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RDMA/rtrs-clt: Fix memory leak of not-freed sess->stats and stats->pcpu_stats

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[ Upstream commit 7ecd7e290bee0ab9cf75b79a367a4cc113cf8292 ]

sess->stats and sess->stats->pcpu_stats objects are freed
when sysfs entry is removed. If something wrong happens and
session is closed before sysfs entry is created,
sess->stats and sess->stats->pcpu_stats objects are not freed.

This patch adds freeing of them at three places:
1. When client uses wrong address and session creation fails.
2. When client fails to create a sysfs entry.
3. When client adds wrong address via sysfs add_path.

Fixes: 215378b838 ("RDMA/rtrs: client: sysfs interface functions")
Link: https://lore.kernel.org/r/20210528113018.52290-21-jinpu.wang@ionos.com
Signed-off-by: Gioh Kim <gi-oh.kim@ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Gioh Kim
2021-05-28 13:30:18 +02:00
committed by Greg Kroah-Hartman
parent 6569ae1deb
commit 6cbc167bc1
1 changed files with 6 additions and 0 deletions
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6
drivers/infiniband/ulp/rtrs/rtrs-clt.c
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@@ -2706,6 +2706,8 @@ struct rtrs_clt *rtrs_clt_open(struct rtrs_clt_ops *ops,
if (err) { if (err) {
list_del_rcu(&sess->s.entry); list_del_rcu(&sess->s.entry);
rtrs_clt_close_conns(sess, true); rtrs_clt_close_conns(sess, true);
free_percpu(sess->stats->pcpu_stats);
kfree(sess->stats);
free_sess(sess); free_sess(sess);
goto close_all_sess; goto close_all_sess;
} }
@@ -2714,6 +2716,8 @@ struct rtrs_clt *rtrs_clt_open(struct rtrs_clt_ops *ops,
if (err) { if (err) {
list_del_rcu(&sess->s.entry); list_del_rcu(&sess->s.entry);
rtrs_clt_close_conns(sess, true); rtrs_clt_close_conns(sess, true);
free_percpu(sess->stats->pcpu_stats);
kfree(sess->stats);
free_sess(sess); free_sess(sess);
goto close_all_sess; goto close_all_sess;
} }
@@ -2973,6 +2977,8 @@ int rtrs_clt_create_path_from_sysfs(struct rtrs_clt *clt,
close_sess: close_sess:
rtrs_clt_remove_path_from_arr(sess); rtrs_clt_remove_path_from_arr(sess);
rtrs_clt_close_conns(sess, true); rtrs_clt_close_conns(sess, true);
free_percpu(sess->stats->pcpu_stats);
kfree(sess->stats);
free_sess(sess); free_sess(sess);
return err; return err;