From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 800673DD51C; Tue, 16 Jun 2026 19:06:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781636773; cv=none; b=jMUspuEocB3uhvhrH3yAs9wLCkSpDac/XHrIkG9rGnxJ8VCtqGjbHTNpsWCY3f/Z7N9qDlgiP+qPCAWD2WKaBoqS/2U0B4HAzp9AbUnHOcqjuDVKK9m1IuPARMbbm/VANlcA3A50LhZc+BWkIupELoAEd6GVAoMrdazLT6lVu1Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781636773; c=relaxed/simple; bh=x2EkrbdnC5AjLGo1lchO1smrrbSOXgNHuNxMoLBosdk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=c++LSrnY/6vw/3/aeauTiJs3VcFhyJ3Co1st4lzcCMnMTN609aIu6z6TgWW8tQKXAW/aWqJddJ0f2nFmwQZtIMo0llTB8Y2Q/3oigcoiqalgi6LqKD3TdaXmOolO81PiHBRso/5vyATgXa8B+vqotfSgFKrJ34FARRjsBqzAPtM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=zobC8bC5; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="zobC8bC5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 49DEA1F000E9; Tue, 16 Jun 2026 19:06:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1781636772; bh=9VbOwgRxOi/gVD395v4YCFmTr8aTn3Ulp0KLSPov4/A=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=zobC8bC50BK3L9r/vjb1xFLzxMr6pSOEJ++HK6dulPlIMiiD6n0GWKWROVcbZgtle tEfC3EClEDxIm2eRVD1bMFgilg6c/De2MvFAViBrXipkSBS9v7q8fCND3Rv/LzAdvh VZ+j7G3g9rA6bJOUUdK61htZUgPG4K+2L3KKlBN8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Luiz Augusto von Dentz , Sasha Levin Subject: [PATCH 5.10 285/342] Bluetooth: Init sk_peer_* on bt_sock_alloc Date: Tue, 16 Jun 2026 20:29:41 +0530 Message-ID: <20260616145101.685199363@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260616145048.348037099@linuxfoundation.org> References: <20260616145048.348037099@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Luiz Augusto von Dentz [ Upstream commit 464c702fb9374ff8f3f816f24fb7ac719dd20e1e ] This makes sure peer information is always available via sock when using bt_sock_alloc. Signed-off-by: Luiz Augusto von Dentz Stable-dep-of: e83f5e24da74 ("Bluetooth: serialize accept_q access") Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- net/bluetooth/af_bluetooth.c | 24 ++++++++++++++++++++++++ net/bluetooth/hidp/sock.c | 10 +--------- net/bluetooth/l2cap_sock.c | 19 ------------------- 3 files changed, 25 insertions(+), 28 deletions(-) --- a/net/bluetooth/af_bluetooth.c +++ b/net/bluetooth/af_bluetooth.c @@ -155,6 +155,14 @@ struct sock *bt_sock_alloc(struct net *n sk->sk_protocol = proto; sk->sk_state = BT_OPEN; + /* Init peer information so it can be properly monitored */ + if (!kern) { + spin_lock(&sk->sk_peer_lock); + sk->sk_peer_pid = get_pid(task_tgid(current)); + sk->sk_peer_cred = get_current_cred(); + spin_unlock(&sk->sk_peer_lock); + } + return sk; } EXPORT_SYMBOL(bt_sock_alloc); @@ -177,6 +185,9 @@ EXPORT_SYMBOL(bt_sock_unlink); void bt_accept_enqueue(struct sock *parent, struct sock *sk, bool bh) { + const struct cred *old_cred; + struct pid *old_pid; + BT_DBG("parent %p, sk %p", parent, sk); sock_hold(sk); @@ -189,6 +200,19 @@ void bt_accept_enqueue(struct sock *pare list_add_tail(&bt_sk(sk)->accept_q, &bt_sk(parent)->accept_q); bt_sk(sk)->parent = parent; + /* Copy credentials from parent since for incoming connections the + * socket is allocated by the kernel. + */ + spin_lock(&sk->sk_peer_lock); + old_pid = sk->sk_peer_pid; + old_cred = sk->sk_peer_cred; + sk->sk_peer_pid = get_pid(parent->sk_peer_pid); + sk->sk_peer_cred = get_cred(parent->sk_peer_cred); + spin_unlock(&sk->sk_peer_lock); + + put_pid(old_pid); + put_cred(old_cred); + if (bh) bh_unlock_sock(sk); else --- a/net/bluetooth/hidp/sock.c +++ b/net/bluetooth/hidp/sock.c @@ -255,21 +255,13 @@ static int hidp_sock_create(struct net * if (sock->type != SOCK_RAW) return -ESOCKTNOSUPPORT; - sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hidp_proto, kern); + sk = bt_sock_alloc(net, sock, &hidp_proto, protocol, GFP_ATOMIC, kern); if (!sk) return -ENOMEM; - sock_init_data(sock, sk); - sock->ops = &hidp_sock_ops; - sock->state = SS_UNCONNECTED; - sock_reset_flag(sk, SOCK_ZAPPED); - - sk->sk_protocol = protocol; - sk->sk_state = BT_OPEN; - bt_sock_link(&hidp_sk_list, sk); return 0; --- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -177,21 +177,6 @@ done: return err; } -static void l2cap_sock_init_pid(struct sock *sk) -{ - struct l2cap_chan *chan = l2cap_pi(sk)->chan; - - /* Only L2CAP_MODE_EXT_FLOWCTL ever need to access the PID in order to - * group the channels being requested. - */ - if (chan->mode != L2CAP_MODE_EXT_FLOWCTL) - return; - - spin_lock(&sk->sk_peer_lock); - sk->sk_peer_pid = get_pid(task_tgid(current)); - spin_unlock(&sk->sk_peer_lock); -} - static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) { @@ -267,8 +252,6 @@ static int l2cap_sock_connect(struct soc chan->mode != L2CAP_MODE_EXT_FLOWCTL) chan->mode = L2CAP_MODE_LE_FLOWCTL; - l2cap_sock_init_pid(sk); - err = l2cap_chan_connect(chan, la.l2_psm, __le16_to_cpu(la.l2_cid), &la.l2_bdaddr, la.l2_bdaddr_type); if (err) @@ -324,8 +307,6 @@ static int l2cap_sock_listen(struct sock goto done; } - l2cap_sock_init_pid(sk); - sk->sk_max_ack_backlog = backlog; sk->sk_ack_backlog = 0;