uvm_fault(fffffd806beb7b58,56a02472000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff800030c57e90,56a02472000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff800030c57e90) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x76639060a870, count: -14
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(fffffd806884b0a0,9,0) at witness_checkorder+0x10fb sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806884b088,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233
rrw_enter(fffffd806884b088,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:606
VOP_LOCK(fffffd80655fb1f0,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527
vn_lock(fffffd80655fb1f0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_lookup(ffff80002ffe5b08) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
namei(ffff80002ffe5b08) at namei+0x7aa sys/kern/vfs_lookup.c:250
unp_connect(ffff8000014cf700,fffffd806878d600,ffff80002a32a2c8) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868
uipc_dgram_send(ffff8000014cf700,fffffd806e926100,fffffd806878d600,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607
sosend(ffff8000014cf700,fffffd806878d600,ffff80002ffe5d88,0,0,8) at sosend+0x804 sys/kern/uipc_socket.c:-1
sendit(ffff80002a32a2c8,6,ffff80002ffe5f00,8,ffff80002ffe5fc0) at sendit+0x721 sys/kern/uipc_syscalls.c:779
sys_sendmsg(ffff80002a32a2c8,ffff80002ffe6070,ffff80002ffe5fc0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:597
syscall(ffff80002ffe6070) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002ffe6070) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb5474cdb9f0, count: -15