diff options
| author |   Li Zefan <lizf@cn.fujitsu.com> | 2009-05-06 10:33:04 +0800 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-05-06 10:38:19 +0200 |
| commit | 2df75e415709ad12862028916c772c1f377f6a7c (patch) | |
| tree | 3374a78cb06fe096e82d9e4d03ad03d048784967 /kernel/trace/trace_events_filter.c | |
| parent | tracing/events: make SAMPLE_TRACE_EVENTS default to n (diff) | |
| download | linux-dev-2df75e415709ad12862028916c772c1f377f6a7c.tar.xz linux-dev-2df75e415709ad12862028916c772c1f377f6a7c.zip | |
tracing/events: fix memory leak when unloading module
When unloading a module, memory allocated by init_preds() and
trace_define_field() is not freed.
[ Impact: fix memory leak ]
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <4A00F6E0.3040503@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to '')
| -rw-r--r-- | kernel/trace/trace_events_filter.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index f49486687ee2..ce07b8186710 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -346,6 +346,20 @@ static void filter_disable_preds(struct ftrace_event_call *call) filter->preds[i]->fn = filter_pred_none; } +void destroy_preds(struct ftrace_event_call *call) +{ + struct event_filter *filter = call->filter; + int i; + + for (i = 0; i < MAX_FILTER_PRED; i++) { + if (filter->preds[i]) + filter_free_pred(filter->preds[i]); + } + kfree(filter->preds); + kfree(filter); + call->filter = NULL; +} + int init_preds(struct ftrace_event_call *call) { struct event_filter *filter; @@ -374,13 +388,7 @@ int init_preds(struct ftrace_event_call *call) return 0; oom: - for (i = 0; i < MAX_FILTER_PRED; i++) { - if (filter->preds[i]) - filter_free_pred(filter->preds[i]); - } - kfree(filter->preds); - kfree(call->filter); - call->filter = NULL; + destroy_preds(call); return -ENOMEM; } |