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Date:   Thu, 31 Dec 2020 09:43:31 -0800
From:   Xie He <>
To:     "David S. Miller" <>,
        Jakub Kicinski <>,,,,
        Martin Schiller <>
Cc:     Xie He <>
Subject: [PATCH net] net: lapb: Decrease the refcount of "struct lapb_cb" in lapb_device_event

In lapb_device_event, lapb_devtostruct is called to get a reference to
an object of "struct lapb_cb". lapb_devtostruct increases the refcount
of the object and returns a pointer to it. However, we didn't decrease
the refcount after we finished using the pointer. This patch fixes this

Fixes: a4989fa91110 ("net/lapb: support netdev events")
Cc: Martin Schiller <>
Signed-off-by: Xie He <>
 net/lapb/lapb_iface.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/lapb/lapb_iface.c b/net/lapb/lapb_iface.c
index 213ea7abc9ab..40961889e9c0 100644
--- a/net/lapb/lapb_iface.c
+++ b/net/lapb/lapb_iface.c
@@ -489,6 +489,7 @@ static int lapb_device_event(struct notifier_block *this, unsigned long event,
+	lapb_put(lapb);
 	return NOTIFY_DONE;

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