diff options
Diffstat (limited to 'kernel/trace/trace_event_perf.c')
| -rw-r--r-- | kernel/trace/trace_event_perf.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/trace/trace_event_perf.c b/kernel/trace/trace_event_perf.c index 2c416509b834..c79193e598f5 100644 --- a/kernel/trace/trace_event_perf.c +++ b/kernel/trace/trace_event_perf.c @@ -252,6 +252,8 @@ int perf_kprobe_init(struct perf_event *p_event, bool is_retprobe) ret = strncpy_from_user( func, u64_to_user_ptr(p_event->attr.kprobe_func), KSYM_NAME_LEN); + if (ret == KSYM_NAME_LEN) + ret = -E2BIG; if (ret < 0) goto out; @@ -300,6 +302,8 @@ int perf_uprobe_init(struct perf_event *p_event, bool is_retprobe) return -ENOMEM; ret = strncpy_from_user( path, u64_to_user_ptr(p_event->attr.uprobe_path), PATH_MAX); + if (ret == PATH_MAX) + return -E2BIG; if (ret < 0) goto out; if (path[0] == '\0') { |