uvm_fault(fffffd806385d3f8,1287ed54000,0,2) at uvm_fault+0x106 sys/uvm/uvm_fault.c:633
upageflttrap(ffff80003c408300,1287ed543e8) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c408300) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:622
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x76568ad57440, count: -13
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
witness_checkorder(fffffd806d2898d8,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806d2898c0,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806d2898c0,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd800bba5a40,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
vn_lock(fffffd800bba5a40,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_getcwd_common(fffffd800bba5a40,fffffd800be02e80,0,0,200,0,63037b837dd554a5) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd800bba5a40,fffffd800be02e80,ffff8000fffe14f0) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694
unp_externalize(fffffd806775f300,33,0) at unp_externalize+0x26f sys/kern/uipc_usrreq.c:1090
soreceive(ffff800010fdc300,ffff8000337deb58,ffff8000337deb08,0,ffff8000337deb40,ffff8000337deccc,fb1f52a90c579369) at soreceive+0xc24 sys/kern/uipc_socket.c:1017
recvit(ffff8000fffe14f0,4,ffff8000337deca0,0,ffff8000337ded50) at recvit+0x40b sys/kern/uipc_syscalls.c:1078
sys_recvmsg(ffff8000fffe14f0,ffff8000337dee00,ffff8000337ded50) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878
syscall(ffff8000337dee00) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff8000337dee00) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x83365b783b0, count: -14