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7652dd2c5c
A type of inconsistency that can show up in control URBs is when the setup packet's wLength value does not match the URB's transfer_buffer_length field. The two should always be equal; differences could lead to information leaks or undefined behavior for OUT transfers or overruns for IN transfers. This patch adds a test for such mismatches during URB submission. If the test fails, the submission is rejected with a -EBADR error code (which is not used elsewhere in the USB core), and a debugging message is logged for people interested in tracking down these errors. Reviewed-by: Johan Hovold <johan@kernel.org> Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/20210526153244.GA1400430@rowland.harvard.edu Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| .. | ||
| anchors.rst | ||
| bulk-streams.rst | ||
| callbacks.rst | ||
| dma.rst | ||
| dwc3.rst | ||
| error-codes.rst | ||
| gadget.rst | ||
| hotplug.rst | ||
| index.rst | ||
| persist.rst | ||
| power-management.rst | ||
| typec_bus.rst | ||
| typec.rst | ||
| URB.rst | ||
| usb3-debug-port.rst | ||
| usb.rst | ||
| writing_musb_glue_layer.rst | ||
| writing_usb_driver.rst | ||