Commit dc6f03f2 authored Jul 24, 2014 by Steven Rostedt (Red Hat) Committed by Steven Rostedt Jul 24, 2014

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>

parent 2a0343ba

kernel/trace/ftrace.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}