,
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 4ec22c2f2ea3..d6cac1c89c2a 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -419,7 +419,7 @@ EXPORT_SYMBOL_GPL(lockd_down);
* Sysctl parameters (same as module parameters, different interface).
*/

-static struct ctl_table nlm_sysctls[] = {
+static const struct ctl_table nlm_sysctls[] = {
{
.procname = "nlm_grace_period",
.data = &nlm_grace_period,
diff --git a/fs/locks.c b/fs/locks.c
index 25afc8d9c9d1..1619cddfa7a4 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -97,7 +97,7 @@ static int leases_enable = 1;
static int lease_break_time = 45;

#ifdef CONFIG_SYSCTL
-static struct ctl_table locks_sysctls[] = {
+static const struct ctl_table locks_sysctls[] = {
{
.procname = "leases-enable",
.data = &leases_enable,
diff --git a/fs/namei.c b/fs/namei.c
index 9d30c7aa9aa6..6a18b2ea21b7 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1099,7 +1099,7 @@ static int sysctl_protected_fifos __read_mostly;
static int sysctl_protected_regular __read_mostly;

#ifdef CONFIG_SYSCTL
-static struct ctl_table namei_sysctls[] = {
+static const struct ctl_table namei_sysctls[] = {
{
.procname = "protected_symlinks",
.data = &sysctl_protected_symlinks,
diff --git a/fs/namespace.c b/fs/namespace.c
index 23e81c2a1e3f..3819c322244e 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -5927,7 +5927,7 @@ const struct proc_ns_operations mntns_operations = {
};

#ifdef CONFIG_SYSCTL
-static struct ctl_table fs_namespace_sysctls[] = {
+static const struct ctl_table fs_namespace_sysctls[] = {
{
.procname = "mount-max",
.data = &sysctl_mount_max,
diff --git a/fs/nfs/nfs4sysctl.c b/fs/nfs/nfs4sysctl.c
index 886a7c4c60b3..d1a92d8f8ba4 100644
--- a/fs/nfs/nfs4sysctl.c
+++ b/fs/nfs/nfs4sysctl.c
@@ -17,7 +17,7 @@ static const int nfs_set_port_min;
static const int nfs_set_port_max = 65535;
static struct ctl_table_header *nfs4_callback_sysctl_table;

-static struct ctl_table nfs4_cb_sysctls[] = {
+static const struct ctl_table nfs4_cb_sysctls[] = {
{
.procname = "nfs_callback_tcpport",
.data = &nfs_callback_set_tcpport,
diff --git a/fs/nfs/sysctl.c b/fs/nfs/sysctl.c
index e645be1a3381..f579df0e8d67 100644
--- a/fs/nfs/sysctl.c
+++ b/fs/nfs/sysctl.c
@@ -14,7 +14,7 @@

static struct ctl_table_header *nfs_callback_sysctl_table;

-static struct ctl_table nfs_cb_sysctls[] = {
+static const struct ctl_table nfs_cb_sysctls[] = {
{
.procname = "nfs_mountpoint_timeout",
.data = &nfs_mountpoint_expiry_timeout,
diff --git a/fs/notify/dnotify/dnotify.c b/fs/notify/dnotify/dnotify.c
index 6004dfdfdf0f..c4cdaf5fa7ed 100644
--- a/fs/notify/dnotify/dnotify.c
+++ b/fs/notify/dnotify/dnotify.c
@@ -20,7 +20,7 @@

static int dir_notify_enable __read_mostly = 1;
#ifdef CONFIG_SYSCTL
-static struct ctl_table dnotify_sysctls[] = {
+static const struct ctl_table dnotify_sysctls[] = {
{
.procname = "dir-notify-enable",
.data = &dir_notify_enable,
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index 2d85c71717d6..004cfdae1316 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -58,7 +58,7 @@ static int fanotify_max_queued_events __read_mostly;
static long ft_zero = 0;
static long ft_int_max = INT_MAX;

