From: Zhu Yanjun <yanjun.zhu@xxxxxxxxxx> Date: Mon, 3 Jun 2019 08:48:19 -0400 > When KASAN is enabled, after several rds connections are > created, then "rmmod rds_rdma" is run. The following will > appear. ... > This is rds connection memory leak. The root cause is: > When "rmmod rds_rdma" is run, rds_ib_remove_one will call > rds_ib_dev_shutdown to drop the rds connections. > rds_ib_dev_shutdown will call rds_conn_drop to drop rds > connections as below. > " > rds_conn_path_drop(&conn->c_path[0], false); > " > In the above, destroy is set to false. ... > In the above function, destroy is set to false. rds_destroy_pending > is called. This does not move rds connections to ib_nodev_conns. > So destroy is set to true to move rds connections to ib_nodev_conns. > In rds_ib_unregister_client, flush_workqueue is called to make rds_wq > finsh shutdown rds connections. The function rds_ib_destroy_nodev_conns > is called to shutdown rds connections finally. > Then rds_ib_recv_exit is called to destroy slab. ... > Suggested-by: Håkon Bugge <haakon.bugge@xxxxxxxxxx> > Signed-off-by: Zhu Yanjun <yanjun.zhu@xxxxxxxxxx> Applied.
