1 files changed, 30 insertions, 4 deletions

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 8020fb273c4f..09e569f4792b 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -136,8 +136,10 @@ static int parse_table(int __user *, int, void __user *, size_t __user *,
 static int proc_do_uts_string(ctl_table *table, int write, struct file *filp,
                   void __user *buffer, size_t *lenp, loff_t *ppos);
 
+#ifdef CONFIG_PROC_SYSCTL
 static int proc_do_cad_pid(ctl_table *table, int write, struct file *filp,
                   void __user *buffer, size_t *lenp, loff_t *ppos);
+#endif
 
 static ctl_table root_table[];
 static struct ctl_table_header root_table_header =
@@ -542,6 +544,7 @@ static ctl_table kern_table[] = {
                 .proc_handler   = &proc_dointvec,
         },
 #endif
+#ifdef CONFIG_PROC_SYSCTL
         {
                 .ctl_name       = KERN_CADPID,
                 .procname       = "cad_pid",
@@ -550,6 +553,7 @@ static ctl_table kern_table[] = {
                 .mode           = 0600,
                 .proc_handler   = &proc_do_cad_pid,
         },
+#endif
         {
                 .ctl_name       = KERN_MAX_THREADS,
                 .procname       = "threads-max",
@@ -1311,7 +1315,9 @@ repeat:
                 return -ENOTDIR;
         if (get_user(n, name))
                 return -EFAULT;
-        for ( ; table->ctl_name; table++) {
+        for ( ; table->ctl_name || table->procname; table++) {
+                if (!table->ctl_name)
+                        continue;
                 if (n == table->ctl_name || table->ctl_name == CTL_ANY) {
                         int error;
                         if (table->child) {
@@ -1528,7 +1534,7 @@ static void register_proc_table(ctl_table * table, struct proc_dir_entry *root,
         int len;
         mode_t mode;
         
-        for (; table->ctl_name; table++) {
+        for (; table->ctl_name || table->procname; table++) {
                 /* Can't do anything without a proc name. */
                 if (!table->procname)
                         continue;
@@ -1575,7 +1581,7 @@ static void register_proc_table(ctl_table * table, struct proc_dir_entry *root,
 static void unregister_proc_table(ctl_table * table, struct proc_dir_entry *root)
 {
         struct proc_dir_entry *de;
-        for (; table->ctl_name; table++) {
+        for (; table->ctl_name || table->procname; table++) {
                 if (!(de = table->de))
                         continue;
                 if (de->mode & S_IFDIR) {
@@ -2676,13 +2682,33 @@ int sysctl_ms_jiffies(ctl_table *table, int __user *name, int nlen,
 asmlinkage long sys_sysctl(struct __sysctl_args __user *args)
 {
         static int msg_count;
+        struct __sysctl_args tmp;
+        int name[CTL_MAXNAME];
+        int i;
+
+        /* Read in the sysctl name for better debug message logging */
+        if (copy_from_user(&tmp, args, sizeof(tmp)))
+                return -EFAULT;
+        if (tmp.nlen <= 0 || tmp.nlen >= CTL_MAXNAME)
+                return -ENOTDIR;
+        for (i = 0; i < tmp.nlen; i++)
+                if (get_user(name[i], tmp.name + i))
+                        return -EFAULT;
+
+        /* Ignore accesses to kernel.version */
+        if ((tmp.nlen == 2) && (name[0] == CTL_KERN) && (name[1] == KERN_VERSION))
+                goto out;
 
         if (msg_count < 5) {
                 msg_count++;
                 printk(KERN_INFO
                         "warning: process `%s' used the removed sysctl "
-                        "system call\n", current->comm);
+                        "system call with ", current->comm);
+                for (i = 0; i < tmp.nlen; i++)
+                        printk("%d.", name[i]);
+                printk("\n");
         }
+out:
         return -ENOSYS;
 }