-static struct ctl_table fanotify_table[] = {
+static const struct ctl_table fanotify_table[] = {
{
.procname = "max_user_groups",
.data = &init_user_ns.ucount_max[UCOUNT_FANOTIFY_GROUPS],
diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index e0c48956608a..b372fb2c56bd 100644
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -58,7 +58,7 @@ struct kmem_cache *inotify_inode_mark_cachep __ro_after_init;
static long it_zero = 0;
static long it_int_max = INT_MAX;

-static struct ctl_table inotify_table[] = {
+static const struct ctl_table inotify_table[] = {
{
.procname = "max_user_instances",
.data = &init_user_ns.ucount_max[UCOUNT_INOTIFY_INSTANCES],
diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c
index 20aa37b67cfb..ddd761cf44c8 100644
--- a/fs/ocfs2/stackglue.c
+++ b/fs/ocfs2/stackglue.c
@@ -650,7 +650,7 @@ static int ocfs2_sysfs_init(void)
* and easier to preserve the name.
*/

-static struct ctl_table ocfs2_nm_table[] = {
+static const struct ctl_table ocfs2_nm_table[] = {
{
.procname = "hb_ctl_path",
.data = ocfs2_hb_ctl_path,
diff --git a/fs/pipe.c b/fs/pipe.c
index 12b22c2723b7..638fb318e7be 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -1477,7 +1477,7 @@ static int proc_dopipe_max_size(const struct ctl_table *table, int write,
do_proc_dopipe_max_size_conv, NULL);
}

-static struct ctl_table fs_pipe_sysctls[] = {
+static const struct ctl_table fs_pipe_sysctls[] = {
{
.procname = "pipe-max-size",
.data = &pipe_max_size,
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index f9578918cfb2..825c5c2e0962 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -2926,7 +2926,7 @@ static int do_proc_dqstats(const struct ctl_table *table, int write,
return proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
}

-static struct ctl_table fs_dqstats_table[] = {
+static const struct ctl_table fs_dqstats_table[] = {
{
.procname = "lookups",
.data = &dqstats.stat[DQST_LOOKUPS],
diff --git a/fs/sysctls.c b/fs/sysctls.c
index 8dbde9a802fa..ad429dffeb4b 100644
--- a/fs/sysctls.c
+++ b/fs/sysctls.c
@@ -7,7 +7,7 @@
#include <linux/init.h>
#include <linux/sysctl.h>

-static struct ctl_table fs_shared_sysctls[] = {
+static const struct ctl_table fs_shared_sysctls[] = {
{
.procname = "overflowuid",
.data = &fs_overflowuid,
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index 7c0bd0b55f88..97c4d71115d8 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -36,7 +36,7 @@
static int sysctl_unprivileged_userfaultfd __read_mostly;

#ifdef CONFIG_SYSCTL
-static struct ctl_table vm_userfaultfd_table[] = {
+static const struct ctl_table vm_userfaultfd_table[] = {
{
.procname = "unprivileged_userfaultfd",
.data = &sysctl_unprivileged_userfaultfd,
diff --git a/fs/verity/init.c b/fs/verity/init.c
index f440f0e61e3e..6e8d33b50240 100644
--- a/fs/verity/init.c
+++ b/fs/verity/init.c
@@ -10,7 +10,7 @@
#include <linux/ratelimit.h>

#ifdef CONFIG_SYSCTL
-static struct ctl_table fsverity_sysctl_table[] = {
+static const struct ctl_table fsverity_sysctl_table[] = {
#ifdef CONFIG_FS_VERITY_BUILTIN_SIGNATURES
{
.procname = "require_signatures",
diff --git a/fs/xfs/xfs_sysctl.c b/fs/xfs/xfs_sysctl.c
index c84df23b494d..751dc74a3067 100644
--- a/fs/xfs/xfs_sysctl.c
+++ b/fs/xfs/xfs_sysctl.c
@@ -66,7 +66,7 @@ xfs_deprecated_dointvec_minmax(
return proc_dointvec_minmax(ctl, write, buffer, lenp, ppos);
}

-static struct ctl_table xfs_table[] = {
+static const struct ctl_table xfs_table[] = {
{
.procname = "irix_sgid_inherit",
.data = &xfs_params.sgid_inherit.val,
diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c
index 22c7f41ff642..903b4d573d3d 100644
--- a/init/do_mounts_initrd.c
+++ b/init/do_mounts_initrd.c
@@ -21,7 +21,7 @@ phys_addr_t phys_initrd_start __initdata;
unsigned long phys_initrd_size __initdata;

