The issue is related to the mos7840 driver in the Linux kernel, which can cause a crash on resume due to the lack of dedicated suspend and resume functions. This can be triggered when the USB serial core calls the generic resume implementation, and both port read URBs are submitted on resume for open ports, but the context pointer of the second URB is left set to the core rather than the mos7840 port structure. The problem was introduced after support for multiple read URBs was added in 2011.