Got KASSERT when a yubikey device was plugged in. $ crash -M netbsd.9.core Crash version 7.99.35, image version 7.99.35. System panicked: kernel diagnostic assertion "xfer->ux_state == XFER_ONQU" failed: file "/home/alnsn/netbsd-current/clean/src/sys/dev/usb/usbdi.c", line 910 Backtrace from time of crash is available. crash> bt _KERNEL_OPT_NARCNET() at 0 _KERNEL_OPT_NARCNET() at 0 vpanic() at vpanic+0x149 cd_play_msf() at cd_play_msf usb_transfer_complete() at usb_transfer_complete+0x24e xhci_abort_xfer() at xhci_abort_xfer+0x15d usbd_ar_pipe() at usbd_ar_pipe+0x3b usbd_abort_pipe() at usbd_abort_pipe+0x27 uhidev_detach() at uhidev_detach+0x32 config_detach() at config_detach+0xf8 usb_disconnect_port() at usb_disconnect_port+0xae uhub_explore() at uhub_explore+0x1fe usb_discover.isra.2() at usb_discover.isra.2+0x4e usb_event_thread() at usb_event_thread+0x7c
Kernel built from src updated about a week ago: $ uname -a NetBSD neva 7.99.35 NetBSD 7.99.35 (GENERIC) #0: Wed Aug 3 23:02:01 BST 2016 alnsn@nebeda.localdomain:/home/alnsn/netbsd-current/clean/src/sys/arch/amd64/compile/obj/GENERIC amd64 $ gunzip -c /netbsd |ident |grep usbdi.c $NetBSD: usbdi.c,v 1.171 2016/05/17 11:37:50 pooka Exp $ Alex