errno == 14 means EFAULT, which means an invalid memory address was passed to 
the kernel for the return buffer for the REAP ioctl. I'm not surprised that you 
can induce this error with enough EMI noise, but this is not a libusb bug, this 
simply means you're flipping bits in your host memory and/or causing 
interference on the RAM bus.

---
Reply to this email directly or view it on GitHub:
https://github.com/libusbx/libusbx/issues/76#issuecomment-31652870
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