ftrace: Add warning if tramp hash does not match nr_trampolines
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 <rostedt@goodmis.org>
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 6ef1989..979bd8c 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2226,6 +2226,9 @@
}
} 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;
}
