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platform_kernel-5.15
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tracing/filters: free filter_string in destroy_preds() 

filter->filter_string is not freed when unloading a module:

 # insmod trace-events-sample.ko
 # echo "bar < 100" > /mnt/tracing/events/sample/foo_bar/filter
 # rmmod trace-events-sample.ko

[ Impact: fix memory leak when unloading module ]

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4A375A30.9060802@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Li Zefan 2009-06-16 16:39:12 +08:00 committed by Steven Rostedt
parent fa7439531d
commit 57be88878e
1 changed files with 1 additions and 0 deletions
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1
kernel/trace/trace_events_filter.c
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@ -381,6 +381,7 @@ void destroy_preds(struct ftrace_event_call *call)
filter_free_pred(filter->preds[i]); filter_free_pred(filter->preds[i]);
} }
kfree(filter->preds); kfree(filter->preds);
kfree(filter->filter_string);
kfree(filter); kfree(filter);
call->filter = NULL; call->filter = NULL;
} }