uvm_fault(fffffd806bec71f8,c0c7111b000,0,1) at uvm_fault+0x1ee sys/uvm/uvm_fault.c:700
upageflttrap(ffff800038022af0,c0c7111b000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff800038022af0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7eb871b21110, count: -11
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(fffffd806c08bc20,9,0) at witness_checkorder+0x10fb sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806c08bc08,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233
rrw_enter(fffffd806c08bc08,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616
VOP_LOCK(fffffd80674e3978,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd80674e3978,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_lookup(ffff8000368039e8) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
namei(ffff8000368039e8) at namei+0x7aa sys/kern/vfs_lookup.c:250
unp_connect(ffff800001692b80,fffffd8069ee3e00,ffff80003c460038) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868
uipc_dgram_send(ffff800001692b80,fffffd806e99b900,fffffd8069ee3e00,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607
sosend(ffff800001692b80,fffffd8069ee3e00,ffff800036803c68,0,0,8) at sosend+0x804 sys/kern/uipc_socket.c:-1
sendit(ffff80003c460038,d,ffff800036803de0,8,ffff800036803ea0) at sendit+0x721 sys/kern/uipc_syscalls.c:779
sys_sendmsg(ffff80003c460038,ffff800036803f50,ffff800036803ea0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:597
syscall(ffff800036803f50) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800036803f50) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x58d48c51e70, count: -15