diff options
Diffstat (limited to 'runtime/task_finder.c')
| -rw-r--r-- | runtime/task_finder.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/runtime/task_finder.c b/runtime/task_finder.c index 8448f29c..e853cb2a 100644 --- a/runtime/task_finder.c +++ b/runtime/task_finder.c @@ -654,19 +654,21 @@ stap_start_task_finder(void) cb_tgt = list_entry(cb_node, struct stap_task_finder_target, callback_list); - if (cb_tgt == NULL || cb_tgt->callback == NULL) + if (cb_tgt == NULL) continue; // Call the callback. Assume that if // the thread is a thread group // leader, it is a process. - rc = cb_tgt->callback(tsk, 1, - (tsk->pid == tsk->tgid), - cb_tgt); - if (rc != 0) { - _stp_error("attach callback for %d failed: %d", - (int)tsk->pid, rc); - goto stf_err; + if (cb_tgt->callback != NULL) { + rc = cb_tgt->callback(tsk, 1, + (tsk->pid == tsk->tgid), + cb_tgt); + if (rc != 0) { + _stp_error("attach callback for %d failed: %d", + (int)tsk->pid, rc); + goto stf_err; + } } // Set up events we need for attached tasks. |