From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A2ED4126C18; Wed, 5 Feb 2025 13:49:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738763361; cv=none; b=a130jCs2cYwSkFz5JK+Y/rpcONRQz04dmMEPPJyLApHG3bWvzGhUS4uiBS3OlgPs7+pR3ax2Y8FpIoCI7W5KA2IsUtxVRmz34QxyX3zeWerZlL6MhKfHic6qeEGcELow4CBaB3HMMBnYEzPWOG0WT51eyJnaGkiXlHiVilZcjjE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738763361; c=relaxed/simple; bh=mzcxtbRKkr/BdnX6CBaIiIutP37aORfBoU4mg1U5ins=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=q4AbdaNVDn3yMc80efy2eGQ9WitOX+gG4YPXCE4YYUkc44gAiaBxsJuOsG9nxzshB6VFTzR1it6w+ZH7D/DrTJUzGgmODpzfsJX3lJ3cpwidCUFMGKlBUPBdxyrQ7OvMpBDWkXMbn8jKxZONImiRofqFbP+LaAwWP3bomBdhB98= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=O9FmObba; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="O9FmObba" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0E17EC4CED1; Wed, 5 Feb 2025 13:49:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1738763361; bh=mzcxtbRKkr/BdnX6CBaIiIutP37aORfBoU4mg1U5ins=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=O9FmObbanpJO3NNz7qK2JB8OlvntRzp4ubNNC+ZeUmM5BFp6wWTFwcP1EW38PJYl0 J5y21EpLqnasFi3uu/HHExzdC5dwdStv1nxN8sONgs0BdU5LWvRdB5a5BwquExibxO kh8A5tOhfngHPi7a2RurMqkfhN/7Hhs5hUJxlVf4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thadeu Lima de Souza Cascardo , Ping-Ke Shih , Sasha Levin Subject: [PATCH 6.6 051/393] wifi: rtlwifi: wait for firmware loading before releasing memory Date: Wed, 5 Feb 2025 14:39:30 +0100 Message-ID: <20250205134422.252867127@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250205134420.279368572@linuxfoundation.org> References: <20250205134420.279368572@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Thadeu Lima de Souza Cascardo [ Upstream commit b4b26642b31ef282df6ff7ea8531985edfdef12a ] At probe error path, the firmware loading work may have already been queued. In such a case, it will try to access memory allocated by the probe function, which is about to be released. In such paths, wait for the firmware worker to finish before releasing memory. Fixes: a7f7c15e945a ("rtlwifi: rtl8192cu: Free ieee80211_hw if probing fails") Signed-off-by: Thadeu Lima de Souza Cascardo Signed-off-by: Ping-Ke Shih Link: https://patch.msgid.link/20241107133322.855112-4-cascardo@igalia.com Signed-off-by: Sasha Levin --- drivers/net/wireless/realtek/rtlwifi/usb.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/realtek/rtlwifi/usb.c b/drivers/net/wireless/realtek/rtlwifi/usb.c index 427547de61678..e2948732a16cb 100644 --- a/drivers/net/wireless/realtek/rtlwifi/usb.c +++ b/drivers/net/wireless/realtek/rtlwifi/usb.c @@ -1054,13 +1054,15 @@ int rtl_usb_probe(struct usb_interface *intf, err = ieee80211_register_hw(hw); if (err) { pr_err("Can't register mac80211 hw.\n"); - goto error_out; + goto error_init_vars; } rtlpriv->mac80211.mac80211_registered = 1; set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status); return 0; +error_init_vars: + wait_for_completion(&rtlpriv->firmware_loading_complete); error_out: rtl_deinit_core(hw); error_out2: -- 2.39.5