#ifdef CONFIG_SYSCTL
-static struct ctl_table kern_do_mounts_initrd_table[] = {
+static const struct ctl_table kern_do_mounts_initrd_table[] = {
{
.procname = "real-root-dev",
.data = &real_root_dev,
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index d3403c8216db..72ad31225fb3 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -156,7 +156,7 @@ static int __read_mostly sysctl_io_uring_disabled;
static int __read_mostly sysctl_io_uring_group = -1;

#ifdef CONFIG_SYSCTL
-static struct ctl_table kernel_io_uring_disabled_table[] = {
+static const struct ctl_table kernel_io_uring_disabled_table[] = {
{
.procname = "io_uring_disabled",
.data = &sysctl_io_uring_disabled,
diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c
index 54318e0b4557..15b17e86e198 100644
--- a/ipc/ipc_sysctl.c
+++ b/ipc/ipc_sysctl.c
@@ -73,7 +73,7 @@ int ipc_mni = IPCMNI;
int ipc_mni_shift = IPCMNI_SHIFT;
int ipc_min_cycle = RADIX_TREE_MAP_SIZE;

-static struct ctl_table ipc_sysctls[] = {
+static const struct ctl_table ipc_sysctls[] = {
{
.procname = "shmmax",
.data = &init_ipc_ns.shm_ctlmax,
diff --git a/ipc/mq_sysctl.c b/ipc/mq_sysctl.c
index b70dc2ff22d8..0dd12e1c9f53 100644
--- a/ipc/mq_sysctl.c
+++ b/ipc/mq_sysctl.c
@@ -20,7 +20,7 @@ static int msg_max_limit_max = HARD_MSGMAX;
static int msg_maxsize_limit_min = MIN_MSGSIZEMAX;
static int msg_maxsize_limit_max = HARD_MSGSIZEMAX;

-static struct ctl_table mq_sysctls[] = {
+static const struct ctl_table mq_sysctls[] = {
{
.procname = "queues_max",
.data = &init_ipc_ns.mq_queues_max,
diff --git a/kernel/acct.c b/kernel/acct.c
index 179848ad33e9..31222e8cd534 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -76,7 +76,7 @@ static int acct_parm[3] = {4, 2, 30};
#define ACCT_TIMEOUT (acct_parm[2]) /* foo second timeout between checks */

#ifdef CONFIG_SYSCTL
-static struct ctl_table kern_acct_table[] = {
+static const struct ctl_table kern_acct_table[] = {
{
.procname = "acct",
.data = &acct_parm,
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 5684e8ce132d..fbcf07f98d8b 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -6124,7 +6124,7 @@ static int bpf_unpriv_handler(const struct ctl_table *table, int write,
return ret;
}

-static struct ctl_table bpf_syscall_table[] = {
+static const struct ctl_table bpf_syscall_table[] = {
{
.procname = "unprivileged_bpf_disabled",
.data = &sysctl_unprivileged_bpf_disabled,
diff --git a/kernel/delayacct.c b/kernel/delayacct.c
index dead51de8eb5..75659ac036cd 100644
--- a/kernel/delayacct.c
+++ b/kernel/delayacct.c
@@ -64,7 +64,7 @@ static int sysctl_delayacct(const struct ctl_table *table, int write, void *buff
return err;
}

-static struct ctl_table kern_delayacct_table[] = {
+static const struct ctl_table kern_delayacct_table[] = {
{
.procname = "task_delayacct",
.data = NULL,
diff --git a/kernel/exit.c b/kernel/exit.c
index 1dcddfe537ee..3485e5fc499e 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -85,7 +85,7 @@
static unsigned int oops_limit = 10000;

