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 B991A78F52; Mon, 12 May 2025 17:31:51 +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=1747071111; cv=none; b=q6p+kKdg7LfwQ5WvMkj3OFw54D8hU5+AWEgJcHk7rrIrg/P5/oFKmHS8f/bdPJLDniRBzqEXMklCdT+gEMn0DVFd931JAJJ0KIwZAYsgZVIwXllDBfv5u5YQLDDY6hgngG0zlUPUoew1Akxq+7sY81IFDfDDGwL2BuQJs1OT+Qo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747071111; c=relaxed/simple; bh=G6aL0jKwBWt/MBlS8pKb0ahTramTj5//viNnwj1bai4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=FGqufxcueiWaJzNsss5ykZMKmxCiMqkj/tFysFWNj+MTrqX+Sv/BW8kgxG0F/e9tzHOTr6DYSg0zhX9XW6H1ZlFYbOhhsbAT/lNqoOZ19WWjDdDbpDtpUk0UDwM26QbUpX6BYpnujsqqH0T1rw6kkzsyLSLQuqMOK7VopypJ+L0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=pMBXQNhT; 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="pMBXQNhT" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4B64FC4CEE7; Mon, 12 May 2025 17:31:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1747071111; bh=G6aL0jKwBWt/MBlS8pKb0ahTramTj5//viNnwj1bai4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pMBXQNhTWv4Hm1xH4Y63MNnY6bMTkQh5gdqwQMnnWGhEFH0hWMltkofQeX9551Gr6 Puz+X7zjQn05SvNu5mRai4Q9qyUPuVLK3d0pD8Gpc496Y0i5A4hpYEWPvMXaHHTJ1z JqhmmmAocfbZLMIbXwG9GZ7fsayskvVIXG9zocQE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dave Penkler Subject: [PATCH 5.15 43/54] usb: usbtmc: Fix erroneous wait_srq ioctl return Date: Mon, 12 May 2025 19:29:55 +0200 Message-ID: <20250512172017.375802104@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250512172015.643809034@linuxfoundation.org> References: <20250512172015.643809034@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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dave Penkler commit a9747c9b8b59ab4207effd20eb91a890acb44e16 upstream. wait_event_interruptible_timeout returns a long The return was being assigned to an int causing an integer overflow when the remaining jiffies > INT_MAX resulting in random error returns. Use a long return value, converting to the int ioctl return only on error. Fixes: 739240a9f6ac ("usb: usbtmc: Add ioctl USBTMC488_IOCTL_WAIT_SRQ") Cc: stable@vger.kernel.org Signed-off-by: Dave Penkler Link: https://lore.kernel.org/r/20250502070941.31819-3-dpenkler@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/usbtmc.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) --- a/drivers/usb/class/usbtmc.c +++ b/drivers/usb/class/usbtmc.c @@ -606,9 +606,9 @@ static int usbtmc488_ioctl_wait_srq(stru { struct usbtmc_device_data *data = file_data->data; struct device *dev = &data->intf->dev; - int rv; u32 timeout; unsigned long expire; + long wait_rv; if (!data->iin_ep_present) { dev_dbg(dev, "no interrupt endpoint present\n"); @@ -622,25 +622,24 @@ static int usbtmc488_ioctl_wait_srq(stru mutex_unlock(&data->io_mutex); - rv = wait_event_interruptible_timeout( - data->waitq, - atomic_read(&file_data->srq_asserted) != 0 || - atomic_read(&file_data->closing), - expire); + wait_rv = wait_event_interruptible_timeout( + data->waitq, + atomic_read(&file_data->srq_asserted) != 0 || + atomic_read(&file_data->closing), + expire); mutex_lock(&data->io_mutex); /* Note! disconnect or close could be called in the meantime */ if (atomic_read(&file_data->closing) || data->zombie) - rv = -ENODEV; + return -ENODEV; - if (rv < 0) { - /* dev can be invalid now! */ - pr_debug("%s - wait interrupted %d\n", __func__, rv); - return rv; + if (wait_rv < 0) { + dev_dbg(dev, "%s - wait interrupted %ld\n", __func__, wait_rv); + return wait_rv; } - if (rv == 0) { + if (wait_rv == 0) { dev_dbg(dev, "%s - wait timed out\n", __func__); return -ETIMEDOUT; }