From: "Steven Rostedt (Red Hat)" <rost...@goodmis.org>
After adding all the records to the tramp_hash, add a check that makes
sure that the number of records added matches the number of records
expected to match and do a WARN_ON and disable ftrace if they do
not match.
Signed-off-by: Steven Rostedt <rost...@goodmis.org>
---
kernel/trace/ftrace.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 6ef1989c2b2e..979bd8cb4349 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2226,6 +2226,9 @@ static int ftrace_save_ops_tramp_hash(struct ftrace_ops
*ops)
}
} while_for_each_ftrace_rec();
+ /* The number of recs in the hash must match nr_trampolines */
+ FTRACE_WARN_ON(ops->tramp_hash->count != ops->nr_trampolines);
+
return 0;
}
--
2.0.1
--
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