#ifdef CONFIG_SYSCTL
-static struct ctl_table kern_exit_table[] = {
+static const struct ctl_table kern_exit_table[] = {
{
.procname = "oops_limit",
.data = &oops_limit,
diff --git a/kernel/hung_task.c b/kernel/hung_task.c
index c18717189f32..62a5d8927ce9 100644
--- a/kernel/hung_task.c
+++ b/kernel/hung_task.c
@@ -272,7 +272,7 @@ static int proc_dohung_task_timeout_secs(const struct ctl_table *table, int writ
* and hung_task_check_interval_secs
*/
static const unsigned long hung_task_timeout_max = (LONG_MAX / HZ);
-static struct ctl_table hung_task_sysctls[] = {
+static const struct ctl_table hung_task_sysctls[] = {
#ifdef CONFIG_SMP
{
.procname = "hung_task_all_cpu_backtrace",
diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
index c0caa14880c3..71b0809e06d6 100644
--- a/kernel/kexec_core.c
+++ b/kernel/kexec_core.c
@@ -925,7 +925,7 @@ static int kexec_limit_handler(const struct ctl_table *table, int write,
return proc_dointvec(&tmp, write, buffer, lenp, ppos);
}

-static struct ctl_table kexec_core_sysctls[] = {
+static const struct ctl_table kexec_core_sysctls[] = {
{
.procname = "kexec_load_disabled",
.data = &kexec_load_disabled,
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index b027a4030976..9a15fb343be8 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -954,7 +954,7 @@ static int proc_kprobes_optimization_handler(const struct ctl_table *table,
return ret;
}

-static struct ctl_table kprobe_sysctls[] = {
+static const struct ctl_table kprobe_sysctls[] = {
{
.procname = "kprobes-optimization",
.data = &sysctl_kprobes_optimization,
diff --git a/kernel/latencytop.c b/kernel/latencytop.c
index 7a75eab9c179..39a5fcdff9f9 100644
--- a/kernel/latencytop.c
+++ b/kernel/latencytop.c
@@ -77,7 +77,7 @@ static int sysctl_latencytop(const struct ctl_table *table, int write, void *buf
return err;
}

-static struct ctl_table latencytop_sysctl[] = {
+static const struct ctl_table latencytop_sysctl[] = {
{
.procname = "latencytop",
.data = &latencytop_enabled,
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 2d8ec0351ef9..926b796ba71a 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -79,7 +79,7 @@ module_param(lock_stat, int, 0644);
#endif

#ifdef CONFIG_SYSCTL
-static struct ctl_table kern_lockdep_table[] = {
+static const struct ctl_table kern_lockdep_table[] = {
#ifdef CONFIG_PROVE_LOCKING
{
.procname = "prove_locking",
diff --git a/kernel/panic.c b/kernel/panic.c
index fbc59b3b64d0..d8635d5cecb2 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -84,7 +84,7 @@ ATOMIC_NOTIFIER_HEAD(panic_notifier_list);
EXPORT_SYMBOL(panic_notifier_list);

#ifdef CONFIG_SYSCTL
-static struct ctl_table kern_panic_table[] = {
+static const struct ctl_table kern_panic_table[] = {
#ifdef CONFIG_SMP
{
.procname = "oops_all_cpu_backtrace",
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c
index d70ab49d5b4a..0f23285be4f9 100644
--- a/kernel/pid_namespace.c
+++ b/kernel/pid_namespace.c
@@ -282,7 +282,7 @@ static int pid_ns_ctl_handler(const struct ctl_table *table, int write,
}

extern int pid_max;
-static struct ctl_table pid_ns_ctl_table[] = {
+static const struct ctl_table pid_ns_ctl_table[] = {
{
.procname = "ns_last_pid",
.maxlen = sizeof(int),
diff --git a/kernel/pid_sysctl.h b/kernel/pid_sysctl.h
index 18ecaef6be41..5d8f981de7c5 100644
--- a/kernel/pid_sysctl.h
+++ b/kernel/pid_sysctl.h
@@ -31,7 +31,7 @@ static int pid_mfd_noexec_dointvec_minmax(const struct ctl_table *table,
return err;
}

