linux-kernel - [PATCH rdma-next 1/1] RDMA/core: Fix socket leak in rdma_dev_init

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Message-ID: <20250812133743.1788579-1-haakon.bugge@oracle.com>
Date: Tue, 12 Aug 2025 15:37:38 +0200
From: Håkon Bugge <haakon.bugge@...cle.com>
To: Jason Gunthorpe <jgg@...pe.ca>, Leon Romanovsky <leon@...nel.org>,
        Chiara Meiohas <cmeiohas@...dia.com>,
        Michael Guralnik <michaelgur@...dia.com>,
        Mark Bloch <mbloch@...dia.com>, Yuyu Li <liyuyu6@...wei.com>,
        Patrisious Haddad <phaddad@...dia.com>,
        Zhu Yanjun <yanjun.zhu@...ux.dev>, Yishai Hadas <yishaih@...dia.com>,
        Parav Pandit <parav@...dia.com>,
        "Dr. David Alan Gilbert" <linux@...blig.org>,
        Wang Liang <wangliang74@...wei.com>
Cc: stable@...r.kernel.org,
        Håkon Bugge <haakon.bugge@...cle.com>,
        Junxian Huang <huangjunxian6@...ilicon.com>,
        linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH rdma-next 1/1] RDMA/core: Fix socket leak in rdma_dev_init_net

If rdma_dev_init_net() has an early return because the supplied net is
the default init_net, we need to call rdma_nl_net_exit() before
returning.

Fixes: 4e0f7b907072 ("RDMA/core: Implement compat device/sysfs tree in net namespace")
Cc: stable@...r.kernel.org
Signed-off-by: Håkon Bugge <haakon.bugge@...cle.com>
---
 drivers/infiniband/core/device.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index 3145cb34a1d20..ec5642e70c5db 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -1203,8 +1203,10 @@ static __net_init int rdma_dev_init_net(struct net *net)
 		return ret;
 
 	/* No need to create any compat devices in default init_net. */
-	if (net_eq(net, &init_net))
+	if (net_eq(net, &init_net)) {
+		rdma_nl_net_exit(rnet);
 		return 0;
+	}
 
 	ret = xa_alloc(&rdma_nets, &rnet->id, rnet, xa_limit_32b, GFP_KERNEL);
 	if (ret) {
-- 
2.43.5