Commit 9640388b authored Nov 02, 2012 by Steven Rostedt Committed by Steven Rostedt Jan 22, 2013

ftrace: Fix function tracing recursion self test



The function tracing recursion self test should not crash
the machine if the resursion test fails. If it detects that
the function tracing is recursing when it should not be, then
bail, don't go into an infinite recursive loop.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

parent 63503794

kernel/trace/trace_selftest.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -415,7 +415,8 @@ static void trace_selftest_test_recursion_func(unsigned long ip,
		* The ftrace infrastructure should provide the recursion
		* protection. If not, this will crash the kernel!
		*/
		trace_selftest_recursion_cnt++;
		if (trace_selftest_recursion_cnt++ > 10)
		return;
		DYN_FTRACE_TEST_NAME();
		}