current panic

[John Klos <john%ziaspace.com@localhost>]

I was just starting some pkgsrc compiles in a netbsd-7 chroot on a 
Raspberry Pi 2 (earmv7hf) running current from 18-Aug, and:

uvm_fault(0x98767da0, 0, 1) -> e
Fatal kernel mode data abort: 'Translation Fault (P)'
trapframe: 0xb777fa78
FSR=00000017, FAR=00000030, spsr=60040013
r0 =00000000, r1 =00000000, r2 =00000000, r3 =80526d30
r4 =ba38c3c0, r5 =00000000, r6 =babab810, r7 =bad3f6d8
r8 =baeedb00, r9 =ba38c3c0, r10=00000000, r11=b777fadc
r12=b777fac8, ssp=b777fac8, slr=8020a43c, pc =800ca7f8

panic: lock error: Mutex: mutex_vector_enter: locking against myself: lock 
0xbacaa5a4 cpu 3 lwp 0xbab75120
cpu3: Begin traceback...
0xb777f4c4: netbsd:db_panic+0xc
0xb777f4f4: netbsd:vpanic+0x1b0
0xb777f50c: netbsd:snprintf
0xb777f54c: netbsd:lockdebug_abort+0x68
0xb777f5ac: netbsd:mutex_enter+0x444
0xb777f5cc: netbsd:dwc2_device_bulk_transfer+0x2c
0xb777f60c: netbsd:usbd_transfer+0x138
0xb777f684: netbsd:urtwn_rxeof+0x3c8
0xb777f6c4: netbsd:usb_transfer_complete+0x644
0xb777f6e4: netbsd:dwc2_softintr+0x6c
0xb777f6fc: netbsd:usb_schedsoftintr+0x58
0xb777f724: netbsd:dwc2_host_complete+0xf8
0xb777f764: netbsd:dwc2_hc_xfercomp_intr+0x2e8
0xb777f7d4: netbsd:dwc2_handle_hcd_intr+0x70c
0xb777f7ec: netbsd:dwc2_interrupt+0x28
0xb777f804: netbsd:dwc2_poll+0x28
0xb777f814: netbsd:usbd_dopoll+0x20
0xb777f83c: netbsd:ukbd_cngetc+0x70
0xb777f864: netbsd:wskbd_cngetc+0xc8
0xb777f884: netbsd:cngetc+0x44
0xb777f8b4: netbsd:db_readline+0x60
0xb777f8cc: netbsd:db_read_line+0x24
0xb777f92c: netbsd:db_command_loop+0xa8
0xb777f94c: netbsd:db_trap+0xe4
0xb777f9d4: netbsd:kdb_trap+0x1d4
0xb777f9fc: netbsd:dab_fatal+0x150
0xb777fa74: netbsd:data_abort_handler+0x1e8
0xb777fadc: netbsd:address_exception_entry+0x5c
0xb777fb1c: netbsd:nd6_output+0x4f0
0xb777fc84: netbsd:ip6_output+0xe08
0xb777fd6c: netbsd:tcp_output+0xb7c
0xb777fda4: netbsd:tcp_connect_wrapper+0x21c
0xb777fdc4: netbsd:soconnect+0x9c
0xb777fdf4: netbsd:do_sys_connect+0x94
0xb777ff0c: netbsd:sys_connect+0x40
0xb777ff84: netbsd:syscall+0x84
0xb777ffac: netbsd:swi_handler+0x8c
cpu3: End traceback...