Looks like this was missed when patching the source to clear the structures throughout, causing this one instance to clear the struct after the response id is assigned. This is in regard to Message ID <20200806181714.3216076-1-luiz.dentz@xxxxxxxxx>, subject: [PATCH 1/4] Bluetooth: A2MP: Fix not initializing all members I must apologize for not noticing this sooner, as I remember reading the articles linking to this patch several months ago. Either it slipped my mind, or I failed to notice it then. Apparently, nobody else noticed it, either, so I guess it's just not that obvious. --- net/bluetooth/a2mp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/bluetooth/a2mp.c b/net/bluetooth/a2mp.c index da7fd7c8c2dc0..7a1e0b785f459 100644 --- a/net/bluetooth/a2mp.c +++ b/net/bluetooth/a2mp.c @@ -381,10 +381,11 @@ static int a2mp_getampassoc_req(struct amp_mgr *mgr, struct sk_buff *skb, hdev = hci_dev_get(req->id); if (!hdev || hdev->amp_type == AMP_TYPE_BREDR || tmp) { struct a2mp_amp_assoc_rsp rsp; - rsp.id = req->id; memset(&rsp, 0, sizeof(rsp)); + rsp.id = req->id; + if (tmp) { rsp.status = A2MP_STATUS_COLLISION_OCCURED; amp_mgr_put(tmp);