linux-kernel - Testing for netrom: fix memory leak in nr_add

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Message-Id: <20260117142632.180941-1-activprithvi@gmail.com>
Date: Sat, 17 Jan 2026 19:56:32 +0530
From: Prithvi Tambewagh <activprithvi@...il.com>
To: syzbot+3f2d46b6e62b8dd546d3@...kaller.appspotmail.com,
	davem@...emloft.net,
	edumazet@...gle.com,
	horms@...nel.org,
	kuba@...nel.org,
	pabeni@...hat.com
Cc: linux-hams@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	syzkaller-bugs@...glegroups.com,
	Prithvi Tambewagh <activprithvi@...il.com>
Subject: Testing for netrom: fix memory leak in nr_add_node

#syz test upstream ea1013c1539270e372fc99854bc6e4d94eaeff66

Signed-off-by: Prithvi Tambewagh <activprithvi@...il.com>
---
 net/netrom/nr_route.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/netrom/nr_route.c b/net/netrom/nr_route.c
index b94cb2ffbaf8..20da41888151 100644
--- a/net/netrom/nr_route.c
+++ b/net/netrom/nr_route.c
@@ -176,6 +176,7 @@ static int __must_check nr_add_node(ax25_address *nr, const char *mnemonic,
 		hlist_add_head(&nr_neigh->neigh_node, &nr_neigh_list);
 		nr_neigh_hold(nr_neigh);
 		spin_unlock_bh(&nr_neigh_list_lock);
+		nr_neigh_put(nr_neigh);
 	}
 
 	if (quality != 0 && ax25cmp(nr, ax25) == 0 && !nr_neigh->locked)

base-commit: ea1013c1539270e372fc99854bc6e4d94eaeff66
-- 
2.34.1