diff options
88 files changed, 458 insertions, 653 deletions
diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c index c19aa81ddc8c..7364de008bab 100644 --- a/arch/arm64/kernel/armv8_deprecated.c +++ b/arch/arm64/kernel/armv8_deprecated.c @@ -203,7 +203,7 @@ static void __init register_insn_emulation(struct insn_emulation_ops *ops) } static int emulation_proc_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, + void *buffer, size_t *lenp, loff_t *ppos) { int ret = 0; diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index 94289d126993..35cb5e66c504 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -341,8 +341,7 @@ static unsigned int find_supported_vector_length(unsigned int vl) #ifdef CONFIG_SYSCTL static int sve_proc_do_default_vl(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret; int vl = sve_default_vl; diff --git a/arch/mips/lasat/sysctl.c b/arch/mips/lasat/sysctl.c index e666fe26c50d..2119541a5b8b 100644 --- a/arch/mips/lasat/sysctl.c +++ b/arch/mips/lasat/sysctl.c @@ -95,16 +95,15 @@ int proc_lasat_ip(struct ctl_table *table, int write, len = 0; p = buffer; while (len < *lenp) { - if (get_user(c, p++)) - return -EFAULT; + c = *p; + p++; if (c == 0 || c == '\n') break; len++; } if (len >= sizeof(ipbuf)-1) len = sizeof(ipbuf) - 1; - if (copy_from_user(ipbuf, buffer, len)) - return -EFAULT; + memcpy(ipbuf, buffer, len); ipbuf[len] = 0; *ppos += *lenp; /* Now see if we can convert it to a valid IP */ @@ -122,11 +121,9 @@ int proc_lasat_ip(struct ctl_table *table, int write, if (len > *lenp) len = *lenp; if (len) - if (copy_to_user(buffer, ipbuf, len)) - return -EFAULT; + memcpy(buffer, ipbuf, len); if (len < *lenp) { - if (put_user('\n', ((char *) buffer) + len)) - return -EFAULT; + *((char *)buffer + len) = '\n'; len++; } *lenp = len; diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c index aa738cad1338..d74a4c7d5df6 100644 --- a/arch/s390/appldata/appldata_base.c +++ b/arch/s390/appldata/appldata_base.c @@ -51,10 +51,9 @@ static struct platform_device *appldata_pdev; */ static const char appldata_proc_name[APPLDATA_PROC_NAME_LENGTH] = "appldata"; static int appldata_timer_handler(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos); + void *buffer, size_t *lenp, loff_t *ppos); static int appldata_interval_handler(struct ctl_table *ctl, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos); + void *buffer, size_t *lenp, loff_t *ppos); static struct ctl_table_header *appldata_sysctl_header; static struct ctl_table appldata_table[] = { @@ -217,7 +216,7 @@ static void __appldata_vtimer_setup(int cmd) */ static int appldata_timer_handler(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int timer_active = appldata_timer_active; int rc; @@ -250,7 +249,7 @@ appldata_timer_handler(struct ctl_table *ctl, int write, */ static int appldata_interval_handler(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int interval = appldata_interval; int rc; @@ -280,7 +279,7 @@ appldata_interval_handler(struct ctl_table *ctl, int write, */ static int appldata_generic_handler(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct appldata_ops *ops = NULL, *tmp_ops; struct list_head *lh; diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c index 6d321f5f101d..636446003a06 100644 --- a/arch/s390/kernel/debug.c +++ b/arch/s390/kernel/debug.c @@ -867,7 +867,7 @@ static int debug_active = 1; * if debug_active is already off */ static int s390dbf_procactive(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { if (!write || debug_stoppable || !debug_active) return proc_dointvec(table, write, buffer, lenp, ppos); diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c index 5f70cefc13e4..332b542548cd 100644 --- a/arch/s390/kernel/topology.c +++ b/arch/s390/kernel/topology.c @@ -594,7 +594,7 @@ static int __init topology_setup(char *str) early_param("topology", topology_setup); static int topology_ctl_handler(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int enabled = topology_is_enabled(); int new_mode; diff --git a/arch/s390/mm/cmm.c b/arch/s390/mm/cmm.c index ae989b740376..36bce727897b 100644 --- a/arch/s390/mm/cmm.c +++ b/arch/s390/mm/cmm.c @@ -245,7 +245,7 @@ static int cmm_skip_blanks(char *cp, char **endp) } static int cmm_pages_handler(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { long nr = cmm_get_pages(); struct ctl_table ctl_entry = { @@ -264,7 +264,7 @@ static int cmm_pages_handler(struct ctl_table *ctl, int write, } static int cmm_timed_pages_handler(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, + void *buffer, size_t *lenp, loff_t *ppos) { long nr = cmm_get_timed_pages(); @@ -284,7 +284,7 @@ static int cmm_timed_pages_handler(struct ctl_table *ctl, int write, } static int cmm_timeout_handler(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { char buf[64], *p; long nr, seconds; @@ -297,8 +297,7 @@ static int cmm_timeout_handler(struct ctl_table *ctl, int write, if (write) { len = min(*lenp, sizeof(buf)); - if (copy_from_user(buf, buffer, len)) - return -EFAULT; + memcpy(buf, buffer, len); buf[len - 1] = '\0'; cmm_skip_blanks(buf, &p); nr = simple_strtoul(p, &p, 0); @@ -311,8 +310,7 @@ static int cmm_timeout_handler(struct ctl_table *ctl, int write, cmm_timeout_pages, cmm_timeout_seconds); if (len > *lenp) len = *lenp; - if (copy_to_user(buffer, buf, len)) - return -EFAULT; + memcpy(buffer, buf, len); *lenp = len; *ppos += len; } diff --git a/arch/x86/kernel/itmt.c b/arch/x86/kernel/itmt.c index 1cb3ca9bba49..1afbdd1dd777 100644 --- a/arch/x86/kernel/itmt.c +++ b/arch/x86/kernel/itmt.c @@ -39,8 +39,7 @@ static bool __read_mostly sched_itmt_capable; unsigned int __read_mostly sysctl_sched_itmt_enabled; static int sched_itmt_update_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { unsigned int old_sysctl; int ret; diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c index faca0f346fff..e3bbe108eb54 100644 --- a/drivers/cdrom/cdrom.c +++ b/drivers/cdrom/cdrom.c @@ -3631,7 +3631,7 @@ static void cdrom_update_settings(void) } static int cdrom_sysctl_handler(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret; diff --git a/drivers/char/random.c b/drivers/char/random.c index 0d10e31fd342..1e0db78b83ba 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -2057,7 +2057,7 @@ static char sysctl_bootid[16]; * sysctl system call, as 16 bytes of binary data. */ static int proc_do_uuid(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table fake_table; unsigned char buf[64], tmp_uuid[16], *uuid; diff --git a/drivers/macintosh/mac_hid.c b/drivers/macintosh/mac_hid.c index 7af0c536d568..28b8581b44dd 100644 --- a/drivers/macintosh/mac_hid.c +++ b/drivers/macintosh/mac_hid.c @@ -183,8 +183,7 @@ static void mac_hid_stop_emulation(void) } static int mac_hid_toggle_emumouse(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int *valp = table->data; int old_val = *valp; diff --git a/drivers/parport/procfs.c b/drivers/parport/procfs.c index 48804049d697..ee7b5daabfd4 100644 --- a/drivers/parport/procfs.c +++ b/drivers/parport/procfs.c @@ -34,7 +34,7 @@ #define PARPORT_MAX_SPINTIME_VALUE 1000 static int do_active_device(struct ctl_table *table, int write, - void __user *result, size_t *lenp, loff_t *ppos) + void *result, size_t *lenp, loff_t *ppos) { struct parport *port = (struct parport *)table->extra1; char buffer[256]; @@ -65,13 +65,13 @@ static int do_active_device(struct ctl_table *table, int write, *lenp = len; *ppos += len; - - return copy_to_user(result, buffer, len) ? -EFAULT : 0; + memcpy(result, buffer, len); + return 0; } #ifdef CONFIG_PARPORT_1284 static int do_autoprobe(struct ctl_table *table, int write, - void __user *result, size_t *lenp, loff_t *ppos) + void *result, size_t *lenp, loff_t *ppos) { struct parport_device_info *info = table->extra2; const char *str; @@ -108,13 +108,13 @@ static int do_autoprobe(struct ctl_table *table, int write, *ppos += len; - return copy_to_user (result, buffer, len) ? -EFAULT : 0; + memcpy(result, buffer, len); + return 0; } #endif /* IEEE1284.3 support. */ static int do_hardware_base_addr(struct ctl_table *table, int write, - void __user *result, - size_t *lenp, loff_t *ppos) + void *result, size_t *lenp, loff_t *ppos) { struct parport *port = (struct parport *)table->extra1; char buffer[20]; @@ -136,13 +136,12 @@ static int do_hardware_base_addr(struct ctl_table *table, int write, *lenp = len; *ppos += len; - - return copy_to_user(result, buffer, len) ? -EFAULT : 0; + memcpy(result, buffer, len); + return 0; } static int do_hardware_irq(struct ctl_table *table, int write, - void __user *result, - size_t *lenp, loff_t *ppos) + void *result, size_t *lenp, loff_t *ppos) { struct parport *port = (struct parport *)table->extra1; char buffer[20]; @@ -164,13 +163,12 @@ static int do_hardware_irq(struct ctl_table *table, int write, *lenp = len; *ppos += len; - - return copy_to_user(result, buffer, len) ? -EFAULT : 0; + memcpy(result, buffer, len); + return 0; } static int do_hardware_dma(struct ctl_table *table, int write, - void __user *result, - size_t *lenp, loff_t *ppos) + void *result, size_t *lenp, loff_t *ppos) { struct parport *port = (struct parport *)table->extra1; char buffer[20]; @@ -192,13 +190,12 @@ static int do_hardware_dma(struct ctl_table *table, int write, *lenp = len; *ppos += len; - - return copy_to_user(result, buffer, len) ? -EFAULT : 0; + memcpy(result, buffer, len); + return 0; } static int do_hardware_modes(struct ctl_table *table, int write, - void __user *result, - size_t *lenp, loff_t *ppos) + void *result, size_t *lenp, loff_t *ppos) { struct parport *port = (struct parport *)table->extra1; char buffer[40]; @@ -231,8 +228,8 @@ static int do_hardware_modes(struct ctl_table *table, int write, *lenp = len; *ppos += len; - - return copy_to_user(result, buffer, len) ? -EFAULT : 0; + memcpy(result, buffer, len); + return 0; } #define PARPORT_PORT_DIR(CHILD) { .procname = NULL, .mode = 0555, .child = CHILD } diff --git a/fs/dcache.c b/fs/dcache.c index b280e07e162b..8dd4d8d7bd0b 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -165,7 +165,7 @@ static long get_nr_dentry_negative(void) return sum < 0 ? 0 : sum; } -int proc_nr_dentry(struct ctl_table *table, int write, void __user *buffer, +int proc_nr_dentry(struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { dentry_stat.nr_dentry = get_nr_dentry(); diff --git a/fs/drop_caches.c b/fs/drop_caches.c index dc1a1d5d825b..f00fcc4a4f72 100644 --- a/fs/drop_caches.c +++ b/fs/drop_caches.c @@ -47,7 +47,7 @@ static void drop_pagecache_sb(struct super_block *sb, void *unused) } int drop_caches_sysctl_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, loff_t *ppos) + void *buffer, size_t *length, loff_t *ppos) { int ret; diff --git a/fs/file_table.c b/fs/file_table.c index 30d55c9a1744..3b612535391f 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -80,14 +80,14 @@ EXPORT_SYMBOL_GPL(get_max_files); */ #if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS) int proc_nr_files(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { files_stat.nr_files = get_nr_files(); return proc_doulongvec_minmax(table, write, buffer, lenp, ppos); } #else int proc_nr_files(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } diff --git a/fs/fscache/main.c b/fs/fscache/main.c index 59c2494efda3..c1e6cc9091aa 100644 --- a/fs/fscache/main.c +++ b/fs/fscache/main.c @@ -51,8 +51,7 @@ static unsigned fscache_op_max_active = 2; static struct ctl_table_header *fscache_sysctl_header; static int fscache_max_active_sysctl(struct ctl_table *table, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct workqueue_struct **wqp = table->extra1; unsigned int *datap = table->data; diff --git a/fs/inode.c b/fs/inode.c index 93d9252a00ab..cc6e701b7e5d 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -108,7 +108,7 @@ long get_nr_dirty_inodes(void) */ #ifdef CONFIG_SYSCTL int proc_nr_inodes(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { inodes_stat.nr_inodes = get_nr_inodes(); inodes_stat.nr_unused = get_nr_inodes_unused(); diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index b6f5d459b087..df2143e05c57 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -539,13 +539,13 @@ out: return err; } -static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf, +static ssize_t proc_sys_call_handler(struct file *filp, void __user *ubuf, size_t count, loff_t *ppos, int write) { struct inode *inode = file_inode(filp); struct ctl_table_header *head = grab_header(inode); struct ctl_table *table = PROC_I(inode)->sysctl_entry; - void *new_buf = NULL; + void *kbuf; ssize_t error; if (IS_ERR(head)) @@ -564,27 +564,38 @@ static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf, if (!table->proc_handler) goto out; - error = BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, &count, - ppos, &new_buf); + if (write) { + kbuf = memdup_user_nul(ubuf, count); + if (IS_ERR(kbuf)) { + error = PTR_ERR(kbuf); + goto out; + } + } else { + error = -ENOMEM; + kbuf = kzalloc(count, GFP_KERNEL); + if (!kbuf) + goto out; + } + + error = BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, &kbuf, &count, + ppos); if (error) - goto out; + goto out_free_buf; /* careful: calling conventions are nasty here */ - if (new_buf) { - mm_segment_t old_fs; - - old_fs = get_fs(); - set_fs(KERNEL_DS); - error = table->proc_handler(table, write, (void __user *)new_buf, - &count, ppos); - set_fs(old_fs); - kfree(new_buf); - } else { - error = table->proc_handler(table, write, buf, &count, ppos); + error = table->proc_handler(table, write, kbuf, &count, ppos); + if (error) + goto out_free_buf; + + if (!write) { + error = -EFAULT; + if (copy_to_user(ubuf, kbuf, count)) + goto out_free_buf; } - if (!error) - error = count; + error = count; +out_free_buf: + kfree(kbuf); out: sysctl_head_finish(head); diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index b6a4f692d345..7b4bac91146b 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -2841,7 +2841,7 @@ const struct quotactl_ops dquot_quotactl_sysfile_ops = { EXPORT_SYMBOL(dquot_quotactl_sysfile_ops); static int do_proc_dqstats(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { unsigned int type = (unsigned long *)table->data - dqstats.stat; s64 value = percpu_counter_sum(&dqstats.counter[type]); diff --git a/fs/xfs/xfs_sysctl.c b/fs/xfs/xfs_sysctl.c index 31b3bdbd2eba..021ef96d0542 100644 --- a/fs/xfs/xfs_sysctl.c +++ b/fs/xfs/xfs_sysctl.c @@ -13,7 +13,7 @@ STATIC int xfs_stats_clear_proc_handler( struct ctl_table *ctl, int write, - void __user *buffer, + void *buffer, size_t *lenp, loff_t *ppos) { @@ -33,7 +33,7 @@ STATIC int xfs_panic_mask_proc_handler( struct ctl_table *ctl, int write, - void __user *buffer, + void *buffer, size_t *lenp, loff_t *ppos) { diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h index c11b413d5b1a..0b41fd5fc96b 100644 --- a/include/linux/bpf-cgroup.h +++ b/include/linux/bpf-cgroup.h @@ -138,8 +138,7 @@ int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor, int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head, struct ctl_table *table, int write, - void __user *buf, size_t *pcount, - loff_t *ppos, void **new_buf, + void **buf, size_t *pcount, loff_t *ppos, enum bpf_attach_type type); int __cgroup_bpf_run_filter_setsockopt(struct sock *sock, int *level, @@ -302,12 +301,12 @@ int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key, }) -#define BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, count, pos, nbuf) \ +#define BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, count, pos) \ ({ \ int __ret = 0; \ if (cgroup_bpf_enabled) \ __ret = __cgroup_bpf_run_filter_sysctl(head, table, write, \ - buf, count, pos, nbuf, \ + buf, count, pos, \ BPF_CGROUP_SYSCTL); \ __ret; \ }) @@ -429,7 +428,7 @@ static inline int bpf_percpu_cgroup_storage_update(struct bpf_map *map, #define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr) ({ 0; }) #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) ({ 0; }) #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(type,major,minor,access) ({ 0; }) -#define BPF_CGROUP_RUN_PROG_SYSCTL(head,table,write,buf,count,pos,nbuf) ({ 0; }) +#define BPF_CGROUP_RUN_PROG_SYSCTL(head,table,write,buf,count,pos) ({ 0; }) #define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) ({ 0; }) #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, \ optlen, max_optlen, retval) ({ retval; }) diff --git a/include/linux/compaction.h b/include/linux/compaction.h index 4b898cdbdf05..a0eabfbeb0e1 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -86,7 +86,7 @@ static inline unsigned long compact_gap(unsigned int order) #ifdef CONFIG_COMPACTION extern int sysctl_compact_memory; extern int sysctl_compaction_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, loff_t *ppos); + void *buffer, size_t *length, loff_t *ppos); extern int sysctl_extfrag_threshold; extern int sysctl_compact_unevictable_allowed; diff --git a/include/linux/fs.h b/include/linux/fs.h index 4f6f59b4f22a..9b028d260649 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -3536,11 +3536,11 @@ ssize_t simple_attr_write(struct file *file, const char __user *buf, struct ctl_table; int proc_nr_files(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos); + void *buffer, size_t *lenp, loff_t *ppos); int proc_nr_dentry(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos); + void *buffer, size_t *lenp, loff_t *ppos); int proc_nr_inodes(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos); + void *buffer, size_t *lenp, loff_t *ppos); int __init get_filesystem_list(char *buf); #define __FMODE_EXEC ((__force int) FMODE_EXEC) diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index db95244a62d4..ddfc377de0d2 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -1005,8 +1005,7 @@ extern void disable_trace_on_warning(void); extern int __disable_trace_on_warning; int tracepoint_printk_sysctl(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); + void *buffer, size_t *lenp, loff_t *ppos); #else /* CONFIG_TRACING */ static inline void disable_trace_on_warning(void) { } diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 43a1cef8f0f1..92c21c5ccc58 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -105,14 +105,13 @@ struct hugepage_subpool *hugepage_new_subpool(struct hstate *h, long max_hpages, void hugepage_put_subpool(struct hugepage_subpool *spool); void reset_vma_resv_huge_pages(struct vm_area_struct *vma); -int hugetlb_sysctl_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *); -int hugetlb_overcommit_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *); -int hugetlb_treat_movable_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *); - -#ifdef CONFIG_NUMA -int hugetlb_mempolicy_sysctl_handler(struct ctl_table *, int, - void __user *, size_t *, loff_t *); -#endif +int hugetlb_sysctl_handler(struct ctl_table *, int, void *, size_t *, loff_t *); +int hugetlb_overcommit_handler(struct ctl_table *, int, void *, size_t *, + loff_t *); +int hugetlb_treat_movable_handler(struct ctl_table *, int, void *, size_t *, + loff_t *); +int hugetlb_mempolicy_sysctl_handler(struct ctl_table *, int, void *, size_t *, + loff_t *); int copy_hugetlb_page_range(struct mm_struct *, struct mm_struct *, struct vm_area_struct *); long follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *, diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index 04bdaf01112c..594265bfd390 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -312,7 +312,7 @@ DEFINE_INSN_CACHE_OPS(optinsn); #ifdef CONFIG_SYSCTL extern int sysctl_kprobes_optimization; extern int proc_kprobes_optimization_handler(struct ctl_table *table, - int write, void __user *buffer, + int write, void *buffer, size_t *length, loff_t *ppos); #endif extern void wait_for_kprobe_optimizer(void); diff --git a/include/linux/latencytop.h b/include/linux/latencytop.h index 9022f0c2e2e4..abe3d95f795b 100644 --- a/include/linux/latencytop.h +++ b/include/linux/latencytop.h @@ -38,8 +38,8 @@ account_scheduler_latency(struct task_struct *task, int usecs, int inter) void clear_tsk_latency_tracing(struct task_struct *p); -extern int sysctl_latencytop(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos); +int sysctl_latencytop(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos); #else diff --git a/include/linux/mm.h b/include/linux/mm.h index 9c4e7e76dedd..a7b1ef8ed970 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -201,10 +201,10 @@ extern int sysctl_overcommit_memory; extern int sysctl_overcommit_ratio; extern unsigned long sysctl_overcommit_kbytes; -extern int overcommit_ratio_handler(struct ctl_table *, int, void __user *, - size_t *, loff_t *); -extern int overcommit_kbytes_handler(struct ctl_table *, int, void __user *, - size_t *, loff_t *); +int overcommit_ratio_handler(struct ctl_table *, int, void *, size_t *, + loff_t *); +int overcommit_kbytes_handler(struct ctl_table *, int, void *, size_t *, + loff_t *); #define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n)) @@ -2957,8 +2957,8 @@ extern bool process_shares_mm(struct task_struct *p, struct mm_struct *mm); #ifdef CONFIG_SYSCTL extern int sysctl_drop_caches; -int drop_caches_sysctl_handler(struct ctl_table *, int, - void __user *, size_t *, loff_t *); +int drop_caches_sysctl_handler(struct ctl_table *, int, void *, size_t *, + loff_t *); #endif void drop_slab(void); diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index b2af594ef0f7..93cf20f41e26 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -910,22 +910,21 @@ static inline int is_highmem(struct zone *zone) /* These two functions are used to setup the per zone pages min values */ struct ctl_table; -int min_free_kbytes_sysctl_handler(struct ctl_table *, int, - void __user *, size_t *, loff_t *); -int watermark_scale_factor_sysctl_handler(struct ctl_table *, int, - void __user *, size_t *, loff_t *); +int min_free_kbytes_sysctl_handler(struct ctl_table *, int, void *, size_t *, + loff_t *); +int watermark_scale_factor_sysctl_handler(struct ctl_table *, int, void *, + size_t *, loff_t *); extern int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES]; -int lowmem_reserve_ratio_sysctl_handler(struct ctl_table *, int, - void __user *, size_t *, loff_t *); +int lowmem_reserve_ratio_sysctl_handler(struct ctl_table *, int, void *, + size_t *, loff_t *); int percpu_pagelist_fraction_sysctl_handler(struct ctl_table *, int, - void __user *, size_t *, loff_t *); + void *, size_t *, loff_t *); int sysctl_min_unmapped_ratio_sysctl_handler(struct ctl_table *, int, - void __user *, size_t *, loff_t *); + void *, size_t *, loff_t *); int sysctl_min_slab_ratio_sysctl_handler(struct ctl_table *, int, - void __user *, size_t *, loff_t *); - -extern int numa_zonelist_order_handler(struct ctl_table *, int, - void __user *, size_t *, loff_t *); + void *, size_t *, loff_t *); +int numa_zonelist_order_handler(struct ctl_table *, int, + void *, size_t *, loff_t *); extern int percpu_pagelist_fraction; extern char numa_zonelist_order[]; #define NUMA_ZONELIST_ORDER_LEN 16 diff --git a/include/linux/nmi.h b/include/linux/nmi.h index 9003e29cde46..750c7f395ca9 100644 --- a/include/linux/nmi.h +++ b/include/linux/nmi.h @@ -202,16 +202,11 @@ static inline void watchdog_update_hrtimer_threshold(u64 period) { } #endif struct ctl_table; -extern int proc_watchdog(struct ctl_table *, int , - void __user *, size_t *, loff_t *); -extern int proc_nmi_watchdog(struct ctl_table *, int , - void __user *, size_t *, loff_t *); -extern int proc_soft_watchdog(struct ctl_table *, int , - void __user *, size_t *, loff_t *); -extern int proc_watchdog_thresh(struct ctl_table *, int , - void __user *, size_t *, loff_t *); -extern int proc_watchdog_cpumask(struct ctl_table *, int, - void __user *, size_t *, loff_t *); +int proc_watchdog(struct ctl_table *, int, void *, size_t *, loff_t *); +int proc_nmi_watchdog(struct ctl_table *, int , void *, size_t *, loff_t *); +int proc_soft_watchdog(struct ctl_table *, int , void *, size_t *, loff_t *); +int