diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace_kprobe.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index a357d7e93934..f0ee722be520 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -349,7 +349,7 @@ static struct trace_kprobe *find_trace_kprobe(const char *event, static int enable_trace_kprobe(struct trace_kprobe *tk, struct trace_event_file *file) { - struct event_file_link *link; + struct event_file_link *link = NULL; int ret = 0; if (file) { @@ -375,7 +375,9 @@ enable_trace_kprobe(struct trace_kprobe *tk, struct trace_event_file *file) if (ret) { if (file) { - list_del_rcu(&link->list); + /* Notice the if is true on not WARN() */ + if (!WARN_ON_ONCE(!link)) + list_del_rcu(&link->list); kfree(link); tk->tp.flags &= ~TP_FLAG_TRACE; } else { |