linux-kernel - Re: [PATCH v2] usb: usbip: fix a refcount leak in stub

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Message-ID: <7c584e2d-1c23-3df9-7e4e-c4d9a9014224@linuxfoundation.org>
Date:   Thu, 7 Apr 2022 10:31:55 -0600
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Hangyu Hua <hbh25y@...il.com>, valentina.manea.m@...il.com,
        shuah@...nel.org, gregkh@...uxfoundation.org, khoroshilov@...ras.ru
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH v2] usb: usbip: fix a refcount leak in stub_probe()

On 4/6/22 8:22 PM, Hangyu Hua wrote:
> usb_get_dev() is called in stub_device_alloc(). When stub_probe() fails
> after that, usb_put_dev() needs to be called to release the reference.
> 
> Fix this by moving usb_put_dev() to sdev_free error path handling.
> 
> Fixes: 3ff67445750a ("usbip: fix error handling in stub_probe()")
> Signed-off-by: Hangyu Hua <hbh25y@...il.com>
> Reviewed-by: Shuah Khan <skhan@...uxfoundation.org>
> ---
> 
> v2: add more description of this patch.

Still missing details on how this problem was found. Please add them
to the commit log.

thanks,
-- Shuah