-static struct ctl_table pid_ns_ctl_table_vm[] = {
+static const struct ctl_table pid_ns_ctl_table_vm[] = {
{
.procname = "memfd_noexec",
.data = &init_pid_ns.memfd_noexec_scope,
diff --git a/kernel/printk/sysctl.c b/kernel/printk/sysctl.c
index f5072dc85f7a..da77f3f5c1fe 100644
--- a/kernel/printk/sysctl.c
+++ b/kernel/printk/sysctl.c
@@ -20,7 +20,7 @@ static int proc_dointvec_minmax_sysadmin(const struct ctl_table *table, int writ
return proc_dointvec_minmax(table, write, buffer, lenp, ppos);
}

-static struct ctl_table printk_sysctls[] = {
+static const struct ctl_table printk_sysctls[] = {
{
.procname = "printk",
.data = &console_loglevel,
diff --git a/kernel/reboot.c b/kernel/reboot.c
index a701000bab34..b5a8569e5d81 100644
--- a/kernel/reboot.c
+++ b/kernel/reboot.c
@@ -1287,7 +1287,7 @@ static struct attribute *reboot_attrs[] = {
};

#ifdef CONFIG_SYSCTL
-static struct ctl_table kern_reboot_table[] = {
+static const struct ctl_table kern_reboot_table[] = {
{
.procname = "poweroff_cmd",
.data = &poweroff_cmd,
diff --git a/kernel/sched/autogroup.c b/kernel/sched/autogroup.c
index db68a964e34e..83d46b9b8ec8 100644
--- a/kernel/sched/autogroup.c
+++ b/kernel/sched/autogroup.c
@@ -9,7 +9,7 @@ static struct autogroup autogroup_default;
static atomic_t autogroup_seq_nr;

#ifdef CONFIG_SYSCTL
-static struct ctl_table sched_autogroup_sysctls[] = {
+static const struct ctl_table sched_autogroup_sysctls[] = {
{
.procname = "sched_autogroup_enabled",
.data = &sysctl_sched_autogroup_enabled,
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 3e5a6bf587f9..00fea6f32ae5 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4646,7 +4646,7 @@ static int sysctl_schedstats(const struct ctl_table *table, int write, void *buf
#endif /* CONFIG_SCHEDSTATS */

#ifdef CONFIG_SYSCTL
-static struct ctl_table sched_core_sysctls[] = {
+static const struct ctl_table sched_core_sysctls[] = {
#ifdef CONFIG_SCHEDSTATS
{
.procname = "sched_schedstats",
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index d94f2ed6d1f4..dab4887d6406 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -26,7 +26,7 @@
static unsigned int sysctl_sched_dl_period_max = 1 << 22; /* ~4 seconds */
static unsigned int sysctl_sched_dl_period_min = 100; /* 100 us */
#ifdef CONFIG_SYSCTL
-static struct ctl_table sched_dl_sysctls[] = {
+static const struct ctl_table sched_dl_sysctls[] = {
{
.procname = "sched_deadline_period_max_us",
.data = &sysctl_sched_dl_period_max,
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 3e9ca38512de..1692dbb67d7a 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -130,7 +130,7 @@ static unsigned int sysctl_numa_balancing_promote_rate_limit = 65536;
#endif

#ifdef CONFIG_SYSCTL
-static struct ctl_table sched_fair_sysctls[] = {
+static const struct ctl_table sched_fair_sysctls[] = {
#ifdef CONFIG_CFS_BANDWIDTH
{
.procname = "sched_cfs_bandwidth_slice_us",
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index bd66a46b06ac..4b8e33c615b1 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -26,7 +26,7 @@ static int sched_rt_handler(const struct ctl_table *table, int write, void *buff
size_t *lenp, loff_t *ppos);
static int sched_rr_handler(const struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos);
-static struct ctl_table sched_rt_sysctls[] = {
+static const struct ctl_table sched_rt_sysctls[] = {
{
.procname = "sched_rt_period_us",
.data = &sysctl_sched_rt_period,
diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
index 9748a4c8d668..20d59b0bc928 100644
--- a/kernel/sched/topology.c
+++ b/kernel/sched/topology.c
@@ -312,7 +312,7 @@ static int sched_energy_aware_handler(const struct ctl_table *table, int write,
return ret;
}

