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Diffstat (limited to 'kernel/trace/trace_events.c')
-rw-r--r--kernel/trace/trace_events.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 64ec4d278ffb..576f4fa2af0d 100644
--- 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;