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 9BDC1331ECC; Thu, 25 Jun 2026 14:58:07 +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=1782399488; cv=none; b=CoSxAl7w9MQHZjHKo/Wi4Hxl9EAvrsvyQBdq/dvAvm7ry/Z0tCniyOTYFl6qMGWxwPfDurAjExCnkjKJMa0AMdtAYeIsrzhFQxDvAnB6yuuQq3AQRQkorIIszf9ytUYKx+LgjIbhTcZtHX7GampymjOOCVhPNbF9qDpfYC3Lqu0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782399488; c=relaxed/simple; bh=pSb9HlCrDrSyzMM7xZNFv4Kr3g0QpIeruoin5cin0Ps=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=s0vL4jZageepEEJaQavPVDn1Zq1kzfBKJInyC/c1QLdwvQwteoSQXHsAT/qU7ywYb2TEet08p9V6l7ga20ATrWMLvOac1UMk1c6jsRLQmXD8dVFm1/Xr7DFEN8qflWJ/IClxylnRDMhfQnESMG7snka1WhbCohhjEpmxZX0Fgxk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=dXrhJzBR; 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="dXrhJzBR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AC04C1F000E9; Thu, 25 Jun 2026 14:58:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1782399487; bh=MNZWLCYE4VmycRO819/fu330j9HLVM2sZRLtKNHCeqg=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=dXrhJzBRb7Y255wkmBApyv01HkNQ9rk0oy7SBnqs6NdpMt5Ua0F2wEg9cOsFGmaK8 t7vhgvS+AHqSFqICcfnNNGns6SqCG7iIBcfQaXWmCMbQ4DwhZ0DMYm10y1R351fPfm 859XO0OoUz/+jpt8Vg2LqpzPGD+AFOWZVAgvt7WE= Date: Thu, 25 Jun 2026 15:56:54 +0100 From: Greg Kroah-Hartman To: Johan Hovold Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH] USB: serial: digi_acceleport: fix hard lockup on disconnect Message-ID: <2026062550-facelift-happiness-7279@gregkh> References: <20260623151110.315126-1-johan@kernel.org> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260623151110.315126-1-johan@kernel.org> On Tue, Jun 23, 2026 at 05:11:10PM +0200, Johan Hovold wrote: > If submitting the OOB write urb fails persistently (e.g if the device is > being disconnected) the driver would loop indefinitely with interrupts > disabled. > > Check for urb submission errors when sending OOB commands to avoid > hanging if, for example, open(), set_termios() or close() races with a > physical disconnect. > > This is issue was flagged by Sashiko when reviewing an unrelated change > to the driver. > > Link: https://sashiko.dev/#/patchset/20260610132232.356139-1-johan%40kernel.org?part=1 > Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") > Cc: stable@vger.kernel.org > Signed-off-by: Johan Hovold Reviewed-by: Greg Kroah-Hartman