uvm_fault(0xffffffff826445f0, 0xa, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      vio_rxeof+0x191:        movzwl  0xa(%r15),%eax
ddb{0}> 
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
kernel page fault
uvm_fault(0xffffffff826445f0, 0xa, 0, 1) -> e
vio_rxeof(ffff80000017b000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018
end trace frame: 0xffff800020e21370, count: 0
ddb{0}> trace
vio_rxeof(ffff80000017b000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018
vio_rx_intr(ffff80000017b050) at vio_rx_intr+0x4d sys/dev/pv/if_vio.c:1054
intr_handler(ffff800020e213d0,ffff800000255b80) at intr_handler+0x8f sys/arch/amd64/amd64/intr.c:529
Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f
acpicpu_idle() at acpicpu_idle+0x331 sys/dev/acpi/acpicpu.c:1187
sched_idle(ffffffff82511ff0) at sched_idle+0x3f7 sys/kern/kern_sched.c:182
end trace frame: 0x0, count: -6
ddb{0}> show registers
rdi                              0xc
rsi                              0xc
rbp               0xffff800020e21310
rbx               0xffff80000017b000
rdx                                0
rcx               0xffff8000001ac000
rax                              0xc
r8                               0x2
r9                                 0
r10               0xb7266bd24dc057e5
r11               0x81d4f521cfcc3285
r12               0xffff800000024c00
r13                              0xc
r14               0xfffffd806f29d200
r15                                0
rip               0xffffffff816a5721    vio_rxeof+0x191
cs                               0x8
rflags                       0x10246    __ALIGN_SIZE+0xf246
rsp               0xffff800020e21280
ss                              0x10
vio_rxeof+0x191:        movzwl  0xa(%r15),%eax
ddb{0}>