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Commit8c67d06f3f("usb: Link the ports to the connectors they are attached to") creates a link to the USB Type-C connector for every new port that is added when possible. If component_add() fails, usb_hub_create_port_device() prints a warning but does not unregister the device and does not return errors to the callers. Syzbot reported a "WARNING in component_del()". Fix this issue in usb_hub_create_port_device by calling device_unregister() and returning the errors from component_add(). Fixes:8c67d06f3f("usb: Link the ports to the connectors they are attached to") Reported-and-tested-by: syzbot+60df062e1c41940cae0f@syzkaller.appspotmail.com Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com> Link: https://lore.kernel.org/r/20220209164500.8769-1-fmdefrancesco@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.