From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Maor Gottlieb <maorg@mellanox.com>,
Leon Romanovsky <leonro@mellanox.com>,
Jason Gunthorpe <jgg@mellanox.com>,
Sasha Levin <sashal@kernel.org>,
linux-rdma@vger.kernel.org
Subject: [PATCH AUTOSEL 4.19 110/172] IB/cma: Fix ports memory leak in cma_configfs
Date: Wed, 17 Jun 2020 21:21:16 -0400 [thread overview]
Message-ID: <20200618012218.607130-110-sashal@kernel.org> (raw)
In-Reply-To: <20200618012218.607130-1-sashal@kernel.org>
From: Maor Gottlieb <maorg@mellanox.com>
[ Upstream commit 63a3345c2d42a9b29e1ce2d3a4043689b3995cea ]
The allocated ports structure in never freed. The free function should be
called by release_cma_ports_group, but the group is never released since
we don't remove its default group.
Remove default groups when device group is deleted.
Fixes: 045959db65c6 ("IB/cma: Add configfs for rdma_cm")
Link: https://lore.kernel.org/r/20200521072650.567908-1-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/core/cma_configfs.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/infiniband/core/cma_configfs.c b/drivers/infiniband/core/cma_configfs.c
index eee38b40be99..ce183d054785 100644
--- a/drivers/infiniband/core/cma_configfs.c
+++ b/drivers/infiniband/core/cma_configfs.c
@@ -319,8 +319,21 @@ static struct config_group *make_cma_dev(struct config_group *group,
return ERR_PTR(err);
}
+static void drop_cma_dev(struct config_group *cgroup, struct config_item *item)
+{
+ struct config_group *group =
+ container_of(item, struct config_group, cg_item);
+ struct cma_dev_group *cma_dev_group =
+ container_of(group, struct cma_dev_group, device_group);
+
+ configfs_remove_default_groups(&cma_dev_group->ports_group);
+ configfs_remove_default_groups(&cma_dev_group->device_group);
+ config_item_put(item);
+}
+
static struct configfs_group_operations cma_subsys_group_ops = {
.make_group = make_cma_dev,
+ .drop_item = drop_cma_dev,
};
static const struct config_item_type cma_subsys_type = {
--
2.25.1
next prev parent reply other threads:[~2020-06-18 1:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200618012218.607130-1-sashal@kernel.org>
2020-06-18 1:19 ` [PATCH AUTOSEL 4.19 004/172] RDMA/uverbs: Make the event_queue fds return POLLERR when disassociated Sasha Levin
2020-06-18 1:19 ` [PATCH AUTOSEL 4.19 029/172] RDMA/mlx5: Add init2init as a modify command Sasha Levin
2020-06-18 1:21 ` Sasha Levin [this message]
2020-06-18 1:21 ` [PATCH AUTOSEL 4.19 117/172] RDMA/iw_cxgb4: cleanup device debugfs entries on ULD remove Sasha Levin
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