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<think>
Okay, so I'm trying to figure out how to classify this bug report for QEMU. The user mentioned that the system emulator crashed when using the xhci USB controller with ausb-bt-dongle device. They provided details about the QEMU revision, the command line used, and an error message from core.c in the usb directory.
First, I'll look at the error message: it's an assertion failure in usb_packet_copy where p->actual_length + bytes exceeds iov->size. This suggests something is wrong with how USB packets are being handled, possibly related to buffer overflows or incorrect lengths during data transfer.
Looking at the possible categories: assembly, device, graphic, socket, network, KVM, boot, vnc, debug, files, permissions, performance, kernel, peripherals, hypervisor. The crash is happening in the USB core code, so it's directly related to a peripheral device (the USB controller and dongle).
Since this involves the USB subsystem within QEMU, which emulates devices for the VM, the category should be 'peripherals'. It doesn't seem like a mistranslation or assembly issue. Other categories like network or socket don't fit because it's specifically about USB.
</think>
peripherals
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