-static struct ctl_table sched_energy_aware_sysctls[] = {
+static const struct ctl_table sched_energy_aware_sysctls[] = {
{
.procname = "sched_energy_aware",
.data = &sysctl_sched_energy_aware,
diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index 385d48293a5f..f59381c4a2ff 100644
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -2450,7 +2450,7 @@ static int seccomp_actions_logged_handler(const struct ctl_table *ro_table, int
return ret;
}

-static struct ctl_table seccomp_sysctl_table[] = {
+static const struct ctl_table seccomp_sysctl_table[] = {
{
.procname = "actions_avail",
.data = (void *) &seccomp_actions_avail,
diff --git a/kernel/signal.c b/kernel/signal.c
index 989b1cc9116a..77f32c2d6ccb 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -4931,7 +4931,7 @@ static inline void siginfo_buildtime_checks(void)
}

#if defined(CONFIG_SYSCTL)
-static struct ctl_table signal_debug_table[] = {
+static const struct ctl_table signal_debug_table[] = {
#ifdef CONFIG_SYSCTL_EXCEPTION_TRACE
{
.procname = "exception-trace",
diff --git a/kernel/stackleak.c b/kernel/stackleak.c
index 39fd620a7db6..c1bfc14cd36e 100644
--- a/kernel/stackleak.c
+++ b/kernel/stackleak.c
@@ -44,7 +44,7 @@ static int stack_erasing_sysctl(const struct ctl_table *table, int write,
state ? "enabled" : "disabled");
return ret;
}
-static struct ctl_table stackleak_sysctls[] = {
+static const struct ctl_table stackleak_sysctls[] = {
{
.procname = "stack_erasing",
.data = NULL,
diff --git a/kernel/sysctl-test.c b/kernel/sysctl-test.c
index 3ac98bb7fb82..eb2842bd0557 100644
--- a/kernel/sysctl-test.c
+++ b/kernel/sysctl-test.c
@@ -374,7 +374,7 @@ static void sysctl_test_register_sysctl_sz_invalid_extra_value(
struct kunit *test)
{
unsigned char data = 0;
- struct ctl_table table_foo[] = {
+ const struct ctl_table table_foo[] = {
{
.procname = "foo",
.data = &data,
@@ -386,7 +386,7 @@ static void sysctl_test_register_sysctl_sz_invalid_extra_value(
},
};

- struct ctl_table table_bar[] = {
+ const struct ctl_table table_bar[] = {
{
.procname = "bar",
.data = &data,
@@ -398,7 +398,7 @@ static void sysctl_test_register_sysctl_sz_invalid_extra_value(
},
};

- struct ctl_table table_qux[] = {
+ const struct ctl_table table_qux[] = {
{
.procname = "qux",
.data = &data,
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 5c9202cb8f59..3a0132cb0d5d 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1609,7 +1609,7 @@ int proc_do_static_key(const struct ctl_table *table, int write,
return ret;
}

-static struct ctl_table kern_table[] = {
+static const struct ctl_table kern_table[] = {
{
.procname = "panic",
.data = &panic_timeout,
@@ -2030,7 +2030,7 @@ static struct ctl_table kern_table[] = {
#endif
};

-static struct ctl_table vm_table[] = {
+static const struct ctl_table vm_table[] = {
{
.procname = "overcommit_memory",
.data = &sysctl_overcommit_memory,
diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index a5860bf6d16f..79a1f83d2944 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -301,7 +301,7 @@ static int timer_migration_handler(const struct ctl_table *table, int write,
return ret;
}

-static struct ctl_table timer_sysctl[] = {
+static const struct ctl_table timer_sysctl[] = {
{
.procname = "timer_migration",
.data = &sysctl_timer_migration,
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 2e113f8b13a2..489cbab3d64c 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -8786,7 +8786,7 @@ ftrace_enable_sysctl(const struct ctl_table *table, int write,
return ret;
}

-static struct ctl_table ftrace_sysctls[] = {
+static const struct ctl_table ftrace_sysctls[] = {
{
.procname = "ftrace_enabled",
.data = &ftrace_enabled,
diff --git a/kernel/trace/trace_events_user.c b/kernel/trace/trace_events_user.c
index 17bcad8f79de..97325fbd6283 100644
--- a/kernel/trace/trace_events_user.c
+++ b/kernel/trace/trace_events_user.c
@@ -2899,7 +2899,7 @@ static int set_max_user_events_sysctl(const struct ctl_table *table, int write,
return ret;
}

