1 files changed, 121 insertions, 26 deletions

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index c5ef44ff850f..58be76017fd0 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -27,6 +27,7 @@
 #include <linux/security.h>
 #include <linux/ctype.h>
 #include <linux/utsname.h>
+#include <linux/kmemcheck.h>
 #include <linux/smp_lock.h>
 #include <linux/fs.h>
 #include <linux/init.h>
@@ -48,6 +49,9 @@
 #include <linux/acpi.h>
 #include <linux/reboot.h>
 #include <linux/ftrace.h>
+#include <linux/security.h>
+#include <linux/slow-work.h>
+#include <linux/perf_counter.h>
 
 #include <asm/uaccess.h>
 #include <asm/processor.h>
@@ -95,15 +99,15 @@ static int sixty = 60;
 static int neg_one = -1;
 #endif
 
-#if defined(CONFIG_MMU) && defined(CONFIG_FILE_LOCKING)
-static int two = 2;
-#endif
-
 static int zero;
-static int one = 1;
+static int __maybe_unused one = 1;
+static int __maybe_unused two = 2;
 static unsigned long one_ul = 1;
 static int one_hundred = 100;
 
+/* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */
+static unsigned long dirty_bytes_min = 2 * PAGE_SIZE;
+
 /* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */
 static int maxolduid = 65535;
 static int minolduid;
@@ -113,6 +117,7 @@ static int ngroups_max = NGROUPS_MAX;
 
