Merge branch 'linus' into tracing/core

[safe/jmp/linux-2.6] / kernel / trace / trace_events.c

diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index be9299a..789e14e 100644 (file)
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -503,6 +503,7 @@ event_filter_write(struct file *filp, const char __user *ubuf, size_t cnt,
 
        if (copy_from_user(&buf, ubuf, cnt))
                return -EFAULT;
+       buf[cnt] = '\0';
 
        pred = kzalloc(sizeof(*pred), GFP_KERNEL);
        if (!pred)
@@ -520,9 +521,10 @@ event_filter_write(struct file *filp, const char __user *ubuf, size_t cnt,
                return cnt;
        }
 
-       if (filter_add_pred(call, pred)) {
+       err = filter_add_pred(call, pred);
+       if (err < 0) {
                filter_free_pred(pred);
-               return -EINVAL;
+               return err;
        }
 
        *ppos += cnt;
@@ -569,6 +571,7 @@ subsystem_filter_write(struct file *filp, const char __user *ubuf, size_t cnt,
 
        if (copy_from_user(&buf, ubuf, cnt))
                return -EFAULT;
+       buf[cnt] = '\0';
 
        pred = kzalloc(sizeof(*pred), GFP_KERNEL);
        if (!pred)
@@ -586,10 +589,11 @@ subsystem_filter_write(struct file *filp, const char __user *ubuf, size_t cnt,
                return cnt;
        }
 
-       if (filter_add_subsystem_pred(system, pred)) {
+       err = filter_add_subsystem_pred(system, pred);
+       if (err < 0) {
                filter_free_subsystem_preds(system);
                filter_free_pred(pred);
-               return -EINVAL;
+               return err;
        }
 
        *ppos += cnt;