uvm_fault(0xffffffff839dba20, 0xffff80001e6c2000, 0, 2) -> d
kernel: page fault trap, code=2
Stopped at      memset+0x52:    repe stosq      %es:(%rdi)
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
memset() at memset+0x52
ffs_write(ffff80002a2469d0) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345
VOP_WRITE(fffffd806e56a548,ffff80002a246a60,0,fffffd80097fd3a8) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245
uvn_io(fffffd806f69d828,ffff80002a246be0,1,39,1) at uvn_io+0x498 sys/uvm/uvm_vnode.c:1232
uvm_pager_put(fffffd806f69d828,fffffd800820cc88,ffff80002a246c80,ffff80002a246ca4,39,0,f5adaff6a892ab61) at uvm_pager_put+0x10a sys/uvm/uvm_pager.c:505
uvn_flush(fffffd806f69d828,0,0,19) at uvn_flush+0x690 sys/uvm/uvm_vnode.c:705
uvn_detach(fffffd806f69d828) at uvn_detach+0xcf sys/uvm/uvm_vnode.c:344
uvm_unmap_detach(ffff80002a246db0,0) at uvm_unmap_detach+0x15e sys/uvm/uvm_map.c:1370
uvm_map_teardown(fffffd806e85c7b0) at uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2536
exit1(ffff8000ffffc538,43,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260
sys_exit(ffff8000ffffc538,ffff80002a246f80,ffff80002a246ed0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a246f80) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a246f80) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x70452c051c60, count: 2
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