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 8C96C30E0DC; Sat, 30 May 2026 17:57:08 +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=1780163829; cv=none; b=m3ZEBkPtAxSTIdTHNqvkxI316dQFgq6Cw/CYTD3X4wq7Kwdwb5KNRu4OJOczOy/U3s17FWr64z1224Kt3b+huZ+AdX5Uvt5zf5e7kq0RzKv8DI9FSXiITTPoE5j+BFVJvqH2nXXBtinVZEKwt7sXJ/GXiGbVI7RyyxyMZCivXyk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780163829; c=relaxed/simple; bh=ry410egQFfymrlBgEUNLMeBUcce3TiB+gCOUd7vE7I8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rRxlQLFauJ5kOouD4Ld0yMwwt4TFcMuHB61iuy+Rys1KiV/VH7obTdL5UfbZJpXfbmYE9kUvQ3vFaXfrFS24BgFjCNqlIDHSEEG+1O3o9BjWzhjTVpUZsvW8p9okjFcDzCrqWxWP63CWs7u2JujPNvSLvo+UsuhOobQSDpfUl60= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=wkVs0X7E; 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="wkVs0X7E" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D14E81F00893; Sat, 30 May 2026 17:57:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1780163828; bh=x9pwzOLq5j6VZbKWWB9W6KXwd81EWUTmzdztZHxb3a0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=wkVs0X7E9oydJvaaVmiHVgqWLmG5ClUGsp0uw14EdyuWRoJlcBhpWI/VLVA8N34mE BY3eDk4s5sOUYxgIXLONiV7ivfK3UpfeX03mxDuUHVuWVOtCqWSNxuavDgc+EYSWso xAi8s5IuNCcEbsbA0CPOT56oHcMNZOsRApHNcUoU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable@kernel.org, Yuan Tan , Yifan Wu , Juefei Pu , Xin Liu , Luxing Yin , Jiexun Wang , Ren Wei , Sven Eckelmann Subject: [PATCH 5.15 375/776] batman-adv: reject new tp_meter sessions during teardown Date: Sat, 30 May 2026 18:01:29 +0200 Message-ID: <20260530160250.224091183@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260530160240.228940103@linuxfoundation.org> References: <20260530160240.228940103@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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jiexun Wang commit 3243543592425beec83d453793e9d27caa0d8e66 upstream. Prevent tp_meter from starting new sender or receiver sessions after mesh_state has left BATADV_MESH_ACTIVE. Fixes: 33a3bb4a3345 ("batman-adv: throughput meter implementation") Cc: stable@kernel.org Reported-by: Yuan Tan Reported-by: Yifan Wu Reported-by: Juefei Pu Reported-by: Xin Liu Co-developed-by: Luxing Yin Signed-off-by: Luxing Yin Signed-off-by: Jiexun Wang Signed-off-by: Ren Wei Signed-off-by: Sven Eckelmann Signed-off-by: Greg Kroah-Hartman --- net/batman-adv/tp_meter.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) --- a/net/batman-adv/tp_meter.c +++ b/net/batman-adv/tp_meter.c @@ -947,6 +947,13 @@ void batadv_tp_start(struct batadv_priv /* look for an already existing test towards this node */ spin_lock_bh(&bat_priv->tp_list_lock); + if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) { + spin_unlock_bh(&bat_priv->tp_list_lock); + batadv_tp_batctl_error_notify(BATADV_TP_REASON_DST_UNREACHABLE, + dst, bat_priv, session_cookie); + return; + } + tp_vars = batadv_tp_list_find(bat_priv, dst); if (tp_vars) { spin_unlock_bh(&bat_priv->tp_list_lock); @@ -1329,9 +1336,12 @@ static struct batadv_tp_vars * batadv_tp_init_recv(struct batadv_priv *bat_priv, const struct batadv_icmp_tp_packet *icmp) { - struct batadv_tp_vars *tp_vars; + struct batadv_tp_vars *tp_vars = NULL; spin_lock_bh(&bat_priv->tp_list_lock); + if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) + goto out_unlock; + tp_vars = batadv_tp_list_find_session(bat_priv, icmp->orig, icmp->session); if (tp_vars) @@ -1464,6 +1474,9 @@ void batadv_tp_meter_recv(struct batadv_ { struct batadv_icmp_tp_packet *icmp; + if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) + goto out; + icmp = (struct batadv_icmp_tp_packet *)skb->data; switch (icmp->subtype) { @@ -1478,6 +1491,8 @@ void batadv_tp_meter_recv(struct batadv_ "Received unknown TP Metric packet type %u\n", icmp->subtype); } + +out: consume_skb(skb); }