1 files changed, 3 insertions, 1 deletions

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b12583047757..f948f20f09cb 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2253,6 +2253,8 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
                 if (write) {
                         left -= proc_skip_spaces(&kbuf);
 
+                        if (!left)
+                                break;
                         err = proc_get_long(&kbuf, &left, &lval, &neg,
                                              proc_wspace_sep,
                                              sizeof(proc_wspace_sep), NULL);
@@ -2279,7 +2281,7 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
 
         if (!write && !first && left && !err)
                 err = proc_put_char(&buffer, &left, '\n');
-        if (write && !err)
+        if (write && !err && left)
                 left -= proc_skip_spaces(&kbuf);
 free:
         if (write) {