 #ifdef CONFIG_MODULES
 extern char modprobe_path[];
+extern int modules_disabled;
 #endif
 #ifdef CONFIG_CHR_DEV_SG
 extern int sg_big_buff;
@@ -325,6 +330,17 @@ static struct ctl_table kern_table[] = {
                 .mode           = 0644,
                 .proc_handler   = &proc_dointvec,
         },
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "timer_migration",
+                .data           = &sysctl_timer_migration,
+                .maxlen         = sizeof(unsigned int),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec_minmax,
+                .strategy       = &sysctl_intvec,
+                .extra1         = &zero,
+                .extra2         = &one,
+        },
 #endif
         {
                 .ctl_name       = CTL_UNNUMBERED,
@@ -533,6 +549,17 @@ static struct ctl_table kern_table[] = {
                 .proc_handler   = &proc_dostring,
                 .strategy       = &sysctl_string,
         },
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "modules_disabled",
+                .data           = &modules_disabled,
+                .maxlen         = sizeof(int),
+                .mode           = 0644,
+                /* only handle a transition from default "0" to "1" */
+                .proc_handler   = &proc_dointvec_minmax,
+                .extra1         = &one,
+                .extra2         = &one,
+        },
 #endif
 #if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
         {
@@ -721,6 +748,14 @@ static struct ctl_table kern_table[] = {
                 .proc_handler   = &proc_dointvec,
         },
         {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "panic_on_io_nmi",
+                .data           = &panic_on_io_nmi,
+                .maxlen         = sizeof(int),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec,
+        },
+        {
                 .ctl_name       = KERN_BOOTLOADER_TYPE,
                 .procname       = "bootloader_type",
                 .data           = &bootloader_type,
@@ -730,6 +765,14 @@ static struct ctl_table kern_table[] = {
         },
         {
                 .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "bootloader_version",
+                .data           = &bootloader_version,
+                .maxlen         = sizeof (int),
+                .mode           = 0444,
+                .proc_handler   = &proc_dointvec,
+        },
+        {
+                .ctl_name       = CTL_UNNUMBERED,
                 .procname       = "kstack_depth_to_print",
                 .data           = &kstack_depth_to_print,
                 .maxlen         = sizeof(int),
@@ -815,6 +858,19 @@ static struct ctl_table kern_table[] = {
                 .extra1         = &neg_one,
                 .extra2         = &sixty,
         },
+#endif
+#ifdef CONFIG_DETECT_HUNG_TASK
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "hung_task_panic",
+                .data           = &sysctl_hung_task_panic,
+                .maxlen         = sizeof(int),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec_minmax,
+                .strategy       = &sysctl_intvec,
+                .extra1         = &zero,
+                .extra2         = &one,
+        },
         {
                 .ctl_name       = CTL_UNNUMBERED,
                 .procname       = "hung_task_check_count",
@@ -830,7 +886,7 @@ static struct ctl_table kern_table[] = {
                 .data           = &sysctl_hung_task_timeout_secs,
                 .maxlen         = sizeof(unsigned long),
                 .mode           = 0644,
-                .proc_handler   = &proc_doulongvec_minmax,
+                .proc_handler   = &proc_dohung_task_timeout_secs,
                 .strategy       = &sysctl_intvec,
         },
         {
@@ -890,16 +946,51 @@ static struct ctl_table kern_table[] = {
                 .proc_handler   = &proc_dointvec,
         },
 #endif
-#ifdef CONFIG_UNEVICTABLE_LRU
+#ifdef CONFIG_SLOW_WORK
         {
                 .ctl_name       = CTL_UNNUMBERED,
-                .procname       = "scan_unevictable_pages",
-                .data           = &scan_unevictable_pages,
-                .maxlen         = sizeof(scan_unevictable_pages),
+                .procname       = "slow-work",
+                .mode           = 0555,
+                .child          = slow_work_sysctls,
+        },
+#endif
+#ifdef CONFIG_PERF_COUNTERS
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "perf_counter_paranoid",
+                .data           = &sysctl_perf_counter_paranoid,
+                .maxlen         = sizeof(sysctl_perf_counter_paranoid),
                 .mode           = 0644,
-                .proc_handler   = &scan_unevictable_handler,
+                .proc_handler   = &proc_dointvec,
+        },
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "perf_counter_mlock_kb",
+                .data           = &sysctl_perf_counter_mlock,
+                .maxlen         = sizeof(sysctl_perf_counter_mlock),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec,
+        },
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "perf_counter_max_sample_rate",
+                .data           = &sysctl_perf_counter_sample_rate,
+                .maxlen         = sizeof(sysctl_perf_counter_sample_rate),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec,
+        },
+#endif
+#ifdef CONFIG_KMEMCHECK
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "kmemcheck",
+                .data           = &kmemcheck_enabled,
+                .maxlen         = sizeof(int),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec,
         },
 #endif
+
 /*
  * NOTE: do not add new entries to this table unless you have read
  * Documentation/sysctl/ctl_unnumbered.txt
@@ -996,7 +1087,7 @@ static struct ctl_table vm_table[] = {
                 .mode           = 0644,
                 .proc_handler   = &dirty_bytes_handler,
                 .strategy       = &sysctl_intvec,
-                .extra1         = &one_ul,
+                .extra1         = &dirty_bytes_min,
         },
         {
                 .procname       = "dirty_writeback_centisecs",
@@ -1010,7 +1101,7 @@ static struct ctl_table vm_table[] = {
                 .data           = &dirty_expire_interval,
                 .maxlen         = sizeof(dirty_expire_interval),
                 .mode           = 0644,
-                .proc_handler   = &proc_dointvec_userhz_jiffies,
+                .proc_handler   = &proc_dointvec,
         },
         {
                 .ctl_name       = VM_NR_PDFLUSH_THREADS,
@@ -1213,16 +1304,14 @@ static struct ctl_table vm_table[] = {
                 .strategy       = &sysctl_jiffies,
         },
 #endif
-#ifdef CONFIG_SECURITY
         {
                 .ctl_name       = CTL_UNNUMBERED,
                 .procname       = "mmap_min_addr",
-                .data           = &mmap_min_addr,
-                .maxlen         = sizeof(unsigned long),
+                .data           = &dac_mmap_min_addr,
+                .maxlen         = sizeof(unsigned long),
                 .mode           = 0644,
-                .proc_handler   = &proc_doulongvec_minmax,
+                .proc_handler   = &mmap_min_addr_handler,
         },
-#endif
 #ifdef CONFIG_NUMA
         {
                 .ctl_name       = CTL_UNNUMBERED,
@@ -1260,6 +1349,14 @@ static struct ctl_table vm_table[] = {
                 .extra2         = &one,
         },
 #endif
+        {
+                .ctl_name       = CTL_UNNUMBERED,
+                .procname       = "scan_unevictable_pages",
+                .data           = &scan_unevictable_pages,
+                .maxlen         = sizeof(scan_unevictable_pages),
+                .mode           = 0644,
+                .proc_handler   = &scan_unevictable_handler,
+        },
 /*
  * NOTE: do not add new entries to this table unless you have read
  * Documentation/sysctl/ctl_unnumbered.txt
@@ -1373,10 +1470,7 @@ static struct ctl_table fs_table[] = {
                 .data           = &lease_break_time,
                 .maxlen         = sizeof(int),
                 .mode           = 0644,
-                .proc_handler   = &proc_dointvec_minmax,
-                .strategy       = &sysctl_intvec,
-                .extra1         = &zero,
-                .extra2         = &two,
+                .proc_handler   = &proc_dointvec,
         },
 #endif
 #ifdef CONFIG_AIO
@@ -1417,7 +1511,10 @@ static struct ctl_table fs_table[] = {
                 .data           = &suid_dumpable,
                 .maxlen         = sizeof(int),
                 .mode           = 0644,
-                .proc_handler   = &proc_dointvec,
+                .proc_handler   = &proc_dointvec_minmax,
+                .strategy       = &sysctl_intvec,
+                .extra1         = &zero,
+                .extra2         = &two,
         },
 #if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE)
         {
@@ -2198,7 +2295,7 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
                   void *data)
 {
 #define TMPBUFLEN 21
-        int *i, vleft, first=1, neg, val;
+        int *i, vleft, first = 1, neg;
         unsigned long lval;
         size_t left, len;
         
@@ -2251,8 +2348,6 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
                         len = p-buf;
                         if ((len < left) && *p && !isspace(*p))
                                 break;
-                        if (neg)
-                                val = -val;
                         s += len;
                         left -= len;