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hci_conn_params_add() never checks for a NULL value and could lead to a NULL
pointer dereference causing a crash.
Fixed by adding error handling in the function.
Cc: Stable <stable@kernel.org>
Fixes: 5157b8a503 ("Bluetooth: Fix initializing conn_params in scan phase")
Signed-off-by: Griffin Kroah-Hartman <griffin@kroah.com>
Reported-by: Yiwei Zhang <zhan4630@purdue.edu>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>