-static struct ctl_table user_event_sysctls[] = {
+static const struct ctl_table user_event_sysctls[] = {
{
.procname = "user_events_max",
.data = &max_user_events,
diff --git a/kernel/umh.c b/kernel/umh.c
index be9234270777..b4da45a3a7cf 100644
--- a/kernel/umh.c
+++ b/kernel/umh.c
@@ -544,7 +544,7 @@ static int proc_cap_handler(const struct ctl_table *table, int write,
return 0;
}

-static struct ctl_table usermodehelper_table[] = {
+static const struct ctl_table usermodehelper_table[] = {
{
.procname = "bset",
.data = &usermodehelper_bset,
diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c
index 7282f61a8650..bfbaaecb1dd4 100644
--- a/kernel/utsname_sysctl.c
+++ b/kernel/utsname_sysctl.c
@@ -75,7 +75,7 @@ static DEFINE_CTL_TABLE_POLL(hostname_poll);
static DEFINE_CTL_TABLE_POLL(domainname_poll);

// Note: update 'enum uts_proc' to match any changes to this table
-static struct ctl_table uts_kern_table[] = {
+static const struct ctl_table uts_kern_table[] = {
{
.procname = "arch",
.data = init_uts_ns.name.machine,
@@ -129,7 +129,7 @@ static struct ctl_table uts_kern_table[] = {
*/
void uts_proc_notify(enum uts_proc proc)
{
- struct ctl_table *table = &uts_kern_table[proc];
+ const struct ctl_table *table = &uts_kern_table[proc];

proc_sys_poll_notify(table->poll);
}
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 41e0f7e9fa35..613e73ef367c 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -1094,7 +1094,7 @@ static int proc_watchdog_cpumask(const struct ctl_table *table, int write,

static const int sixty = 60;

-static struct ctl_table watchdog_sysctls[] = {
+static const struct ctl_table watchdog_sysctls[] = {
{
.procname = "watchdog",
.data = &watchdog_user_enabled,
diff --git a/lib/test_sysctl.c b/lib/test_sysctl.c
index b6696fa1d426..4249e0cc8aaf 100644
--- a/lib/test_sysctl.c
+++ b/lib/test_sysctl.c
@@ -71,7 +71,7 @@ static struct test_sysctl_data test_data = {
};

/* These are all under /proc/sys/debug/test_sysctl/ */
-static struct ctl_table test_table[] = {
+static const struct ctl_table test_table[] = {
{
.procname = "int_0001",
.data = &test_data.int_0001,
@@ -177,7 +177,7 @@ static int test_sysctl_setup_node_tests(void)
}

/* Used to test that unregister actually removes the directory */
-static struct ctl_table test_table_unregister[] = {
+static const struct ctl_table test_table_unregister[] = {
{
.procname = "unregister_error",
.data = &test_data.int_0001,
@@ -220,7 +220,7 @@ static int test_sysctl_run_register_mount_point(void)
return 0;
}

-static struct ctl_table test_table_empty[] = { };
+static const struct ctl_table test_table_empty[] = { };

static int test_sysctl_run_register_empty(void)
{
diff --git a/mm/compaction.c b/mm/compaction.c
index a2b16b08cbbf..62e8ee230e1c 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -3297,7 +3297,7 @@ static int proc_dointvec_minmax_warn_RT_change(const struct ctl_table *table,
return ret;
}

-static struct ctl_table vm_compaction[] = {
+static const struct ctl_table vm_compaction[] = {
{
.procname = "compact_memory",
.data = &sysctl_compact_memory,
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index c498874a7170..3857b9d72c84 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -4845,7 +4845,7 @@ static int hugetlb_overcommit_handler(const struct ctl_table *table, int write,
return ret;
}

