perf_counter: Fix buffer overflow in perf_copy_attr()

[karo-tx-linux.git] / kernel / perf_counter.c

diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index d7cbc579fc8016603f0d0644c339a470224ad0b9..a67a1dc3cfa3858c0ca969d1feea2f5605fb331b 100644 (file)
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -4171,6 +4171,7 @@ static int perf_copy_attr(struct perf_counter_attr __user *uattr,
                        if (val)
                                goto err_size;
                }
+               size = sizeof(*attr);
        }
 
        ret = copy_from_user(attr, uattr, size);