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Commit a9fcaaac authored by Steven Rostedt (Red Hat)'s avatar Steven Rostedt (Red Hat) Committed by Steven Rostedt
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tracing: Fix memory leak on instance deletion 



When an instance is created, it also gets a snapshot ring buffer
allocated (with minimum of pages). But when it is deleted the snapshot
buffer is not. There was a helper function added to match the allocation
of these ring buffers to a way to free them, but it wasn't used by
the deletion of an instance. Using that helper function solves this
memory leak.

Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 23aaa3c1

kernel/trace/trace.c

+1 −2
Original line number Original line Diff line number Diff line
@@ -6349,8 +6349,7 @@ static int instance_delete(const char *name) 
	event_trace_del_tracer(tr);

	event_trace_del_tracer(tr);

	ftrace_destroy_function_files(tr);

	ftrace_destroy_function_files(tr);

	debugfs_remove_recursive(tr->dir);

	debugfs_remove_recursive(tr->dir);

	free_percpu(tr->trace_buffer.data);

	free_trace_buffers(tr);

	ring_buffer_free(tr->trace_buffer.buffer);





	kfree(tr->name);

	kfree(tr->name);

	kfree(tr);

	kfree(tr);