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Date: Tue, 2 Feb 2021 14:39:09 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Pan Bian <bianpan2016@....com>,
Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH 4.14 28/30] NFC: fix possible resource leak
From: Pan Bian <bianpan2016@....com>
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@....com>
Link: https://lore.kernel.org/r/20210121153745.122184-1-bianpan2016@163.com
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
net/nfc/netlink.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -884,6 +884,7 @@ static int nfc_genl_stop_poll(struct sk_
if (!dev->polling) {
device_unlock(&dev->dev);
+ nfc_put_device(dev);
return -EINVAL;
}
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