uvm_fault(fffffd805ee03210,8e140d57000,0,1) at uvm_fault+0x159 sys/uvm/uvm_fault.c:682
upageflttrap(ffff80003a81bde0,8e140d57740) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003a81bde0) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7e15583a1d40, count: -16
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(fffffd806e3c6d90,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806e3c6d78,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806e3c6d78,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd805d438b20,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
vn_lock(fffffd805d438b20,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_getcwd_common(fffffd805d438b20,fffffd805d438538,0,0,200,0,c1a61bdb028352b7) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd805d438b20,fffffd805d438538,ffff80002effba20) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694
unp_externalize(fffffd806d088400,33,0) at unp_externalize+0x26f sys/kern/uipc_usrreq.c:1090
soreceive(ffff80000149ba88,ffff80003b82db38,ffff80003b82dae8,0,ffff80003b82db20,ffff80003b82dcac,953ecfe735c6852f) at soreceive+0xc24 sys/kern/uipc_socket.c:1009
recvit(ffff80002effba20,6,ffff80003b82dc80,0,ffff80003b82dd30) at recvit+0x40b sys/kern/uipc_syscalls.c:1078
sys_recvmsg(ffff80002effba20,ffff80003b82dde0,ffff80003b82dd30) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878
syscall(ffff80003b82dde0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003b82dde0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x5801b6ddc20, count: -14