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 3C8953FE2D; Mon, 1 Apr 2024 15:54:52 +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=1711986892; cv=none; b=et6+Caef3xp6Uzoai/r33ccglrH+ZUlGjo4B5zNF21f4K5MDbmwkCTWM+lFUbG18mraMqCYnVilrqeadvVzPYScLQvv2iZS0EqYsk/T3v+bKEphmnqaNnEDKa3cQtLLTf4uAuAkiAGjTe0erzPKKdjM7CyzMvHdCkyEVvLzLuvk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711986892; c=relaxed/simple; bh=7E8P2GrsGd4ve7bPe+/OV5MUJ9O+RdGd9PG38IPKc+I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HxFMKdmdLfNtzGksnYILtcF9icvNYoJIcQ0EMRLjT7lHeb8xNxhG4I/B2uvGLF65BzU4FOTgQIviND26/cAVjXXatMlNyBqJI0TUy/pb+tKecjoObtU9DC09j/D1VDhOrqw3avqWEM7oDE45WRqyzFWzKzTzba7TKvpERhEeuIE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=tAGJAC98; 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="tAGJAC98" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB984C43390; Mon, 1 Apr 2024 15:54:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1711986892; bh=7E8P2GrsGd4ve7bPe+/OV5MUJ9O+RdGd9PG38IPKc+I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tAGJAC98uBEXqXQIqJATAIwgJrN++VWgf0JdBvx3OqMbWptEjJsIAzODRbC0MjcOd JtDxROQ0HCwlfAZV/F/F1Wd9CbiIIlN6j8gITUad03EKKDXmvUzBiBpTFsLlvRJdeD M5rZJhGVhwPn7EUenI1KD/lHsc5Wg/W6Afa2BbuA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Marcel Ziswiler , Neeraj Sanjay Kale , Francesco Dolcini , Luiz Augusto von Dentz , Sasha Levin Subject: [PATCH 6.8 118/399] Bluetooth: btnxpuart: Fix btnxpuart_close Date: Mon, 1 Apr 2024 17:41:24 +0200 Message-ID: <20240401152552.711474195@linuxfoundation.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240401152549.131030308@linuxfoundation.org> References: <20240401152549.131030308@linuxfoundation.org> User-Agent: quilt/0.67 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 6.8-stable review patch. If anyone has any objections, please let me know. ------------------ From: Marcel Ziswiler [ Upstream commit 664130c0b0309b360bc5bdd40a30604a9387bde8 ] Fix scheduling while atomic BUG in btnxpuart_close(), properly purge the transmit queue and free the receive skb. [ 10.973809] BUG: scheduling while atomic: kworker/u9:0/80/0x00000002 ... [ 10.980740] CPU: 3 PID: 80 Comm: kworker/u9:0 Not tainted 6.8.0-rc7-0.0.0-devel-00005-g61fdfceacf09 #1 [ 10.980751] Hardware name: Toradex Verdin AM62 WB on Dahlia Board (DT) [ 10.980760] Workqueue: hci0 hci_power_off [bluetooth] [ 10.981169] Call trace: ... [ 10.981363] uart_update_mctrl+0x58/0x78 [ 10.981373] uart_dtr_rts+0x104/0x114 [ 10.981381] tty_port_shutdown+0xd4/0xdc [ 10.981396] tty_port_close+0x40/0xbc [ 10.981407] uart_close+0x34/0x9c [ 10.981414] ttyport_close+0x50/0x94 [ 10.981430] serdev_device_close+0x40/0x50 [ 10.981442] btnxpuart_close+0x24/0x98 [btnxpuart] [ 10.981469] hci_dev_close_sync+0x2d8/0x718 [bluetooth] [ 10.981728] hci_dev_do_close+0x2c/0x70 [bluetooth] [ 10.981862] hci_power_off+0x20/0x64 [bluetooth] Fixes: 689ca16e5232 ("Bluetooth: NXP: Add protocol support for NXP Bluetooth chipsets") Cc: stable@vger.kernel.org Signed-off-by: Marcel Ziswiler Reviewed-by: Neeraj Sanjay Kale Signed-off-by: Francesco Dolcini Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Sasha Levin --- drivers/bluetooth/btnxpuart.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/bluetooth/btnxpuart.c b/drivers/bluetooth/btnxpuart.c index 1d592ac413d1f..c19dc8a2987f3 100644 --- a/drivers/bluetooth/btnxpuart.c +++ b/drivers/bluetooth/btnxpuart.c @@ -1234,6 +1234,9 @@ static int btnxpuart_close(struct hci_dev *hdev) ps_wakeup(nxpdev); serdev_device_close(nxpdev->serdev); + skb_queue_purge(&nxpdev->txq); + kfree_skb(nxpdev->rx_skb); + nxpdev->rx_skb = NULL; clear_bit(BTNXPUART_SERDEV_OPEN, &nxpdev->tx_state); return 0; } -- 2.43.0