2 files changed, 15 insertions, 11 deletions

diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h
index 19c19a5eee29..f6c82de12541 100644
--- a/include/linux/ipc_namespace.h
+++ b/include/linux/ipc_namespace.h
@@ -34,9 +34,9 @@ struct ipc_namespace {
         int             sem_ctls[4];
         int             used_sems;
 
-        int             msg_ctlmax;
-        int             msg_ctlmnb;
-        int             msg_ctlmni;
+        unsigned int    msg_ctlmax;
+        unsigned int    msg_ctlmnb;
+        unsigned int    msg_ctlmni;
         atomic_t        msg_bytes;
         atomic_t        msg_hdrs;
         int             auto_msgmni;
diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c
index 130dfece27ac..b0e99deb6d05 100644
--- a/ipc/ipc_sysctl.c
+++ b/ipc/ipc_sysctl.c
@@ -62,7 +62,7 @@ static int proc_ipc_dointvec_minmax_orphans(ctl_table *table, int write,
         return err;
 }
 
-static int proc_ipc_callback_dointvec(ctl_table *table, int write,
+static int proc_ipc_callback_dointvec_minmax(ctl_table *table, int write,
         void __user *buffer, size_t *lenp, loff_t *ppos)
 {
         struct ctl_table ipc_table;
@@ -72,7 +72,7 @@ static int proc_ipc_callback_dointvec(ctl_table *table, int write,
         memcpy(&ipc_table, table, sizeof(ipc_table));
         ipc_table.data = get_ipc(table);
 
-        rc = proc_dointvec(&ipc_table, write, buffer, lenp, ppos);
+        rc = proc_dointvec_minmax(&ipc_table, write, buffer, lenp, ppos);
 
         if (write && !rc && lenp_bef == *lenp)
                 /*
@@ -152,15 +152,13 @@ static int proc_ipcauto_dointvec_minmax(ctl_table *table, int write,
 #define proc_ipc_dointvec          NULL
 #define proc_ipc_dointvec_minmax   NULL
 #define proc_ipc_dointvec_minmax_orphans   NULL
-#define proc_ipc_callback_dointvec NULL
+#define proc_ipc_callback_dointvec_minmax  NULL
 #define proc_ipcauto_dointvec_minmax NULL
 #endif
 
 static int zero;
 static int one = 1;
-#ifdef CONFIG_CHECKPOINT_RESTORE
 static int int_max = INT_MAX;
-#endif
 
 static struct ctl_table ipc_kern_table[] = {
         {
@@ -198,21 +196,27 @@ static struct ctl_table ipc_kern_table[] = {
                 .data           = &init_ipc_ns.msg_ctlmax,
                 .maxlen         = sizeof (init_ipc_ns.msg_ctlmax),
                 .mode           = 0644,
-                .proc_handler   = proc_ipc_dointvec,
+                .proc_handler   = proc_ipc_dointvec_minmax,
+                .extra1         = &zero,
+                .extra2         = &int_max,
         },
         {
                 .procname       = "msgmni",
                 .data           = &init_ipc_ns.msg_ctlmni,
                 .maxlen         = sizeof (init_ipc_ns.msg_ctlmni),
                 .mode           = 0644,
-                .proc_handler   = proc_ipc_callback_dointvec,
+                .proc_handler   = proc_ipc_callback_dointvec_minmax,
+                .extra1         = &zero,
+                .extra2         = &int_max,
         },
         {
                 .procname       =  "msgmnb",
                 .data           = &init_ipc_ns.msg_ctlmnb,
                 .maxlen         = sizeof (init_ipc_ns.msg_ctlmnb),
                 .mode           = 0644,
-                .proc_handler   = proc_ipc_dointvec,
+                .proc_handler   = proc_ipc_dointvec_minmax,
+                .extra1         = &zero,
+                .extra2         = &int_max,
         },
         {
                 .procname       = "sem",