proc_watchdog_thresh(struct ctl_table *, int , void *, size_t *, loff_t *); +int proc_watchdog_cpumask(struct ctl_table *, int, void *, size_t *, loff_t *); #ifdef CONFIG_HAVE_ACPI_APEI_NMI #include <asm/nmi.h> diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 9c3e7619c929..347ea379622a 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -1280,15 +1280,12 @@ extern int sysctl_perf_cpu_time_max_percent; extern void perf_sample_event_took(u64 sample_len_ns); -extern int perf_proc_update_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); -extern int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); - +int perf_proc_update_handler(struct ctl_table *table, int write, + void *buffer, size_t *lenp, loff_t *ppos); +int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write, + void *buffer, size_t *lenp, loff_t *ppos); int perf_event_max_stack_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos); + void *buffer, size_t *lenp, loff_t *ppos); /* Access to perf_event_open(2) syscall. */ #define PERF_SECURITY_OPEN 0 diff --git a/include/linux/printk.h b/include/linux/printk.h index e061635e0409..fcde0772ec98 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -189,7 +189,7 @@ extern int printk_delay_msec; extern int dmesg_restrict; extern int -devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write, void __user *buf, +devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write, void *buf, size_t *lenp, loff_t *ppos); extern void wake_up_klogd(void); diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h index d4f6215ee03f..7b4d3a49b6c5 100644 --- a/include/linux/sched/sysctl.h +++ b/include/linux/sched/sysctl.h @@ -12,9 +12,8 @@ extern unsigned int sysctl_hung_task_panic; extern unsigned long sysctl_hung_task_timeout_secs; extern unsigned long sysctl_hung_task_check_interval_secs; extern int sysctl_hung_task_warnings; -extern int proc_dohung_task_timeout_secs(struct ctl_table *table, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos); +int proc_dohung_task_timeout_secs(struct ctl_table *table, int write, + void *buffer, size_t *lenp, loff_t *ppos); #else /* Avoid need for ifdefs elsewhere in the code */ enum { sysctl_hung_task_timeout_secs = 0 }; @@ -43,8 +42,7 @@ extern __read_mostly unsigned int sysctl_sched_migration_cost; extern __read_mostly unsigned int sysctl_sched_nr_migrate; int sched_proc_update_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, - loff_t *ppos); + void *buffer, size_t *length, loff_t *ppos); #endif /* @@ -72,33 +70,21 @@ extern unsigned int sysctl_sched_autogroup_enabled; extern int sysctl_sched_rr_timeslice; extern int sched_rr_timeslice; -extern int sched_rr_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); - -extern int sched_rt_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); - -#ifdef CONFIG_UCLAMP_TASK -extern int sysctl_sched_uclamp_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); -#endif - -extern int sysctl_numa_balancing(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); - -extern int sysctl_schedstats(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); +int sched_rr_handler(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos); +int sched_rt_handler(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos); +int sysctl_sched_uclamp_handler(struct ctl_table *table, int write, + void *buffer, size_t *lenp, loff_t *ppos); +int sysctl_numa_balancing(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos); +int sysctl_schedstats(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos); #if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL) extern unsigned int sysctl_sched_energy_aware; -extern int sched_energy_aware_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); +int sched_energy_aware_handler(struct ctl_table *table, int write, + void *buffer, size_t *lenp, loff_t *ppos); #endif #endif /* _LINUX_SCHED_SYSCTL_H */ diff --git a/include/linux/security.h b/include/linux/security.h index a8d9310472df..6aa229b252ce 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -211,7 +211,7 @@ struct request_sock; #ifdef CONFIG_MMU extern int mmap_min_addr_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos); + void *buffer, size_t *lenp, loff_t *ppos); #endif /* security_inode_init_security callback function to write xattrs */ diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index 36143ca40b56..f2401e45a3c2 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -44,35 +44,26 @@ struct ctl_dir; extern const int sysctl_vals[]; -typedef int proc_handler (struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos); - -extern int proc_dostring(struct ctl_table *, int, - void __user *, size_t *, loff_t *); -extern int proc_dointvec(struct ctl_table *, int, - void __user *, size_t *, loff_t *); -extern int proc_douintvec(struct ctl_table *, int, - void __user *, size_t *, loff_t *); -extern int proc_dointvec_minmax(struct ctl_table *, int, - void __user *, size_t *, loff_t *); -extern int proc_douintvec_minmax(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); -extern int proc_dointvec_jiffies(struct ctl_table *, int, - void __user *, size_t *, loff_t *); -extern int proc_dointvec_userhz_jiffies(struct ctl_table *, int, - void __user *, size_t *, loff_t *); -extern int proc_dointvec_ms_jiffies(struct ctl_table *, int, - void __user *, size_t *, loff_t *); -extern int proc_doulongvec_minmax(struct ctl_table *, int, - void __user *, size_t *, loff_t *); -extern int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int, - void __user *, size_t *, loff_t *); -extern int proc_do_large_bitmap(struct ctl_table *, int, - void __user *, size_t *, loff_t *); -extern int proc_do_static_key(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); +typedef int proc_handler(struct ctl_table *ctl, int write, void *buffer, + size_t *lenp, loff_t *ppos); + +int proc_dostring(struct ctl_table *, int, void *, size_t *, loff_t *); +int proc_dointvec(struct ctl_table *, int, void *, size_t *, loff_t *); +int proc_douintvec(struct ctl_table *, int, void *, size_t *, loff_t *); +int proc_dointvec_minmax(struct ctl_table *, int, void *, size_t *, loff_t *); +int proc_douintvec_minmax(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos); +int proc_dointvec_jiffies(struct ctl_table *, int, void *, size_t *, loff_t *); +int proc_dointvec_userhz_jiffies(struct ctl_table *, int, void *, size_t *, + loff_t *); +int proc_dointvec_ms_jiffies(struct ctl_table *, int, void *, size_t *, + loff_t *); +int proc_doulongvec_minmax(struct ctl_table *, int, void *, size_t *, loff_t *); +int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int, void *, + size_t *, loff_t *); +int proc_do_large_bitmap(struct ctl_table *, int, void *, size_t *, loff_t *); +int proc_do_static_key(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos); /* * Register a set of sysctl names by calling register_sysctl_table @@ -246,7 +237,7 @@ static inline void setup_sysctl_set(struct ctl_table_set *p, #endif /* CONFIG_SYSCTL */ -int sysctl_max_threads(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos); +int sysctl_max_threads(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos); #endif /* _LINUX_SYSCTL_H */ diff --git a/include/linux/timer.h b/include/linux/timer.h index 0dc19a8c39c9..07910ae5ddd9 100644 --- a/include/linux/timer.h +++ b/include/linux/timer.h @@ -201,8 +201,7 @@ struct ctl_table; extern unsigned int sysctl_timer_migration; int timer_migration_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); + void *buffer, size_t *lenp, loff_t *ppos); #endif unsigned long __round_jiffies(unsigned long j, int cpu); diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index 292485f3d24d..cb507151710f 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -16,8 +16,8 @@ extern int sysctl_stat_interval; #define DISABLE_NUMA_STAT 0 extern int sysctl_vm_numa_stat; DECLARE_STATIC_KEY_TRUE(vm_numa_stat_key); -extern int sysctl_vm_numa_stat_handler(struct ctl_table *table, - int write, void __user *buffer, size_t *length, loff_t *ppos); +int sysctl_vm_numa_stat_handler(struct ctl_table *table, int write, + void *buffer, size_t *length, loff_t *ppos); #endif struct reclaim_stat { @@ -274,8 +274,8 @@ void cpu_vm_stats_fold(int cpu); void refresh_zone_stat_thresholds(void); struct ctl_table; -int vmstat_refresh(struct ctl_table *, int write, - void __user *buffer, size_t *lenp, loff_t *ppos); +int vmstat_refresh(struct ctl_table *, int write, void *buffer, size_t *lenp, + loff_t *ppos); void drain_zonestat(struct zone *zone, struct per_cpu_pageset *); diff --git a/include/linux/writeback.h b/include/linux/writeback.h index a19d845dd7eb..f8a7e1a850fb 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -362,24 +362,18 @@ extern int vm_highmem_is_dirtyable; extern int block_dump; extern int laptop_mode; -extern int dirty_background_ratio_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); -extern int dirty_background_bytes_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); -extern int dirty_ratio_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); -extern int dirty_bytes_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); +int dirty_background_ratio_handler(struct ctl_table *table, int write, + void *buffer, size_t *lenp, loff_t *ppos); +int dirty_background_bytes_handler(struct ctl_table *table, int write, + void *buffer, size_t *lenp, loff_t *ppos); +int dirty_ratio_handler(struct ctl_table *table, int write, + void *buffer, size_t *lenp, loff_t *ppos); +int dirty_bytes_handler(struct ctl_table *table, int write, + void *buffer, size_t *lenp, loff_t *ppos); int dirtytime_interval_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos); - -struct ctl_table; -int dirty_writeback_centisecs_handler(struct ctl_table *, int, - void __user *, size_t *, loff_t *); + void *buffer, size_t *lenp, loff_t *ppos); +int dirty_writeback_centisecs_handler(struct ctl_table *table, int write, + void *buffer, size_t *lenp, loff_t *ppos); void global_dirty_limits(unsigned long *pbackground, unsigned long *pdirty); unsigned long wb_calc_thresh(struct bdi_writeback *wb, unsigned long thresh); diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c index affd66537e87..d1b8644bfb88 100644 --- a/ipc/ipc_sysctl.c +++ b/ipc/ipc_sysctl.c @@ -24,7 +24,7 @@ static void *get_ipc(struct ctl_table *table) #ifdef CONFIG_PROC_SYSCTL static int proc_ipc_dointvec(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table ipc_table; @@ -35,7 +35,7 @@ static int proc_ipc_dointvec(struct ctl_table *table, int write, } static int proc_ipc_dointvec_minmax(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table ipc_table; @@ -46,7 +46,7 @@ static int proc_ipc_dointvec_minmax(struct ctl_table *table, int write, } static int proc_ipc_dointvec_minmax_orphans(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct ipc_namespace *ns = current->nsproxy->ipc_ns; int err = proc_ipc_dointvec_minmax(table, write, buffer, lenp, ppos); @@ -59,7 +59,7 @@ static int proc_ipc_dointvec_minmax_orphans(struct ctl_table *table, int write, } static int proc_ipc_doulongvec_minmax(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table ipc_table; memcpy(&ipc_table, table, sizeof(ipc_table)); @@ -70,7 +70,7 @@ static int proc_ipc_doulongvec_minmax(struct ctl_table *table, int write, } static int proc_ipc_auto_msgmni(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table ipc_table; int dummy = 0; diff --git a/ipc/mq_sysctl.c b/ipc/mq_sysctl.c index 7c00f28923a8..72a92a08c848 100644 --- a/ipc/mq_sysctl.c +++ b/ipc/mq_sysctl.c @@ -19,7 +19,7 @@ static void *get_mq(struct ctl_table *table) } static int proc_mq_dointvec(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table mq_table; memcpy(&mq_table, table, sizeof(mq_table)); @@ -29,7 +29,7 @@ static int proc_mq_dointvec(struct ctl_table *table, int write, } static int proc_mq_dointvec_minmax(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table mq_table; memcpy(&mq_table, table, sizeof(mq_table)); diff --git a/kernel/bpf/cgroup.c b/kernel/bpf/cgroup.c index cb305e71e7de..977bc69bb1c5 100644 --- a/kernel/bpf/cgroup.c +++ b/kernel/bpf/cgroup.c @@ -1137,16 +1137,13 @@ const struct bpf_verifier_ops cg_dev_verifier_ops = { * @head: sysctl table header * @table: sysctl table * @write: sysctl is being read (= 0) or written (= 1) - * @buf: pointer to buffer passed by user space + * @buf: pointer to buffer (in and out) * @pcount: value-result argument: value is size of buffer pointed to by @buf, * result is size of @new_buf if program set new value, initial value * otherwise * @ppos: value-result argument: value is position at which read from or write * to sysctl is happening, result is new position if program overrode it, * initial value otherwise - * @new_buf: pointer to pointer to new buffer that will be allocated if program - * overrides new value provided by user space on sysctl write - * NOTE: it's caller responsibility to free *new_buf if it was set * @type: type of program to be executed * * Program is run when sysctl is being accessed, either read or written, and @@ -1157,8 +1154,7 @@ const struct bpf_verifier_ops cg_dev_verifier_ops = { */ int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head, struct ctl_table *table, int write, - void __user *buf, size_t *pcount, - loff_t *ppos, void **new_buf, + void **buf, size_t *pcount, loff_t *ppos, enum bpf_attach_type type) { struct bpf_sysctl_kern ctx = { @@ -1173,36 +1169,28 @@ int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head, .new_updated = 0, }; struct cgroup *cgrp; + loff_t pos = 0; int ret; ctx.cur_val = kmalloc_track_caller(ctx.cur_len, GFP_KERNEL); - if (ctx.cur_val) { - mm_segment_t old_fs; - loff_t pos = 0; - - old_fs = get_fs(); - set_fs(KERNEL_DS); - if (table->proc_handler(table, 0, (void __user *)ctx.cur_val, - &ctx.cur_len, &pos)) { - /* Let BPF program decide how to proceed. */ - ctx.cur_len = 0; - } - set_fs(old_fs); - } else { + if (!ctx.cur_val || + table->proc_handler(table, 0, ctx.cur_val, &ctx.cur_len, &pos)) { /* Let BPF program decide how to proceed. */ ctx.cur_len = 0; } - if (write && buf && *pcount) { + if (write && *buf && *pcount) { /* BPF program should be able to override new value with a * buffer bigger than provided by user. */ ctx.new_val = kmalloc_track_caller(PAGE_SIZE, GFP_KERNEL); ctx.new_len = min_t(size_t, PAGE_SIZE, *pcount); - if (!ctx.new_val || - copy_from_user(ctx.new_val, buf, ctx.new_len)) + if (ctx.new_val) { + memcpy(ctx.new_val, *buf, ctx.new_len); + } else { /* Let BPF program decide how to proceed. */ ctx.new_len = 0; + } } rcu_read_lock(); @@ -1213,7 +1201,8 @@ int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head, kfree(ctx.cur_val); if (ret == 1 && ctx.new_updated) { - *new_buf = ctx.new_val; + kfree(*buf); + *buf = ctx.new_val; *pcount = ctx.new_len; } else { kfree(ctx.new_val); diff --git a/kernel/events/callchain.c b/kernel/events/callchain.c index c2b41a263166..bdb1533ada81 100644 --- a/kernel/events/callchain.c +++ b/kernel/events/callchain.c @@ -236,7 +236,7 @@ exit_put: * sysctl_perf_event_max_contexts_per_stack. */ int perf_event_max_stack_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int *value = table->data; int new_value = *value, ret; diff --git a/kernel/events/core.c b/kernel/events/core.c index bc9b98a9af9a..f86d46f2c4d9 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -437,8 +437,7 @@ static void update_perf_cpu_limits(void) static bool perf_rotate_context(struct perf_cpu_context *cpuctx); int perf_proc_update_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret; int perf_cpu = sysctl_perf_cpu_time_max_percent; @@ -462,8 +461,7 @@ int perf_proc_update_handler(struct ctl_table *table, int write, int sysctl_perf_cpu_time_max_percent __read_mostly = DEFAULT_CPU_TIME_MAX_PERCENT; int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 2625c241ac00..ffbe03a45c16 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -892,7 +892,7 @@ static void unoptimize_all_kprobes(void) static DEFINE_MUTEX(kprobe_sysctl_mutex); int sysctl_kprobes_optimization; int proc_kprobes_optimization_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, + void *buffer, size_t *length, loff_t *ppos) { int ret; diff --git a/kernel/latencytop.c b/kernel/latencytop.c index 8d1c15832e55..166d7bf49666 100644 --- a/kernel/latencytop.c +++ b/kernel/latencytop.c @@ -269,8 +269,8 @@ static int __init init_lstats_procfs(void) return 0; } -int sysctl_latencytop(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) +int sysctl_latencytop(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos) { int err; diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index 01f8ba32cc0c..3ccaba5f15c0 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -263,7 +263,7 @@ void zap_pid_ns_processes(struct pid_namespace *pid_ns) #ifdef CONFIG_CHECKPOINT_RESTORE static int pid_ns_ctl_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct pid_namespace *pid_ns = task_active_pid_ns(current); struct ctl_table tmp = *table; diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index 9a9b6156270b..471f649b5868 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -173,7 +173,7 @@ __setup("printk.devkmsg=", control_devkmsg); char devkmsg_log_str[DEVKMSG_STR_MAX_SIZE] = "ratelimit"; int devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { char old_str[DEVKMSG_STR_MAX_SIZE]; unsigned int old; diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 3a61a3b8eaa9..5c589a2e4d19 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -1110,8 +1110,7 @@ static void uclamp_update_root_tg(void) { } #endif int sysctl_sched_uclamp_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { bool update_root_tg = false; int old_min, old_max; @@ -2723,7 +2722,7 @@ void set_numabalancing_state(bool enabled) #ifdef CONFIG_PROC_SYSCTL int sysctl_numa_balancing(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table t; int err; @@ -2797,8 +2796,8 @@ static void __init init_schedstats(void) } #ifdef CONFIG_PROC_SYSCTL -int sysctl_schedstats(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) +int sysctl_schedstats(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos) { struct ctl_table t; int err; diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 02f323b85b6d..b6077fd5b32f 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -645,8 +645,7 @@ struct sched_entity *__pick_last_entity(struct cfs_rq *cfs_rq) */ int sched_proc_update_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); unsigned int factor = get_update_sysctl_factor(); diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c index df11d88c9895..45da29de3ecc 100644 --- a/kernel/sched/rt.c +++ b/kernel/sched/rt.c @@ -2714,9 +2714,8 @@ static void sched_rt_do_global(void) def_rt_bandwidth.rt_period = ns_to_ktime(global_rt_period()); } -int sched_rt_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) +int sched_rt_handler(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos) { int old_period, old_runtime; static DEFINE_MUTEX(mutex); @@ -2754,9 +2753,8 @@ undo: return ret; } -int sched_rr_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) +int sched_rr_handler(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos) { int ret; static DEFINE_MUTEX(mutex); diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index 8344757bba6e..fa64b2ee9fe6 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -209,7 +209,7 @@ bool sched_energy_update; #ifdef CONFIG_PROC_SYSCTL int sched_energy_aware_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret, state; diff --git a/kernel/seccomp.c b/kernel/seccomp.c index 55a6184f5990..d653d8426de9 100644 --- a/kernel/seccomp.c +++ b/kernel/seccomp.c @@ -1776,7 +1776,7 @@ static void audit_actions_logged(u32 actions_logged, u32 old_actions_logged, } static int seccomp_actions_logged_handler(struct ctl_table *ro_table, int write, - void __user *buffer, size_t *lenp, + void *buffer, size_t *lenp, loff_t *ppos) { int ret; diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 3fafca3ced98..e961286d0e14 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -208,12 +208,10 @@ static int max_extfrag_threshold = 1000; #ifdef CONFIG_PROC_SYSCTL static int _proc_do_string(char *data, int maxlen, int write, - char __user *buffer, - size_t *lenp, loff_t *ppos) + char *buffer, size_t *lenp, loff_t *ppos) { size_t len; - char __user *p; - char c; + char c, *p; if (!data || !maxlen || !*lenp) { *lenp = 0; @@ -238,8 +236,7 @@ static int _proc_do_string(char *data, int maxlen, int write, *ppos += *lenp; p = buffer; while ((p - buffer) < *lenp && len < maxlen - 1) { - if (get_user(c, p++)) - return -EFAULT; + c = *(p++); if (c == 0 || c == '\n') break; data[len++] = c; @@ -261,11 +258,9 @@ static int _proc_do_string(char *data, int maxlen, int write, if (len > *lenp) len = *lenp; if (len) - if (copy_to_user(buffer, data, len)) - return -EFAULT; + memcpy(buffer, data, len); if (len < *lenp) { - if (put_user('\n', buffer + len)) - return -EFAULT; + buffer[len] = '\n'; len++; } *lenp = len; @@ -326,13 +321,13 @@ static bool proc_first_pos_non_zero_ignore(loff_t *ppos, * Returns 0 on success. */ int proc_dostring(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { if (write) proc_first_pos_non_zero_ignore(ppos, table); - return _proc_do_string((char *)(table->data), table->maxlen, write, - (char __user *)buffer, lenp, ppos); + return _proc_do_string(table->data, table->maxlen, write, buffer, lenp, + ppos); } static size_t proc_skip_spaces(char **buf) @@ -463,11 +458,10 @@ static int proc_get_long(char **buf, size_t *size, * @val: the integer to be converted * @neg: sign of the number, %TRUE for negative * - * In case of success %0 is returned and @buf and @size are updated with - * the amount of bytes written. + * In case of success @buf and @size are updated with the amount of bytes + * written. */ -static int proc_put_long(void __user **buf, size_t *size, unsigned long val, - bool neg) +static void proc_put_long(void **buf, size_t *size, unsigned long val, bool neg) { int len; char tmp[TMPBUFLEN], *p = tmp; @@ -476,24 +470,22 @@ static int proc_put_long(void __user **buf, size_t *size, unsigned long val, len = strlen(tmp); if (len > *size) len = *size; - if (copy_to_user(*buf, tmp, len)) - return -EFAULT; + memcpy(*buf, tmp, len); *size -= len; *buf += len; - return 0; } #undef TMPBUFLEN -static int proc_put_char(void __user **buf, size_t *size, char c) +static void proc_put_char(void **buf, size_t *size, char c) { if (*size) { - char __user **buffer = (char __user **)buf; - if (put_user(c, *buffer)) - return -EFAULT; - (*size)--, (*buffer)++; + char **buffer = (char **)buf; + **buffer = c; + + (*size)--; + (*buffer)++; *buf = *buffer; } - return 0; } static int do_proc_dointvec_conv(bool *negp, unsigned long *lvalp, @@ -541,7 +533,7 @@ static int do_proc_douintvec_conv(unsigned long *lvalp, static const char proc_wspace_sep[] = { ' ', '\t', '\n' }; static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table, - int write, void __user *buffer, + int write, void *buffer, size_t *lenp, loff_t *ppos, int (*conv)(bool *negp, unsigned long *lvalp, int *valp, int write, void *data), @@ -549,7 +541,7 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table, { int *i, vleft, first = 1, err = 0; size_t left; - char *kbuf = NULL, *p; + char *p; if (!tbl_data || !table->maxlen || !