Files
linux/include/linux
Steven Rostedt (Red Hat) 049fb9bd41 ftrace/module: Call clean up function when module init fails early
If the module init code fails after calling ftrace_module_init() and before
calling do_init_module(), we can suffer from a memory leak. This is because
ftrace_module_init() allocates pages to store the locations that ftrace
hooks are placed in the module text. If do_init_module() fails, it still
calls the MODULE_GOING notifiers which will tell ftrace to do a clean up of
the pages it allocated for the module. But if load_module() fails before
then, the pages allocated by ftrace_module_init() will never be freed.

Call ftrace_release_mod() on the module if load_module() fails before
getting to do_init_module().

Link: http://lkml.kernel.org/r/567CEA31.1070507@intel.com

Reported-by: "Qiu, PeiyangX" <peiyangx.qiu@intel.com>
Fixes: a949ae560a "ftrace/module: Hardcode ftrace_module_init() call into load_module()"
Cc: stable@vger.kernel.org # v2.6.38+
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-01-07 12:17:39 -05:00
..
2015-10-01 12:48:11 -07:00
2015-06-25 11:49:31 +03:00
2015-10-17 21:22:08 -07:00
2015-10-07 18:08:15 +01:00
2015-08-27 20:47:09 +01:00
2015-10-27 19:34:54 -07:00
2015-08-03 12:01:54 -04:00
2015-11-07 10:40:47 -07:00
2015-10-07 16:02:49 -07:00
2015-09-04 16:54:41 -07:00
2015-09-08 15:35:28 -07:00
2015-10-18 10:14:39 -07:00
2015-10-31 19:05:59 -04:00
2015-10-30 01:47:27 -04:00
2015-06-24 17:49:45 -07:00
2015-09-08 15:35:28 -07:00
2015-10-23 05:44:28 -07:00
2015-08-27 19:40:58 -04:00
2015-10-01 15:06:43 +02:00
2015-10-13 19:01:25 +02:00
2015-06-25 12:06:45 +02:00
2015-11-09 15:11:24 -08:00
2015-08-18 15:49:15 -07:00
2015-07-28 08:50:42 +01:00
2015-11-23 09:44:58 +01:00
2015-10-27 18:55:31 -07:00
2015-06-24 17:49:41 -07:00
2015-11-06 17:50:42 -08:00
2015-10-20 22:10:45 +08:00
2015-07-21 10:39:05 -07:00
2015-06-25 04:20:04 -04:00
2015-08-17 13:32:56 -05:00
2015-09-10 13:29:01 -07:00
2015-09-10 13:29:01 -07:00
2015-11-06 17:50:42 -08:00
2015-10-09 17:00:32 -04:00
2015-10-06 17:08:19 +02:00
2015-10-22 08:59:18 -07:00
2015-06-25 01:13:43 +02:00
2015-09-10 15:36:59 -04:00
2015-06-25 17:00:39 -07:00
2015-11-05 14:36:09 -05:00
2015-08-17 11:25:28 -07:00
2015-10-01 09:57:59 -07:00
2015-10-19 01:01:21 +02:00
2015-11-20 16:19:54 -08:00
2015-11-23 09:44:58 +01:00
2015-12-04 08:38:42 -07:00
2015-12-13 14:30:59 -08:00
2015-11-13 20:34:33 -05:00
2015-09-08 15:35:28 -07:00