Currently passing an invalid event hook to trace-cmd record causes a
segmentation fault, e.g.
Invalid hook format 'foobar'
Segmentation fault
Fix this by checking the return value of tracecmd_create_event_hook().
Signed-off-by: Slavomir Kaslev <kaslevs@xxxxxxxxxx>
---
tracecmd/trace-record.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tracecmd/trace-record.c b/tracecmd/trace-record.c
index c65731f..0596b63 100644
--- a/tracecmd/trace-record.c
+++ b/tracecmd/trace-record.c
@@ -4632,6 +4632,8 @@ static void add_hook(struct buffer_instance *instance, const char *arg)
struct hook_list *hook;
hook = tracecmd_create_event_hook(arg);
+ if (!hook)
+ die("Failed to create event hook %s", arg);
hook->instance = instance;
hook->next = hooks;
--
2.20.1
|