From b6dac2c198d593bd7bc08ece114f811b5979e363 Mon Sep 17 00:00:00 2001
From: Pan Bian <bianpan2016@163.com>
Date: Thu, 21 Jan 2021 07:37:45 -0800
Subject: [PATCH] NFC: fix possible resource leak
commit d8f923c3ab96dbbb4e3c22d1afc1dc1d3b195cd8 upstream.
Put the device to avoid resource leak on path that the polling flag is
invalid.
Fixes: a831b9132065 ("NFC: Do not return EBUSY when stopping a poll that's already stopped")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Link: https://lore.kernel.org/r/20210121153745.122184-1-bianpan2016@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/nfc/netlink.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index 639e5cad0442c..c90dc2fd13a7c 100644
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -850,6 +850,7 @@ static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info)
if (!dev->polling) {
device_unlock(&dev->dev);
+ nfc_put_device(dev);
return -EINVAL;
}
--
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