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Date: Mon, 11 Nov 2019 19:28:20 +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>,
Johan Hovold <johan@...nel.org>,
"David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.4 06/43] nfc: netlink: fix double device reference drop
From: Pan Bian <bianpan2016@....com>
[ Upstream commit 025ec40b81d785a98f76b8bdb509ac10773b4f12 ]
The function nfc_put_device(dev) is called twice to drop the reference
to dev when there is no associated local llcp. Remove one of them to fix
the bug.
Fixes: 52feb444a903 ("NFC: Extend netlink interface for LTO, RW, and MIUX parameters support")
Fixes: d9b8d8e19b07 ("NFC: llcp: Service Name Lookup netlink interface")
Signed-off-by: Pan Bian <bianpan2016@....com>
Reviewed-by: Johan Hovold <johan@...nel.org>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
net/nfc/netlink.c | 2 --
1 file changed, 2 deletions(-)
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -1066,7 +1066,6 @@ static int nfc_genl_llc_set_params(struc
local = nfc_llcp_find_local(dev);
if (!local) {
- nfc_put_device(dev);
rc = -ENODEV;
goto exit;
}
@@ -1126,7 +1125,6 @@ static int nfc_genl_llc_sdreq(struct sk_
local = nfc_llcp_find_local(dev);
if (!local) {
- nfc_put_device(dev);
rc = -ENODEV;
goto exit;
}
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