From: Steven Rostedt (Red Hat) Date: Sat, 7 Jun 2014 03:17:28 +0000 (-0400) Subject: tracing: Fix memory leak on instance deletion X-Git-Tag: firefly_0821_release~176^2~3758^2~4 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a9fcaaac37b3baba1343f906f52aeb65c4d4e356;p=firefly-linux-kernel-4.4.55.git 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: Steven Rostedt --- diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 26cfff38e2ab..16f7038d1f4d 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -6349,8 +6349,7 @@ static int instance_delete(const char *name) event_trace_del_tracer(tr); ftrace_destroy_function_files(tr); debugfs_remove_recursive(tr->dir); - free_percpu(tr->trace_buffer.data); - ring_buffer_free(tr->trace_buffer.buffer); + free_trace_buffers(tr); kfree(tr->name); kfree(tr);