From f75e18cb9627b1d3d752b83a0b5563da0042c50a Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Thu, 3 Mar 2011 14:25:50 +0800 Subject: [PATCH] perf cgroup: Fix unmatched call to perf_detach_cgroup() In the failure path, we call perf_detach_cgroup(), but we didn't call perf_get_cgroup() prio to it. Signed-off-by: Li Zefan Acked-by: Stephane Eranian Signed-off-by: Peter Zijlstra LKML-Reference: <4D6F346E.9070606@cn.fujitsu.com> Signed-off-by: Ingo Molnar --- kernel/perf_event.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/kernel/perf_event.c b/kernel/perf_event.c index 7c999e809ba3..b00209544d57 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -412,6 +412,9 @@ static inline int perf_cgroup_connect(int fd, struct perf_event *event, cgrp = container_of(css, struct perf_cgroup, css); event->cgrp = cgrp; + /* must be done before we fput() the file */ + perf_get_cgroup(event); + /* * all events in a group must monitor * the same cgroup because a task belongs @@ -420,9 +423,6 @@ static inline int perf_cgroup_connect(int fd, struct perf_event *event, if (group_leader && group_leader->cgrp != cgrp) { perf_detach_cgroup(event); ret = -EINVAL; - } else { - /* must be done before we fput() the file */ - perf_get_cgroup(event); } out: fput_light(file, fput_needed); -- GitLab