uvm_fault(fffffd806bf3f728,f3a16afe000,0,2) at uvm_fault+0x1a2 sys/uvm/uvm_fault.c:608
upageflttrap(ffff80002d578410,f3a16afe720) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002d578410) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7eb173952ea0, 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:437
witness_checkorder(fffffd80695883d8,9,0) at witness_checkorder+0x1047
rw_enter(fffffd80695883c8,1) at rw_enter+0x122
rrw_enter(fffffd80695883c8,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd8069251520,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd8069251520,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564
vfs_getcwd_common(fffffd8069251520,fffffd8069251520,0,0,200,0,9a5f47d77e9b3e92) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd8069251520,fffffd8069251520,ffff800036db56f8) at vn_isunder+0x56 sys/kern/vfs_vnops.c:688
unp_externalize(fffffd806cc10300,ec,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1094
soreceive(ffff8000012e4040,ffff80003078f178,ffff80003078f128,0,ffff80003078f168,ffff80003078f2ec,96941b6619f0f0d1) at soreceive+0xd3e sys/kern/uipc_socket.c:1090
recvit(ffff800036db56f8,5,ffff80003078f2c0,0,ffff80003078f370) at recvit+0x40a sys/kern/uipc_syscalls.c:1079
sys_recvmsg(ffff800036db56f8,ffff80003078f420,ffff80003078f370) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:879
syscall(ffff80003078f420) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff80003078f420) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2b5fb8232f0, count: -14