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authorAlexander Z Lam <azl@google.com>2013-07-10 17:34:34 -0700
committerSteven Rostedt <rostedt@goodmis.org>2013-07-18 21:31:30 -0400
commit609e85a70bcd0eedf4ec60639dbcfb1ab011e054 (patch)
tree2d977d898d4c781198935482659dd0174e0b9218 /kernel
parenta232e270dcb55a70ad3241bc6fc160fd9b5c9e6c (diff)
downloadop-kernel-dev-609e85a70bcd0eedf4ec60639dbcfb1ab011e054.zip
op-kernel-dev-609e85a70bcd0eedf4ec60639dbcfb1ab011e054.tar.gz
tracing: Fix error handling to ensure instances can always be removed
Remove debugfs directories for tracing instances during creation if an error occurs causing the trace_array for that instance to not be added to ftrace_trace_arrays. If the directory continues to exist after the error, it cannot be removed because the respective trace_array is not in ftrace_trace_arrays. Link: http://lkml.kernel.org/r/1373502874-1706-2-git-send-email-azl@google.com Cc: stable@vger.kernel.org # 3.10 Cc: Vaibhav Nagarnaik <vnagarnaik@google.com> Cc: David Sharp <dhsharp@google.com> Cc: Alexander Z Lam <lambchop468@gmail.com> Signed-off-by: Alexander Z Lam <azl@google.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/trace.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 25b91af..7c3da7b 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -5973,8 +5973,10 @@ static int new_instance_create(const char *name)
goto out_free_tr;
ret = event_trace_add_tracer(tr->dir, tr);
- if (ret)
+ if (ret) {
+ debugfs_remove_recursive(tr->dir);
goto out_free_tr;
+ }
init_tracer_debugfs(tr, tr->dir);
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