mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-13 14:14:37 +00:00
tracing: Check pid filtering when creating events
commit6cb206508b
upstream. When pid filtering is activated in an instance, all of the events trace files for that instance has the PID_FILTER flag set. This determines whether or not pid filtering needs to be done on the event, otherwise the event is executed as normal. If pid filtering is enabled when an event is created (via a dynamic event or modules), its flag is not updated to reflect the current state, and the events are not filtered properly. Cc: stable@vger.kernel.org Fixes:3fdaf80f4a
("tracing: Implement event pid filtering") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
4fd0ad08ee
commit
406f2d5fe3
1 changed files with 10 additions and 0 deletions
|
@ -2462,12 +2462,22 @@ static struct trace_event_file *
|
|||
trace_create_new_event(struct trace_event_call *call,
|
||||
struct trace_array *tr)
|
||||
{
|
||||
struct trace_pid_list *no_pid_list;
|
||||
struct trace_pid_list *pid_list;
|
||||
struct trace_event_file *file;
|
||||
|
||||
file = kmem_cache_alloc(file_cachep, GFP_TRACE);
|
||||
if (!file)
|
||||
return NULL;
|
||||
|
||||
pid_list = rcu_dereference_protected(tr->filtered_pids,
|
||||
lockdep_is_held(&event_mutex));
|
||||
no_pid_list = rcu_dereference_protected(tr->filtered_no_pids,
|
||||
lockdep_is_held(&event_mutex));
|
||||
|
||||
if (pid_list || no_pid_list)
|
||||
file->flags |= EVENT_FILE_FL_PID_FILTER;
|
||||
|
||||
file->event_call = call;
|
||||
file->tr = tr;
|
||||
atomic_set(&file->sm_ref, 0);
|
||||
|
|
Loading…
Reference in a new issue