1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 74f5b580fe34..e36ae4b15726 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2501,11 +2501,11 @@ int proc_do_large_bitmap(struct ctl_table *table, int write,
         bool first = 1;
         size_t left = *lenp;
         unsigned long bitmap_len = table->maxlen;
-        unsigned long *bitmap = (unsigned long *) table->data;
+        unsigned long *bitmap = *(unsigned long **) table->data;
         unsigned long *tmp_bitmap = NULL;
         char tr_a[] = { '-', ',', '\n' }, tr_b[] = { ',', '\n', 0 }, c;
 
-        if (!bitmap_len || !left || (*ppos && !write)) {
+        if (!bitmap || !bitmap_len || !left || (*ppos && !write)) {
                 *lenp = 0;
                 return 0;
         }