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Subject[PATCH] tracing: fix event system memory leak
system->ref_count = system->nr_events + ref_count for opening "enable"
and "filter"

so when removing a module, it's wrong to drop ref_count only when nr_events
drops to 0.

Cc: stable <stable@kernel.org>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
---
kernel/trace/trace_events.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 581876f..281a60a 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -1252,8 +1252,8 @@ static void remove_subsystem_dir(const char *name)
if (!--system->nr_events) {
debugfs_remove_recursive(system->entry);
list_del(&system->list);
- __put_system(system);
}
+ __put_system(system);
break;
}
}
--
1.7.3.1

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