From: Pan Bian bianpan2016@163.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@163.com Reviewed-by: Johan Hovold johan@kernel.org Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/nfc/netlink.c | 2 -- 1 file changed, 2 deletions(-)
--- a/net/nfc/netlink.c +++ b/net/nfc/netlink.c @@ -1100,7 +1100,6 @@ static int nfc_genl_llc_set_params(struc
local = nfc_llcp_find_local(dev); if (!local) { - nfc_put_device(dev); rc = -ENODEV; goto exit; } @@ -1160,7 +1159,6 @@ static int nfc_genl_llc_sdreq(struct sk_
local = nfc_llcp_find_local(dev); if (!local) { - nfc_put_device(dev); rc = -ENODEV; goto exit; }