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| Filename | Latest commit message | Latest commit date |
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8bbc1a734e
commit aabb5b833872524eaf28f52187e5987984982264 upstream. If a transaction error happens in vhci_recv_ret_submit(), event handler closes connection and changes port status to kick hub_event. Then hub tries to flush the endpoint URBs, but that causes infinite loop between usb_hub_flush_endpoint() and vhci_urb_dequeue() because "vhci_priv" in vhci_urb_dequeue() was already released by vhci_recv_ret_submit() before a transmission error occurred. Thus, vhci_urb_dequeue() terminates early and usb_hub_flush_endpoint() continuously calls vhci_urb_dequeue(). The root cause of this issue is that vhci_recv_ret_submit() terminates early without giving back URB when transaction error occurs in vhci_recv_ret_submit(). That causes the error URB to still be linked at endpoint list without “vhci_priv". So, in the case of transaction error in vhci_recv_ret_submit(), unlink URB from the endpoint, insert proper error code in urb->status and give back URB. Reported-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com> Tested-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com> Signed-off-by: Suwan Kim <suwan.kim027@gmail.com> Cc: stable <stable@vger.kernel.org> Acked-by: Shuah Khan <skhan@linuxfoundation.org> Link: https://lore.kernel.org/r/20191213023055.19933-3-suwan.kim027@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| README | ||
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.