*lenp || (*ppos && !write)) { *lenp = 0; @@ -569,9 +561,7 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table, if (left > PAGE_SIZE - 1) left = PAGE_SIZE - 1; - p = kbuf = memdup_user_nul(buffer, left); - if (IS_ERR(kbuf)) - return PTR_ERR(kbuf); + p = buffer; } for (; left && vleft--; i++, first=0) { @@ -598,24 +588,17 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table, break; } if (!first) - err = proc_put_char(&buffer, &left, '\t'); - if (err) - break; - err = proc_put_long(&buffer, &left, lval, neg); - if (err) - break; + proc_put_char(&buffer, &left, '\t'); + proc_put_long(&buffer, &left, lval, neg); } } if (!write && !first && left && !err) - err = proc_put_char(&buffer, &left, '\n'); + proc_put_char(&buffer, &left, '\n'); if (write && !err && left) left -= proc_skip_spaces(&p); - if (write) { - kfree(kbuf); - if (first) - return err ? : -EINVAL; - } + if (write && first) + return err ? : -EINVAL; *lenp -= left; out: *ppos += *lenp; @@ -623,7 +606,7 @@ out: } static int do_proc_dointvec(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos, + void *buffer, size_t *lenp, loff_t *ppos, int (*conv)(bool *negp, unsigned long *lvalp, int *valp, int write, void *data), void *data) @@ -634,7 +617,7 @@ static int do_proc_dointvec(struct ctl_table *table, int write, static int do_proc_douintvec_w(unsigned int *tbl_data, struct ctl_table *table, - void __user *buffer, + void *buffer, size_t *lenp, loff_t *ppos, int (*conv)(unsigned long *lvalp, unsigned int *valp, @@ -645,7 +628,7 @@ static int do_proc_douintvec_w(unsigned int *tbl_data, int err = 0; size_t left; bool neg; - char *kbuf = NULL, *p; + char *p = buffer; left = *lenp; @@ -655,10 +638,6 @@ static int do_proc_douintvec_w(unsigned int *tbl_data, if (left > PAGE_SIZE - 1) left = PAGE_SIZE - 1; - p = kbuf = memdup_user_nul(buffer, left); - if (IS_ERR(kbuf)) - return -EINVAL; - left -= proc_skip_spaces(&p); if (!left) { err = -EINVAL; @@ -682,7 +661,6 @@ static int do_proc_douintvec_w(unsigned int *tbl_data, left -= proc_skip_spaces(&p); out_free: - kfree(kbuf); if (err) return -EINVAL; @@ -694,7 +672,7 @@ bail_early: return err; } -static int do_proc_douintvec_r(unsigned int *tbl_data, void __user *buffer, +static int do_proc_douintvec_r(unsigned int *tbl_data, void *buffer, size_t *lenp, loff_t *ppos, int (*conv)(unsigned long *lvalp, unsigned int *valp, @@ -712,11 +690,11 @@ static int do_proc_douintvec_r(unsigned int *tbl_data, void __user *buffer, goto out; } - err = proc_put_long(&buffer, &left, lval, false); - if (err || !left) + proc_put_long(&buffer, &left, lval, false); + if (!left) goto out; - err = proc_put_char(&buffer, &left, '\n'); + proc_put_char(&buffer, &left, '\n'); out: *lenp -= left; @@ -726,7 +704,7 @@ out: } static int __do_proc_douintvec(void *tbl_data, struct ctl_table *table, - int write, void __user *buffer, + int write, void *buffer, size_t *lenp, loff_t *ppos, int (*conv)(unsigned long *lvalp, unsigned int *valp, @@ -762,7 +740,7 @@ static int __do_proc_douintvec(void *tbl_data, struct ctl_table *table, } static int do_proc_douintvec(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos, + void *buffer, size_t *lenp, loff_t *ppos, int (*conv)(unsigned long *lvalp, unsigned int *valp, int write, void *data), @@ -785,16 +763,15 @@ static int do_proc_douintvec(struct ctl_table *table, int write, * * Returns 0 on success. */ -int proc_dointvec(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) +int proc_dointvec(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos) { return do_proc_dointvec(table, write, buffer, lenp, ppos, NULL, NULL); } #ifdef CONFIG_COMPACTION static int proc_dointvec_minmax_warn_RT_change(struct ctl_table *table, - int write, void __user *buffer, - size_t *lenp, loff_t *ppos) + int write, void *buffer, size_t *lenp, loff_t *ppos) { int ret, old; @@ -826,8 +803,8 @@ static int proc_dointvec_minmax_warn_RT_change(struct ctl_table *table, * * Returns 0 on success. */ -int proc_douintvec(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) +int proc_douintvec(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos) { return do_proc_douintvec(table, write, buffer, lenp, ppos, do_proc_douintvec_conv, NULL); @@ -838,7 +815,7 @@ int proc_douintvec(struct ctl_table *table, int write, * This means we can safely use a temporary. */ static int proc_taint(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table t; unsigned long tmptaint = get_taint(); @@ -870,7 +847,7 @@ static int proc_taint(struct ctl_table *table, int write, #ifdef CONFIG_PRINTK static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { if (write && !capable(CAP_SYS_ADMIN)) return -EPERM; @@ -936,7 +913,7 @@ static int do_proc_dointvec_minmax_conv(bool *negp, unsigned long *lvalp, * Returns 0 on success or -EINVAL on write when the range check fails. */ int proc_dointvec_minmax(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct do_proc_dointvec_minmax_conv_param param = { .min = (int *) table->extra1, @@ -1005,7 +982,7 @@ static int do_proc_douintvec_minmax_conv(unsigned long *lvalp, * Returns 0 on success or -ERANGE on write when the range check fails. */ int proc_douintvec_minmax(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct do_proc_douintvec_minmax_conv_param param = { .min = (unsigned int *) table->extra1, @@ -1036,7 +1013,7 @@ static int do_proc_dopipe_max_size_conv(unsigned long *lvalp, } static int proc_dopipe_max_size(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return do_proc_douintvec(table, write, buffer, lenp, ppos, do_proc_dopipe_max_size_conv, NULL); @@ -1057,7 +1034,7 @@ static void validate_coredump_safety(void) } static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int error = proc_dointvec_minmax(table, write, buffer, lenp, ppos); if (!error) @@ -1067,7 +1044,7 @@ static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write, #ifdef CONFIG_COREDUMP static int proc_dostring_coredump(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int error = proc_dostring(table, write, buffer, lenp, ppos); if (!error) @@ -1078,7 +1055,7 @@ static int proc_dostring_coredump(struct ctl_table *table, int write, #ifdef CONFIG_MAGIC_SYSRQ static int sysrq_sysctl_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int tmp, ret; @@ -1096,16 +1073,14 @@ static int sysrq_sysctl_handler(struct ctl_table *table, int write, } #endif -static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos, - unsigned long convmul, - unsigned long convdiv) +static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, + int write, void *buffer, size_t *lenp, loff_t *ppos, + unsigned long convmul, unsigned long convdiv) { unsigned long *i, *min, *max; int vleft, first = 1, err = 0; size_t left; - char *kbuf = NULL, *p; + char *p; if (!data || !table->maxlen || !*lenp || (*ppos && !write)) { *lenp = 0; @@ -1124,9 +1099,7 @@ static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int if (left > PAGE_SIZE - 1) left = PAGE_SIZE - 1; - p = kbuf = memdup_user_nul(buffer, left); - if (IS_ERR(kbuf)) - return PTR_ERR(kbuf); + p = buffer; } for (; left && vleft--; i++, first = 0) { @@ -1154,26 +1127,18 @@ static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int *i = val; } else { val = convdiv * (*i) / convmul; - if (!first) { - err = proc_put_char(&buffer, &left, '\t'); - if (err) - break; - } - err = proc_put_long(&buffer, &left, val, false); - if (err) - break; + if (!first) + proc_put_char(&buffer, &left, '\t'); + proc_put_long(&buffer, &left, val, false); } } if (!write && !first && left && !err) - err = proc_put_char(&buffer, &left, '\n'); + proc_put_char(&buffer, &left, '\n'); if (write && !err) left -= proc_skip_spaces(&p); - if (write) { - kfree(kbuf); - if (first) - return err ? : -EINVAL; - } + if (write && first) + return err ? : -EINVAL; *lenp -= left; out: *ppos += *lenp; @@ -1181,10 +1146,8 @@ out: } static int do_proc_doulongvec_minmax(struct ctl_table *table, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos, - unsigned long convmul, - unsigned long convdiv) + void *buffer, size_t *lenp, loff_t *ppos, unsigned long convmul, + unsigned long convdiv) { return __do_proc_doulongvec_minmax(table->data, table, write, buffer, lenp, ppos, convmul, convdiv); @@ -1207,7 +1170,7 @@ static int do_proc_doulongvec_minmax(struct ctl_table *table, int write, * Returns 0 on success. */ int proc_doulongvec_minmax(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return do_proc_doulongvec_minmax(table, write, buffer, lenp, ppos, 1l, 1l); } @@ -1230,8 +1193,7 @@ int proc_doulongvec_minmax(struct ctl_table *table, int write, * Returns 0 on success. */ int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return do_proc_doulongvec_minmax(table, write, buffer, lenp, ppos, HZ, 1000l); @@ -1325,7 +1287,7 @@ static int do_proc_dointvec_ms_jiffies_conv(bool *negp, unsigned long *lvalp, * Returns 0 on success. */ int proc_dointvec_jiffies(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return do_proc_dointvec(table,write,buffer,lenp,ppos, do_proc_dointvec_jiffies_conv,NULL); @@ -1347,7 +1309,7 @@ int proc_dointvec_jiffies(struct ctl_table *table, int write, * Returns 0 on success. */ int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return do_proc_dointvec(table,write,buffer,lenp,ppos, do_proc_dointvec_userhz_jiffies_conv,NULL); @@ -1369,15 +1331,15 @@ int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, * * Returns 0 on success. */ -int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) +int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos) { return do_proc_dointvec(table, write, buffer, lenp, ppos, do_proc_dointvec_ms_jiffies_conv, NULL); } -static int proc_do_cad_pid(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) +static int proc_do_cad_pid(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos) { struct pid *new_pid; pid_t tmp; @@ -1416,7 +1378,7 @@ static int proc_do_cad_pid(struct ctl_table *table, int write, * Returns 0 on success. */ int proc_do_large_bitmap(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int err = 0; bool first = 1; @@ -1432,7 +1394,7 @@ int proc_do_large_bitmap(struct ctl_table *table, int write, } if (write) { - char *kbuf, *p; + char *p = buffer; size_t skipped = 0; if (left > PAGE_SIZE - 1) { @@ -1441,15 +1403,9 @@ int proc_do_large_bitmap(struct ctl_table *table, int write, skipped = *lenp - left; } - p = kbuf = memdup_user_nul(buffer, left); - if (IS_ERR(kbuf)) - return PTR_ERR(kbuf); - tmp_bitmap = bitmap_zalloc(bitmap_len, GFP_KERNEL); - if (!tmp_bitmap) { - kfree(kbuf); + if (!tmp_bitmap) return -ENOMEM; - } proc_skip_char(&p, &left, '\n'); while (!err && left) { unsigned long val_a, val_b; @@ -1513,7 +1469,6 @@ int proc_do_large_bitmap(struct ctl_table *table, int write, first = 0; proc_skip_char(&p, &left, '\n'); } - kfree(kbuf); left += skipped; } else { unsigned long bit_a, bit_b = 0; @@ -1525,27 +1480,17 @@ int proc_do_large_bitmap(struct ctl_table *table, int write, bit_b = find_next_zero_bit(bitmap, bitmap_len, bit_a + 1) - 1; - if (!first) { - err = proc_put_char(&buffer, &left, ','); - if (err) - break; - } - err = proc_put_long(&buffer, &left, bit_a, false); - if (err) - break; + if (!first) + proc_put_char(&buffer, &left, ','); + proc_put_long(&buffer, &left, bit_a, false); if (bit_a != bit_b) { - err = proc_put_char(&buffer, &left, '-'); - if (err) - break; - err = proc_put_long(&buffer, &left, bit_b, false); - if (err) - break; + proc_put_char(&buffer, &left, '-'); + proc_put_long(&buffer, &left, bit_b, false); } first = 0; bit_b++; } - if (!err) - err = proc_put_char(&buffer, &left, '\n'); + proc_put_char(&buffer, &left, '\n'); } if (!err) { @@ -1566,68 +1511,67 @@ int proc_do_large_bitmap(struct ctl_table *table, int write, #else /* CONFIG_PROC_SYSCTL */ int proc_dostring(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_dointvec(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_douintvec(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_dointvec_minmax(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_douintvec_minmax(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_dointvec_jiffies(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_doulongvec_minmax(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { - return -ENOSYS; + return -ENOSYS; } int proc_do_large_bitmap(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } @@ -1636,8 +1580,7 @@ int proc_do_large_bitmap(struct ctl_table *table, int write, #if defined(CONFIG_SYSCTL) int proc_do_static_key(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct static_key *key = (struct static_key *)table->data; static DEFINE_MUTEX(static_key_mutex); diff --git a/kernel/time/timer.c b/kernel/time/timer.c index a5221abb4594..398e6eadb861 100644 --- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -249,8 +249,7 @@ void timers_update_nohz(void) } int timer_migration_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret; diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 8d2b98812625..167a74a15b1a 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2661,7 +2661,7 @@ static void output_printk(struct trace_event_buffer *fbuffer) } int tracepoint_printk_sysctl(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, + void *buffer, size_t *lenp, loff_t *ppos) { int save_tracepoint_printk; diff --git a/kernel/umh.c b/kernel/umh.c index 7f255b5a8845..9788ed481a6a 100644 --- a/kernel/umh.c +++ b/kernel/umh.c @@ -630,7 +630,7 @@ int call_usermodehelper(const char *path, char **argv, char **envp, int wait) EXPORT_SYMBOL(call_usermodehelper); static int proc_cap_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table t; unsigned long cap_array[_KERNEL_CAPABILITY_U32S]; diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c index 3732c888a949..4ca61d49885b 100644 --- a/kernel/utsname_sysctl.c +++ b/kernel/utsname_sysctl.c @@ -30,7 +30,7 @@ static void *get_uts(struct ctl_table *table) * to observe. Should this be in kernel/sys.c ???? */ static int proc_do_uts_string(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table uts_table; int r; diff --git a/kernel/watchdog.c b/kernel/watchdog.c index b6b1f54a7837..53ff2c81b084 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -661,7 +661,7 @@ static void proc_watchdog_update(void) * proc_soft_watchdog | soft_watchdog_user_enabled | SOFT_WATCHDOG_ENABLED */ static int proc_watchdog_common(int which, struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int err, old, *param = table->data; @@ -688,7 +688,7 @@ static int proc_watchdog_common(int which, struct ctl_table *table, int write, * /proc/sys/kernel/watchdog */ int proc_watchdog(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return proc_watchdog_common(NMI_WATCHDOG_ENABLED|SOFT_WATCHDOG_ENABLED, table, write, buffer, lenp, ppos); @@ -698,7 +698,7 @@ int proc_watchdog(struct ctl_table *table, int write, * /proc/sys/kernel/nmi_watchdog */ int proc_nmi_watchdog(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { if (!nmi_watchdog_available && write) return -ENOTSUPP; @@ -710,7 +710,7 @@ int proc_nmi_watchdog(struct ctl_table *table, int write, * /proc/sys/kernel/soft_watchdog */ int proc_soft_watchdog(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { return proc_watchdog_common(SOFT_WATCHDOG_ENABLED, table, write, buffer, lenp, ppos); @@ -720,7 +720,7 @@ int proc_soft_watchdog(struct ctl_table *table, int write, * /proc/sys/kernel/watchdog_thresh */ int proc_watchdog_thresh(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int err, old; @@ -743,7 +743,7 @@ int proc_watchdog_thresh(struct ctl_table *table, int write, * been brought online, if desired. */ int proc_watchdog_cpumask(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int err; diff --git a/mm/compaction.c b/mm/compaction.c index 46f0fcc93081..d8cfb7b99a83 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -2463,7 +2463,7 @@ int sysctl_compact_memory; * /proc/sys/vm/compact_memory */ int sysctl_compaction_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, loff_t *ppos) + void *buffer, size_t *length, loff_t *ppos) { if (write) compact_nodes(); diff --git a/mm/hugetlb.c b/mm/hugetlb.c index cd459155d28a..2277c5728b1f 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -3352,7 +3352,7 @@ static unsigned int cpuset_mems_nr(unsigned int *array) #ifdef CONFIG_SYSCTL static int hugetlb_sysctl_handler_common(bool obey_mempolicy, struct ctl_table *table, int write, - void __user *buffer, size_t *length, loff_t *ppos) + void *buffer, size_t *length, loff_t *ppos) { struct hstate *h = &default_hstate; unsigned long tmp = h->max_huge_pages; @@ -3375,7 +3375,7 @@ out: } int hugetlb_sysctl_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, loff_t *ppos) + void *buffer, size_t *length, loff_t *ppos) { return hugetlb_sysctl_handler_common(false, table, write, @@ -3384,7 +3384,7 @@ int hugetlb_sysctl_handler(struct ctl_table *table, int write, #ifdef CONFIG_NUMA int hugetlb_mempolicy_sysctl_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, loff_t *ppos) + void *buffer, size_t *length, loff_t *ppos) { return hugetlb_sysctl_handler_common(true, table, write, buffer, length, ppos); @@ -3392,8 +3392,7 @@ int hugetlb_mempolicy_sysctl_handler(struct ctl_table *table, int write, #endif /* CONFIG_NUMA */ int hugetlb_overcommit_handler(struct ctl_table *table, int write, - void __user *buffer, - size_t *length, loff_t *ppos) + void *buffer, size_t *length, loff_t *ppos) { struct hstate *h = &default_hstate; unsigned long tmp; diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 7326b54ab728..d3ee4c4dafac 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -512,8 +512,7 @@ bool node_dirty_ok(struct pglist_data *pgdat) } int dirty_background_ratio_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret; @@ -524,8 +523,7 @@ int dirty_background_ratio_handler(struct ctl_table *table, int write, } int dirty_background_bytes_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret; @@ -535,9 +533,8 @@ int dirty_background_bytes_handler(struct ctl_table *table, int write, return ret; } -int dirty_ratio_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) +int dirty_ratio_handler(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos) { int old_ratio = vm_dirty_ratio; int ret; @@ -551,8 +548,7 @@ int dirty_ratio_handler(struct ctl_table *table, int write, } int dirty_bytes_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { unsigned long old_bytes = vm_dirty_bytes; int ret; @@ -1972,7 +1968,7 @@ bool wb_over_bg_thresh(struct bdi_writeback *wb) * sysctl handler for /proc/sys/vm/dirty_writeback_centisecs */ int dirty_writeback_centisecs_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, loff_t *ppos) + void *buffer, size_t *length, loff_t *ppos) { unsigned int old_interval = dirty_writeback_interval; int ret; diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 62c1550cd43e..0c43e9ae5004 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5546,21 +5546,11 @@ char numa_zonelist_order[] = "Node"; * sysctl handler for numa_zonelist_order */ int numa_zonelist_order_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, - loff_t *ppos) + void *buffer, size_t *length, loff_t *ppos) { - char *str; - int ret; - - if (!write) - return proc_dostring(table, write, buffer, length, ppos); - str = memdup_user_nul(buffer, 16); - if (IS_ERR(str)) - return PTR_ERR(str); - - ret = __parse_numa_zonelist_order(str); - kfree(str); - return ret; + if (write) + return __parse_numa_zonelist_order(buffer); + return proc_dostring(table, write, buffer, length, ppos); } @@ -7963,7 +7953,7 @@ core_initcall(init_per_zone_wmark_min) * changes. */ int min_free_kbytes_sysctl_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, loff_t *ppos) + void *buffer, size_t *length, loff_t *ppos) { int rc; @@ -7979,7 +7969,7 @@ int min_free_kbytes_sysctl_handler(struct ctl_table *table, int write, } int watermark_scale_factor_sysctl_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, loff_t *ppos) + void *buffer, size_t *length, loff_t *ppos) { int rc; @@ -8009,7 +7999,7 @@ static void setup_min_unmapped_ratio(void) int sysctl_min_unmapped_ratio_sysctl_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, loff_t *ppos) + void *buffer, size_t *length, loff_t *ppos) { int rc; @@ -8036,7 +8026,7 @@ static void setup_min_slab_ratio(void) } int sysctl_min_slab_ratio_sysctl_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, loff_t *ppos) + void *buffer, size_t *length, loff_t *ppos) { int rc; @@ -8060,7 +8050,7 @@ int sysctl_min_slab_ratio_sysctl_handler(struct ctl_table *table, int write, * if in function of the boot time zone sizes. */ int lowmem_reserve_ratio_sysctl_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, loff_t *ppos) + void *buffer, size_t *length, loff_t *ppos) { proc_dointvec_minmax(table, write, buffer, length, ppos); setup_per_zone_lowmem_reserve(); @@ -8082,7 +8072,7 @@ static void __zone_pcp_update(struct zone *zone) * pagelist can have before it gets flushed back to buddy allocator. */ int percpu_pagelist_fraction_sysctl_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, loff_t *ppos) + void *buffer, size_t *length, loff_t *ppos) { struct zone *zone; int old_percpu_pagelist_fraction; diff --git a/mm/util.c b/mm/util.c index 988d11e6c17c..8defc8ec141f 100644 --- a/mm/util.c +++ b/mm/util.c @@ -717,9 +717,8 @@ int sysctl_max_map_count __read_mostly = DEFAULT_MAX_MAP_COUNT; unsigned long sysctl_user_reserve_kbytes __read_mostly = 1UL << 17; /* 128MB */ unsigned long sysctl_admin_reserve_kbytes __read_mostly = 1UL << 13; /* 8MB */ -int overcommit_ratio_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) +int overcommit_ratio_handler(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos) { int ret; @@ -729,9 +728,8 @@ int overcommit_ratio_handler(struct ctl_table *table, int write, return ret; } -int overcommit_kbytes_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) +int overcommit_kbytes_handler(struct ctl_table *table, int write, void *buffer, + size_t *lenp, loff_t *ppos) { int ret; diff --git a/mm/vmstat.c b/mm/vmstat.c index 96d21a792b57..c03a8c914922 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -76,7 +76,7 @@ static void invalid_numa_statistics(void) static DEFINE_MUTEX(vm_numa_stat_lock); int sysctl_vm_numa_stat_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, loff_t *ppos) + void *buffer, size_t *length, loff_t *ppos) { int ret, oldval; @@ -1751,7 +1751,7 @@ static void refresh_vm_stats(struct work_struct *work) } int vmstat_refresh(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { long val; int err; diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c index 59980ecfc962..04c3f9a82650 100644 --- a/net/bridge/br_netfilter_hooks.c +++ b/net/bridge/br_netfilter_hooks.c @@ -1027,7 +1027,7 @@ int br_nf_hook_thresh(unsigned int hook, struct net *net, #ifdef CONFIG_SYSCTL static int brnf_sysctl_call_tables(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret; diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 39d37d0ef575..3f2263e79e4b 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -3379,7 +3379,7 @@ EXPORT_SYMBOL(neigh_app_ns); static int unres_qlen_max = INT_MAX / SKB_TRUESIZE(ETH_FRAME_LEN); static int proc_unres_qlen(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int size, ret; struct ctl_table tmp = *ctl; @@ -3443,8 +3443,8 @@ static void neigh_proc_update(struct ctl_table *ctl, int write) } static int neigh_proc_dointvec_zero_intmax(struct ctl_table *ctl, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, + loff_t *ppos) { struct ctl_table tmp = *ctl; int ret; @@ -3457,8 +3457,8 @@ static int neigh_proc_dointvec_zero_intmax(struct ctl_table *ctl, int write, return ret; } -int neigh_proc_dointvec(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) +int neigh_proc_dointvec(struct ctl_table *ctl, int write, void *buffer, + size_t *lenp, loff_t *ppos) { int ret = proc_dointvec(ctl, write, buffer, lenp, ppos); @@ -3467,8 +3467,7 @@ int neigh_proc_dointvec(struct ctl_table *ctl, int write, } EXPORT_SYMBOL(neigh_proc_dointvec); -int neigh_proc_dointvec_jiffies(struct ctl_table *ctl, int write, - void __user *buffer, +int neigh_proc_dointvec_jiffies(struct ctl_table *ctl, int write, void *buffer, size_t *lenp, loff_t *ppos) { int ret = proc_dointvec_jiffies(ctl, write, buffer, lenp, ppos); @@ -3479,8 +3478,8 @@ int neigh_proc_dointvec_jiffies(struct ctl_table *ctl, int write, EXPORT_SYMBOL(neigh_proc_dointvec_jiffies); static int neigh_proc_dointvec_userhz_jiffies(struct ctl_table *ctl, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, + loff_t *ppos) { int ret = proc_dointvec_userhz_jiffies(ctl, write, buffer, lenp, ppos); @@ -3489,8 +3488,7 @@ static int neigh_proc_dointvec_userhz_jiffies(struct ctl_table *ctl, int write, } int neigh_proc_dointvec_ms_jiffies(struct ctl_table *ctl, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret = proc_dointvec_ms_jiffies(ctl, write, buffer, lenp, ppos); @@ -3500,8 +3498,8 @@ int neigh_proc_dointvec_ms_jiffies(struct ctl_table *ctl, int write, EXPORT_SYMBOL(neigh_proc_dointvec_ms_jiffies); static int neigh_proc_dointvec_unres_qlen(struct ctl_table *ctl, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, + loff_t *ppos) { int ret = proc_unres_qlen(ctl, write, buffer, lenp, ppos); @@ -3510,8 +3508,8 @@ static int neigh_proc_dointvec_unres_qlen(struct ctl_table *ctl, int write, } static int neigh_proc_base_reachable_time(struct ctl_table *ctl, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, + loff_t *ppos) { struct neigh_parms *p = ctl->extra2; int ret; diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c index 9f9e00ba3ad7..0ddb13a6282b 100644 --- a/net/core/sysctl_net_core.c +++ b/net/core/sysctl_net_core.c @@ -45,7 +45,7 @@ EXPORT_SYMBOL(sysctl_devconf_inherit_init_net); #ifdef CONFIG_RPS static int rps_sock_flow_sysctl(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { unsigned int orig_size, size; int ret, i; @@ -115,8 +115,7 @@ static int rps_sock_flow_sysctl(struct ctl_table *table, int write, static DEFINE_MUTEX(flow_limit_update_mutex); static int flow_limit_cpu_sysctl(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct sd_flow_limit *cur; struct softnet_data *sd; @@ -180,10 +179,7 @@ write_unlock: } if (len < *lenp) kbuf[len++] = '\n'; - if (copy_to_user(buffer, kbuf, len)) { - ret = -EFAULT; - goto done; - } + memcpy(buffer, kbuf, len); *lenp = len; *ppos += len; } @@ -194,8 +190,7 @@ done: } static int flow_limit_table_len_sysctl(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { unsigned int old, *ptr; int ret; @@ -217,7 +212,7 @@ static int flow_limit_table_len_sysctl(struct ctl_table *table, int write, #ifdef CONFIG_NET_SCHED static int set_default_qdisc(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { char id[IFNAMSIZ]; struct ctl_table tbl = { @@ -236,7 +231,7 @@ static int set_default_qdisc(struct ctl_table *table, int write, #endif static int proc_do_dev_weight(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret; @@ -251,7 +246,7 @@ static int proc_do_dev_weight(struct ctl_table *table, int write, } static int proc_do_rss_key(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table fake_table; char buf[NETDEV_RSS_KEY_LEN * 3]; @@ -264,7 +259,7 @@ static int proc_do_rss_key(struct ctl_table *table, int write, #ifdef CONFIG_BPF_JIT static int proc_dointvec_minmax_bpf_enable(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, + void *buffer, size_t *lenp, loff_t *ppos) { int ret, jit_enable = *(int *)table->data; @@ -291,8 +286,7 @@ static int proc_dointvec_minmax_bpf_enable(struct ctl_table *table, int write, # ifdef CONFIG_HAVE_EBPF_JIT static int proc_dointvec_minmax_bpf_restricted(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { if (!capable(CAP_SYS_ADMIN)) return -EPERM; @@ -303,8 +297,7 @@ proc_dointvec_minmax_bpf_restricted(struct ctl_table *table, int write, static int proc_dolongvec_minmax_bpf_restricted(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { if (!capable(CAP_SYS_ADMIN)) return -EPERM; diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c index cca7ae712995..65abcf1b3210 100644 --- a/net/decnet/dn_dev.c +++ b/net/decnet/dn_dev.c @@ -160,8 +160,8 @@ static int max_t3[] = { 8191 }; /* Must fit in 16 bits when multiplied by BCT3MU static int min_priority[1]; static int max_priority[] = { 127 }; /* From DECnet spec */ -static int dn_forwarding_proc(struct ctl_table *, int, - void __user *, size_t *, loff_t *); +static int dn_forwarding_proc(struct ctl_table *, int, void *, size_t *, + loff_t *); static struct dn_dev_sysctl_table { struct ctl_table_header *sysctl_header; struct ctl_table dn_dev_vars[5]; @@ -245,8 +245,7 @@ static void dn_dev_sysctl_unregister(struct dn_dev_parms *parms) } static int dn_forwarding_proc(struct ctl_table *table, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { #ifdef CONFIG_DECNET_ROUTER struct net_device *dev = table->extra1; diff --git a/net/decnet/sysctl_net_decnet.c b/net/decnet/sysctl_net_decnet.c index 55bf64a22b59..deae519bdeec 100644 --- a/net/decnet/sysctl_net_decnet.c +++ b/net/decnet/sysctl_net_decnet.c @@ -134,8 +134,7 @@ static int parse_addr(__le16 *addr, char *str) } static int dn_node_address_handler(struct ctl_table *table, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { char addr[DN_ASCBUF_LEN]; size_t len; @@ -148,10 +147,7 @@ static int dn_node_address_handler(struct ctl_table *table, int write, if (write) { len = (*lenp < DN_ASCBUF_LEN) ? *lenp : (DN_ASCBUF_LEN-1); - - if (copy_from_user(addr, buffer, len)) - return -EFAULT; - + memcpy(addr, buffer, len); addr[len] = 0; strip_it(addr); @@ -173,11 +169,9 @@ static int dn_node_address_handler(struct ctl_table *table, int write, len = strlen(addr); addr[len++] = '\n'; - if (len > *lenp) len = *lenp; - - if (copy_to_user(buffer, addr, len)) - return -EFAULT; - + if (len > *lenp) + len = *lenp; + memcpy(buffer, addr, len); *lenp = len; *ppos += len; @@ -185,8 +179,7 @@ static int dn_node_address_handler(struct ctl_table *table, int write, } static int dn_def_dev_handler(struct ctl_table *table, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { size_t len; struct net_device *dev; @@ -201,9 +194,7 @@ static int dn_def_dev_handler(struct ctl_table *table, int write, if (*lenp > 16) return -E2BIG; - if (copy_from_user(devname, buffer, *lenp)) - return -EFAULT; - + memcpy(devname, buffer, *lenp); devname[*lenp] = 0; strip_it(devname); @@ -238,9 +229,7 @@ static int dn_def_dev_handler(struct ctl_table *table, int write, if (len > *lenp) len = *lenp; - if (copy_to_user(buffer, devname, len)) - return -EFAULT; - + memcpy(buffer, devname, len); *lenp = len; *ppos += len; diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 30fa42f5997d..a118978d222c 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -2361,8 +2361,7 @@ static int devinet_conf_ifindex(struct net *net, struct ipv4_devconf *cnf) } static int devinet_conf_proc(struct ctl_table *ctl, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int old_value = *(int *)ctl->data; int ret = proc_dointvec(ctl, write, buffer, lenp, ppos); @@ -2414,8 +2413,7 @@ static int devinet_conf_proc(struct ctl_table *ctl, int write, } static int devinet_sysctl_forward(struct ctl_table *ctl, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int *valp = ctl->data; int val = *valp; @@ -2458,8 +2456,7 @@ static int devinet_sysctl_forward(struct ctl_table *ctl, int write, } static int ipv4_doint_and_flush(struct ctl_table *ctl, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int *valp = ctl->data; int val = *valp; diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 788c69d9bfe0..041f4dcac440 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -3336,8 +3336,7 @@ static int ip_rt_gc_elasticity __read_mostly = 8; static int ip_min_valid_pmtu __read_mostly = IPV4_MIN_MTU; static int ipv4_sysctl_rtcache_flush(struct ctl_table *__ctl, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct net *net = (struct net *)__ctl->extra1; diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index 81b267e990a1..868e317cc324 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -71,8 +71,7 @@ static void set_local_port_range(struct net *net, int range[2]) /* Validate changes from /proc interface. */ static int ipv4_local_port_range(struct ctl_table *table, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct net *net = container_of(table->data, struct net, ipv4.ip_local_ports.range); @@ -107,7 +106,7 @@ static int ipv4_local_port_range(struct ctl_table *table, int write, /* Validate changes from /proc interface. */ static int ipv4_privileged_ports(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct net *net = container_of(table->data, struct net, ipv4.sysctl_ip_prot_sock); @@ -168,8 +167,7 @@ static void set_ping_group_range(struct ctl_table *table, kgid_t low, kgid_t hig /* Validate changes from /proc interface. */ static int ipv4_ping_group_range(struct ctl_table *table, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct user_namespace *user_ns = current_user_ns(); int ret; @@ -204,8 +202,7 @@ static int ipv4_ping_group_range(struct ctl_table *table, int write, } static int ipv4_fwd_update_priority(struct ctl_table *table, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct net *net; int ret; @@ -221,7 +218,7 @@ static int ipv4_fwd_update_priority(struct ctl_table *table, int write, } static int proc_tcp_congestion_control(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct net *net = container_of(ctl->data, struct net, ipv4.tcp_congestion_control); @@ -241,9 +238,8 @@ static int proc_tcp_congestion_control(struct ctl_table *ctl, int write, } static int proc_tcp_available_congestion_control(struct ctl_table *ctl, - int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + int write, void *buffer, + size_t *lenp, loff_t *ppos) { struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, }; int ret; @@ -258,9 +254,8 @@ static int proc_tcp_available_congestion_control(struct ctl_table *ctl, } static int proc_allowed_congestion_control(struct ctl_table *ctl, - int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + int write, void *buffer, + size_t *lenp, loff_t *ppos) { struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX }; int ret; @@ -296,8 +291,7 @@ static int sscanf_key(char *buf, __le32 *key) } static int proc_tcp_fastopen_key(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct net *net = container_of(table->data, struct net, ipv4.sysctl_tcp_fastopen); @@ -399,7 +393,7 @@ static void proc_configure_early_demux(int enabled, int protocol) } static int proc_tcp_early_demux(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret = 0; @@ -415,7 +409,7 @@ static int proc_tcp_early_demux(struct ctl_table *table, int write, } static int proc_udp_early_demux(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret = 0; @@ -431,8 +425,7 @@ static int proc_udp_early_demux(struct ctl_table *table, int write, } static int proc_tfo_blackhole_detect_timeout(struct ctl_table *table, - int write, - void __user *buffer, + int write, void *buffer, size_t *lenp, loff_t *ppos) { struct net *net = container_of(table->data, struct net, @@ -447,8 +440,7 @@ static int proc_tfo_blackhole_detect_timeout(struct ctl_table *table, } static int proc_tcp_available_ulp(struct ctl_table *ctl, - int write, - void __user *buffer, size_t *lenp, + int write, void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table tbl = { .maxlen = TCP_ULP_BUF_MAX, }; @@ -466,7 +458,7 @@ static int proc_tcp_available_ulp(struct ctl_table *ctl, #ifdef CONFIG_IP_ROUTE_MULTIPATH static int proc_fib_multipath_hash_policy(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, + void *buffer, size_t *lenp, loff_t *ppos) { struct net *net = container_of(table->data, struct net, diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 24e319dfb510..9d0e89bccb90 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -6108,9 +6108,8 @@ static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp) #ifdef CONFIG_SYSCTL -static -int addrconf_sysctl_forward(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) +static int addrconf_sysctl_forward(struct ctl_table *ctl, int write, + void *buffer, size_t *lenp, loff_t *ppos) { int *valp = ctl->data; int val = *valp; @@ -6134,9 +6133,8 @@ int addrconf_sysctl_forward(struct ctl_table *ctl, int write, return ret; } -static -int addrconf_sysctl_mtu(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) +static int addrconf_sysctl_mtu(struct ctl_table *ctl, int write, + void *buffer, size_t *lenp, loff_t *ppos) { struct inet6_dev *idev = ctl->extra1; int min_mtu = IPV6_MIN_MTU; @@ -6206,9 +6204,8 @@ static int addrconf_disable_ipv6(struct ctl_table *table, int *p, int newf) return 0; } -static -int addrconf_sysctl_disable(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) +static int addrconf_sysctl_disable(struct ctl_table *ctl, int write, + void *buffer, size_t *lenp, loff_t *ppos) { int *valp = ctl->data; int val = *valp; @@ -6232,9 +6229,8 @@ int addrconf_sysctl_disable(struct ctl_table *ctl, int write, return ret; } -static -int addrconf_sysctl_proxy_ndp(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) +static int addrconf_sysctl_proxy_ndp(struct ctl_table *ctl, int write, + void *buffer, size_t *lenp, loff_t *ppos) { int *valp = ctl->data; int ret; @@ -6275,7 +6271,7 @@ int addrconf_sysctl_proxy_ndp(struct ctl_table *ctl, int write, } static int addrconf_sysctl_addr_gen_mode(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, + void *buffer, size_t *lenp, loff_t *ppos) { int ret = 0; @@ -6337,7 +6333,7 @@ out: } static int addrconf_sysctl_stable_secret(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, + void *buffer, size_t *lenp, loff_t *ppos) { int err; @@ -6404,8 +6400,7 @@ out: static int addrconf_sysctl_ignore_routes_with_linkdown(struct ctl_table *ctl, - int write, - void __user *buffer, + int write, void *buffer, size_t *lenp, loff_t *ppos) { @@ -6505,10 +6500,8 @@ int addrconf_disable_policy(struct ctl_table *ctl, int *valp, int val) return 0; } -static -int addrconf_sysctl_disable_policy(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) +static int addrconf_sysctl_disable_policy(struct ctl_table *ctl, int write, + void *buffer, size_t *lenp, loff_t *ppos) { int *valp = ctl->data; int val = *valp; diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index 1ecd4e9b0bdf..58f1255295d3 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1835,7 +1835,8 @@ static void ndisc_warn_deprecated_sysctl(struct ctl_table *ctl, } } -int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) +int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl, int write, void *buffer, + size_t *lenp, loff_t *ppos) { struct net_device *dev = ctl->extra1; struct inet6_dev *idev; diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 310cbddaa533..acdb31e38412 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -6088,9 +6088,8 @@ static int rt6_stats_seq_show(struct seq_file *seq, void *v) #ifdef CONFIG_SYSCTL -static -int ipv6_sysctl_rtcache_flush(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) +static int ipv6_sysctl_rtcache_flush(struct ctl_table *ctl, int write, + void *buffer, size_t *lenp, loff_t *ppos) { struct net *net; int delay; diff --git a/net/ipv6/sysctl_net_ipv6.c b/net/ipv6/sysctl_net_ipv6.c index 63b657aa8d29..fac2135aa47b 100644 --- a/net/ipv6/sysctl_net_ipv6.c +++ b/net/ipv6/sysctl_net_ipv6.c @@ -26,8 +26,7 @@ static int auto_flowlabels_min; static int auto_flowlabels_max = IP6_AUTO_FLOW_LABEL_MAX; static int proc_rt6_multipath_hash_policy(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct net *net; int ret; diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c index 4701edffb1f7..a42e4ed5ab0e 100644 --- a/net/mpls/af_mpls.c +++ b/net/mpls/af_mpls.c @@ -1362,8 +1362,7 @@ done: (&((struct mpls_dev *)0)->field) static int mpls_conf_proc(struct ctl_table *ctl, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int oval = *(int *)ctl->data; int ret = proc_dointvec(ctl, write, buffer, lenp, ppos); @@ -2594,7 +2593,7 @@ nolabels: } static int mpls_platform_labels(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct net *net = table->data; int platform_labels = net->mpls.platform_labels; diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index 8d14a1acbc37..412656c34f20 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -1736,7 +1736,7 @@ static int three = 3; static int proc_do_defense_mode(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct netns_ipvs *ipvs = table->extra2; int *valp = table->data; @@ -1763,7 +1763,7 @@ proc_do_defense_mode(struct ctl_table *table, int write, static int proc_do_sync_threshold(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int *valp = table->data; int val[2]; @@ -1788,7 +1788,7 @@ proc_do_sync_threshold(struct ctl_table *table, int write, static int proc_do_sync_ports(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int *valp = table->data; int val = *valp; diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c index 9b57330c81f8..31b027b12ff3 100644 --- a/net/netfilter/nf_conntrack_standalone.c +++ b/net/netfilter/nf_conntrack_standalone.c @@ -517,7 +517,7 @@ static unsigned int nf_conntrack_htable_size_user __read_mostly; static int nf_conntrack_hash_sysctl(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret; diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c index bb25d4c794c7..6cb9f9474b05 100644 --- a/net/netfilter/nf_log.c +++ b/net/netfilter/nf_log.c @@ -414,7 +414,7 @@ static struct ctl_table nf_log_sysctl_ftable[] = { }; static int nf_log_proc_dostring(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { const struct nf_logger *logger; char buf[NFLOGGER_NAME_LEN]; diff --git a/net/phonet/sysctl.c b/net/phonet/sysctl.c index 251e750fd9aa..0d0bf41381c2 100644 --- a/net/phonet/sysctl.c +++ b/net/phonet/sysctl.c @@ -49,8 +49,7 @@ void phonet_get_local_port_range(int *min, int *max) } static int proc_local_port_range(struct ctl_table *table, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret; int range[2] = {local_port_range[0], local_port_range[1]}; diff --git a/net/rds/tcp.c b/net/rds/tcp.c index 66121bc6f34e..46782fac4c16 100644 --- a/net/rds/tcp.c +++ b/net/rds/tcp.c @@ -62,8 +62,7 @@ static atomic_t rds_tcp_unloading = ATOMIC_INIT(0); static struct kmem_cache *rds_tcp_conn_slab; static int rds_tcp_skbuf_handler(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, - loff_t *fpos); + void *buffer, size_t *lenp, loff_t *fpos); static int rds_tcp_min_sndbuf = SOCK_MIN_SNDBUF; static int rds_tcp_min_rcvbuf = SOCK_MIN_RCVBUF; @@ -676,8 +675,7 @@ static void rds_tcp_sysctl_reset(struct net *net) } static int rds_tcp_skbuf_handler(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, - loff_t *fpos) + void *buffer, size_t *lenp, loff_t *fpos) { struct net *net = current->nsproxy->net_ns; int err; diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c index 4740aa70e652..c16c80963e55 100644 --- a/net/sctp/sysctl.c +++ b/net/sctp/sysctl.c @@ -43,20 +43,15 @@ static unsigned long max_autoclose_max = ? UINT_MAX : MAX_SCHEDULE_TIMEOUT / HZ; static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); + void *buffer, size_t *lenp, loff_t *ppos); static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); -static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); + void *buffer, size_t *lenp, loff_t *ppos); +static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write, void *buffer, + size_t *lenp, loff_t *ppos); static int proc_sctp_do_alpha_beta(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); + void *buffer, size_t *lenp, loff_t *ppos); static int proc_sctp_do_auth(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); + void *buffer, size_t *lenp, loff_t *ppos); static struct ctl_table sctp_table[] = { { @@ -343,8 +338,7 @@ static struct ctl_table sctp_net_table[] = { }; static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct net *net = current->nsproxy->net_ns; struct ctl_table tbl; @@ -389,8 +383,7 @@ static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write, } static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct net *net = current->nsproxy->net_ns; unsigned int min = *(unsigned int *) ctl->extra1; @@ -418,8 +411,7 @@ static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write, } static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct net *net = current->nsproxy->net_ns; unsigned int min = *(unsigned int *) ctl->extra1; @@ -447,8 +439,7 @@ static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write, } static int proc_sctp_do_alpha_beta(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { if (write) pr_warn_once("Changing rto_alpha or rto_beta may lead to " @@ -458,8 +449,7 @@ static int proc_sctp_do_alpha_beta(struct ctl_table *ctl, int write, } static int proc_sctp_do_auth(struct ctl_table *ctl, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct net *net = current->nsproxy->net_ns; struct ctl_table tbl; diff --git a/net/sunrpc/sysctl.c b/net/sunrpc/sysctl.c index d75f17b56f0e..999eee1ed61c 100644 --- a/net/sunrpc/sysctl.c +++ b/net/sunrpc/sysctl.c @@ -60,7 +60,7 @@ rpc_unregister_sysctl(void) } static int proc_do_xprt(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { char tmpbuf[256]; size_t len; @@ -70,15 +70,15 @@ static int proc_do_xprt(struct ctl_table *table, int write, return 0; } len = svc_print_xprts(tmpbuf, sizeof(tmpbuf)); - return simple_read_from_buffer(buffer, *lenp, ppos, tmpbuf, len); + return memory_read_from_buffer(buffer, *lenp, ppos, tmpbuf, len); } static int -proc_dodebug(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) +proc_dodebug(struct ctl_table *table, int write, void *buffer, size_t *lenp, + loff_t *ppos) { - char tmpbuf[20], c, *s = NULL; - char __user *p; + char tmpbuf[20], *s = NULL; + char *p; unsigned int value; size_t left, len; @@ -90,18 +90,17 @@ proc_dodebug(struct ctl_table *table, int write, left = *lenp; if (write) { - if (!access_ok(buffer, left)) - return -EFAULT; p = buffer; - while (left && __get_user(c, p) >= 0 && isspace(c)) - left--, p++; + while (left && isspace(*p)) { + left--; + p++; + } if (!left) goto done; if (left > sizeof(tmpbuf) - 1) return -EINVAL; - if (copy_from_user(tmpbuf, p, left)) - return -EFAULT; + memcpy(tmpbuf, p, left); tmpbuf[left] = '\0'; value = simple_strtol(tmpbuf, &s, 0); @@ -121,11 +120,9 @@ proc_dodebug(struct ctl_table *table, int write, len = sprintf(tmpbuf, "0x%04x", *(unsigned int *) table->data); if (len > left) len = left; - if (copy_to_user(buffer, tmpbuf, len)) - return -EFAULT; + memcpy(buffer, tmpbuf, len); if ((left -= len) > 0) { - if (put_user('\n', (char __user *)buffer + len)) - return -EFAULT; + *((char *)buffer + len) = '\n'; left--; } } diff --git a/net/sunrpc/xprtrdma/svc_rdma.c b/net/sunrpc/xprtrdma/svc_rdma.c index 97bca509a391..526da5d4710b 100644 --- a/net/sunrpc/xprtrdma/svc_rdma.c +++ b/net/sunrpc/xprtrdma/svc_rdma.c @@ -80,8 +80,7 @@ atomic_t rdma_stat_sq_prod; * current value. */ static int read_reset_stat(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { atomic_t *stat = (atomic_t *)table->data; @@ -103,8 +102,8 @@ static int read_reset_stat(struct ctl_table *table, int write, len -= *ppos; if (len > *lenp) len = *lenp; - if (len && copy_to_user(buffer, str_buf, len)) - return -EFAULT; + if (len) + memcpy(buffer, str_buf, len); *lenp = len; *ppos += len; } diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c index b621ad74f54a..27e371b44dad 100644 --- a/security/apparmor/lsm.c +++ b/security/apparmor/lsm.c @@ -1696,7 +1696,7 @@ static int __init alloc_buffers(void) #ifdef CONFIG_SYSCTL static int apparmor_dointvec(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { if (!policy_admin_capable(NULL)) return -EPERM; diff --git a/security/min_addr.c b/security/min_addr.c index 94d2b0cf0e7b..88c9a6a21f47 100644 --- a/security/min_addr.c +++ b/security/min_addr.c @@ -30,7 +30,7 @@ static void update_mmap_min_addr(void) * calls update_mmap_min_addr() so non MAP_FIXED hints get rounded properly */ int mmap_min_addr_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int ret; diff --git a/security/yama/yama_lsm.c b/security/yama/yama_lsm.c index 94dc346370b1..536c99646f6a 100644 --- a/security/yama/yama_lsm.c +++ b/security/yama/yama_lsm.c @@ -430,7 +430,7 @@ static struct security_hook_list yama_hooks[] __lsm_ro_after_init = { #ifdef CONFIG_SYSCTL static int yama_dointvec_minmax(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table table_copy; |