From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793210848; b=XXr1u0DYyMj8W4GcuWmQmUWhy+h/Zzj1uHQFw8Ph/G5e8xoNw4opifwiglG4QQOuV4M0 S+6UVKRrBlrfwo+t+drF5eX3mtUtoj0Ca/DFTR6nZ9y6UqxgjFcUc/J8wrjnVL0xwEJaS XpCqOD5tvtbpplyBnAc+HIx3jUHSG++mtILB3Okssz31/Hd4FYRV7gnCYXRVeLSJi+mDW zc10mVq3hrR2ku4ZkD2ywZzgIcy13Z/K1YHrx7Nexa/XcQX3wm4yUdmEXncNVsDTw4798 ooqvBhgCGASimhmJh2O5DYrnw9zFPWwXC9KDlWTuJxcturYUrxujUeJ2gS0V+BtKs2A== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793210848; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=Ezbr2I8ee8663XIS1SUEk1O+46m0w6mCYZDn12J4Gnc=; b=QbcAEPN/f3c50Ye1TyyWX2hNw8XgtqTbfw980pIPOQNRLsZTEzoFcHX/B0ybQ+S6thE0 upFF0S3VTKoYLYM9Dv/MINxDBjZ2IRl/vE0y3VUH0nzy/A31aMAWWX0Fq7zh+4bIeYQvI FR4P6kRQYVfY0aHKhTbnDUqZ1BHDIz4Av3rPHcQCSCZKXllAbiVuGCwmN3iMmL1hOyd5/ EzIxkUh85LUGCkDdfHzbYfAnQY2MBk0h+y6maJCYGNa0W69d3Q2Crwezsy+mLdbxXgqHp Hdak4hUNC8GByibk0iOZsZuY3sAQbk6w3ttDNRSmnQcR86el8UKGZxobKisdjPoL38Q== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=Ma7oMG9d; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6AB0C606A324; Wed, 28 Oct 2026 18:07:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=Ma7oMG9d Received: by smtp.kernel.org (Postfix) with ESMTPSA id BC51F1F01829; Wed, 28 Oct 2026 18:07:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793210848; bh=Ezbr2I8ee8663XIS1SUEk1O+46m0w6mCYZDn12J4Gnc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Ma7oMG9dqhnTy2rV0R7UhHjVf9Mbpl18ZuzvffAOmCNmchyDvkSQg/z4DGzi2qGWZ nmL090abIWqDLWqypylyNJlY32S3DWWB4JIWu/txRIT19quHGRYYdkfuU2Cca49Wge CtUk6EAJ10601zTP6UDoAjPArmbnYJktnrsci7OY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Nicolas Escande , Rameshkumar Sundaram , Baochen Qiang , Jeff Johnson , Sasha Levin Subject: [PATCH 5.15 168/571] wifi: ath11k: reset ar->num_stations on hardware start Date: Wed, 28 Oct 2026 17:55:15 +0100 Message-ID: <20261028170012.001256211@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261028170008.009143722@linuxfoundation.org> References: <20261028170008.009143722@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nicolas Escande [ Upstream commit 7e0ad05ebc72fffba2bdf2400400902d94ed7272 ] When (multiple) hw restart occurs, we end up in a situation where we cannot accept new stations / mesh peers. This seems to be the 'num_stations' in 'struct ath11k' that did not get reset properly in this case. In ath11k_mac_op_start(), it was indeed the only accounting var that did not get reset so let's clear it too. This avoids problems like those: [1248828.088023] WARNING: CPU: 0 PID: 12281 at net/mac80211/util.c:1682 ieee80211_reconfig_stations+0x98/0xc0 [1248828.088115] Call trace: [1248828.088116] ieee80211_reconfig_stations+0x98/0xc0 (P) [1248828.088119] ieee80211_reconfig+0x774/0x1438 [1248828.088123] ieee80211_restart_work+0x10c/0x178 [1248828.088127] process_one_work+0x178/0x3c0 [1248828.088130] worker_thread+0x280/0x440 [1248828.088133] kthread+0xe0/0xf8 [1248828.088137] ret_from_fork+0x10/0x20 [1248828.088141] ---[ end trace 0000000000000000 ]--- [1248836.686604] ath11k_pci 0000:04:00.0: refusing to associate station: too many connected already (128) [1248836.686609] ath11k_pci 0000:04:00.0: Failed to add station: xx:xx:xx:xx:xx:xx for VDEV: 1 Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.9.0.1-01977-QCAHKSWPL_SILICONZ-1 Fixes: d5c65159f289 ("ath11k: driver for Qualcomm IEEE 802.11ax devices") Signed-off-by: Nicolas Escande Reviewed-by: Rameshkumar Sundaram Reviewed-by: Baochen Qiang Link: https://patch.msgid.link/20260812-num-station-v3-1-871d20e043f6@gmail.com Signed-off-by: Jeff Johnson Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/ath11k/mac.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c index 81a8e1102d72b..a13252fd16b86 100644 --- a/drivers/net/wireless/ath/ath11k/mac.c +++ b/drivers/net/wireless/ath/ath11k/mac.c @@ -4500,6 +4500,7 @@ static int ath11k_mac_op_start(struct ieee80211_hw *hw) ar->num_started_vdevs = 0; ar->num_created_vdevs = 0; ar->num_peers = 0; + ar->num_stations = 0; ar->allocated_vdev_map = 0; /* Configure monitor status ring with default rx_filter to get rx status -- 2.53.0