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Subject[PATCH] ocfs2: properly clean task pointer before o2hb thread exits abnormally
Date
From: Rock Li <lihongweizz@inspur.com>

in case o2hb thread exits abnormally before stop o2cb service,
heartbeat_drop_group_item will try to stop a noexit thread cause
ret->hb_task was not clear properly.

Signed-off-by: Rock Li <lihongweizz@inspur.com>
---
fs/ocfs2/cluster/heartbeat.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index b13d344..9db448d 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -1258,6 +1258,8 @@ static int o2hb_thread(void *data)
/* Unpin node */
o2nm_undepend_this_node();

+ reg->hr_task = NULL;
+
mlog(ML_HEARTBEAT|ML_KTHREAD, "o2hb thread exiting\n");

return 0;
--
1.8.3.1
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