panic: vwakeup: neg numoutput
Starting stack trace...
panic(ffffffff83386ac3) at panic+0x1d0 sys/kern/subr_prf.c:229
vwakeup(fffffd806c97bea0) at vwakeup+0x17c
biodone(fffffd80640307a8) at biodone+0x121 sys/kern/vfs_bio.c:1290
sd_buf_done(fffffd80097f4360) at sd_buf_done+0x2de sys/scsi/sd.c:772
scsi_done(fffffd80097f4360) at scsi_done+0x40 sys/scsi/scsi_base.c:1496
vioscsi_vq_done(ffff8000000a4268) at vioscsi_vq_done+0xe1 sys/dev/pv/vioscsi.c:-1
intr_handler(ffff80002a252b80,ffff80000006b400) at intr_handler+0x125 sys/arch/amd64/amd64/intr.c:564
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
Xspllower() at Xspllower+0x1d
msleep_nsec(ffffffff839f9d98,ffffffff83881910,4,ffffffff8341195c,ffffffffffffffff) at msleep_nsec+0x11c sys/kern/kern_synch.c:219
smr_thread(ffff8000ffffca68) at smr_thread+0x17b sys/kern/kern_smr.c:98
end trace frame: 0x0, count: 246
End of stack trace.