-static struct ctl_table hugetlb_table[] = {
+static const struct ctl_table hugetlb_table[] = {
{
.procname = "nr_hugepages",
.data = NULL,
diff --git a/mm/hugetlb_vmemmap.c b/mm/hugetlb_vmemmap.c
index 57b7f591eee8..7735972add01 100644
--- a/mm/hugetlb_vmemmap.c
+++ b/mm/hugetlb_vmemmap.c
@@ -693,7 +693,7 @@ void hugetlb_vmemmap_optimize_folios(struct hstate *h, struct list_head *folio_l
free_vmemmap_page_list(&vmemmap_pages);
}

-static struct ctl_table hugetlb_vmemmap_sysctls[] = {
+static const struct ctl_table hugetlb_vmemmap_sysctls[] = {
{
.procname = "hugetlb_optimize_vmemmap",
.data = &vmemmap_optimize_enabled,
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index a7b8ccd29b6f..995a15eb67e2 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -124,7 +124,7 @@ const struct attribute_group memory_failure_attr_group = {
.attrs = memory_failure_attr,
};

-static struct ctl_table memory_failure_table[] = {
+static const struct ctl_table memory_failure_table[] = {
{
.procname = "memory_failure_early_kill",
.data = &sysctl_memory_failure_early_kill,
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 1c485beb0b93..c8280a39119c 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -699,7 +699,7 @@ static void queue_oom_reaper(struct task_struct *tsk)
}

#ifdef CONFIG_SYSCTL
-static struct ctl_table vm_oom_kill_table[] = {
+static const struct ctl_table vm_oom_kill_table[] = {
{
.procname = "panic_on_oom",
.data = &sysctl_panic_on_oom,
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index d213ead95675..fb523107701f 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -2313,7 +2313,7 @@ static int page_writeback_cpu_online(unsigned int cpu)
/* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */
static const unsigned long dirty_bytes_min = 2 * PAGE_SIZE;

-static struct ctl_table vm_page_writeback_sysctls[] = {
+static const struct ctl_table vm_page_writeback_sysctls[] = {
{
.procname = "dirty_background_ratio",
.data = &dirty_background_ratio,
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index cae7b93864c2..6224a2ab5e86 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6172,7 +6172,7 @@ static int percpu_pagelist_high_fraction_sysctl_handler(const struct ctl_table *
return ret;
}

-static struct ctl_table page_alloc_sysctl_table[] = {
+static const struct ctl_table page_alloc_sysctl_table[] = {
{
.procname = "min_free_kbytes",
.data = &min_free_kbytes,
diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index 1edc12862a7d..9b6c2f157f83 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -2038,7 +2038,7 @@ static int apparmor_dointvec(const struct ctl_table *table, int write,
return proc_dointvec(table, write, buffer, lenp, ppos);
}

-static struct ctl_table apparmor_sysctl_table[] = {
+static const struct ctl_table apparmor_sysctl_table[] = {
#ifdef CONFIG_USER_NS
{
.procname = "unprivileged_userns_apparmor_policy",
diff --git a/security/keys/sysctl.c b/security/keys/sysctl.c
index 91f000eef3ad..cde08c478f32 100644
--- a/security/keys/sysctl.c
+++ b/security/keys/sysctl.c
@@ -9,7 +9,7 @@
#include <linux/sysctl.h>
#include "internal.h"

-static struct ctl_table key_sysctls[] = {
+static const struct ctl_table key_sysctls[] = {
{
.procname = "maxkeys",
.data = &key_quota_maxkeys,
diff --git a/security/yama/yama_lsm.c b/security/yama/yama_lsm.c
index e1a5e13ea269..54bd5f535ac1 100644
--- a/security/yama/yama_lsm.c
+++ b/security/yama/yama_lsm.c
@@ -454,7 +454,7 @@ static int yama_dointvec_minmax(const struct ctl_table *table, int write,

static int max_scope = YAMA_SCOPE_NO_ATTACH;

-static struct ctl_table yama_sysctl_table[] = {
+static const struct ctl_table yama_sysctl_table[] = {
{
.procname = "ptrace_scope",
.data = &ptrace_scope,

---
base-commit: 9d89551994a430b50c4fffcb1e617a057fa76e20
change-id: 20250109-jag-ctl_table_const-38f6b2ccbba7

Best regards,
--
Joel Granados <joel.granados@kernel.org>