From: Dan Carpenter <dan.carpenter@linaro.org>
To: Johan Hovold <johan@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] USB: serial: Fix use after free in debug printk
Date: Thu, 31 Oct 2024 12:35:31 +0300 [thread overview]
Message-ID: <8bad985d-4655-45d2-b448-2b3377a8438c@stanley.mountain> (raw)
In-Reply-To: <ZyNI3rQw6q4pkqpD@hovoldconsulting.com>
On Thu, Oct 31, 2024 at 10:07:42AM +0100, Johan Hovold wrote:
> On Thu, Oct 31, 2024 at 09:59:10AM +0300, Dan Carpenter wrote:
> > The dev_dbg() call dereferences "urb" but it was already freed on the
> > previous line. Move the debug output earlier in the function.
>
> Thanks for catching this, but please use a temporary variable for the
> struct device pointer instead of changing the flow.
>
Why? The output is the same either way and this way is cleaner code.
> Also make sure to include the driver name in the patch summary prefix
> (i.e. "USB: serial: io_edgeport: ..."):
Sure.
regards,
dan carpenter
next prev parent reply other threads:[~2024-10-31 9:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-31 6:59 Dan Carpenter
2024-10-31 9:07 ` Johan Hovold
2024-10-31 9:35 ` Dan Carpenter [this message]
2024-10-31 9:39 ` Dan Carpenter
2024-10-31 13:21 ` Johan Hovold
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