uvm_fault(fffffd805e97a7c8,319b88ff000,0,1) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80003c4719e0,319b88ffdb0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c4719e0) at usertrap+0x403 sys/arch/amd64/amd64/trap.c:605
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x792a0d0479e0, 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(fffffd805ef59210,9,0) at witness_checkorder+0x10fb sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd805ef591f8,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:234
rrw_enter(fffffd805ef591f8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd8070b9a020,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527
vn_lock(fffffd8070b9a020,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_getcwd_common(fffffd8070b9a020,fffffd8070b9abf0,0,0,200,0,40b25dc01c150ae8) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd8070b9a020,fffffd8070b9abf0,ffff8000377f94a0) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694
unp_externalize(fffffd8066e20c00,33,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1090
soreceive(ffff800001528060,ffff8000377f1bd8,ffff8000377f1b88,0,ffff8000377f1bc8,ffff8000377f1d4c,773cf1a8ad8ccf8a) at soreceive+0xc73 sys/kern/uipc_socket.c:1009
recvit(ffff8000377f94a0,6,ffff8000377f1d20,0,ffff8000377f1dd0) at recvit+0x40a sys/kern/uipc_syscalls.c:1072
sys_recvmsg(ffff8000377f94a0,ffff8000377f1e80,ffff8000377f1dd0) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:872
syscall(ffff8000377f1e80) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff8000377f1e80) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x5524dc05fc0, count: -14