uvm_fault(fffffd806f5d4b78,110c286000,0,1) at uvm_fault+628
upageflttrap(ffff80002a2de870,110c2869e8) at upageflttrap+169
usertrap(ffff80002a2de870) at usertrap+1071
recall_trap() at recall_trap+8
end of kernel
end trace frame: 0x7b21b18fe320, count: -14
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+37:    addq    $8,%rsp
ddb{1}> trace
db_enter() at db_enter+37
witness_checkorder(fffffd807ea8da08,9,0) at witness_checkorder+4305
rw_do_enter_write(fffffd807ea8d9f0,1) at rw_do_enter_write+186
rrw_enter(fffffd807ea8d9f0,1) at rrw_enter+198
VOP_LOCK(fffffd805d82fcb8,2001) at VOP_LOCK+189
vn_lock(fffffd805d82fcb8,2001) at vn_lock+164
vfs_lookup(ffff80003c4c7950) at vfs_lookup+284
namei(ffff80003c4c7950) at namei+1994
unp_connect(ffff800001694148,fffffd807eb5b600,ffff80003c44e2c0) at unp_connect+669
uipc_dgram_send(ffff800001694148,fffffd800e38c800,fffffd807eb5b600,0) at uipc_dgram_send+355
sosend(ffff800001694148,fffffd807eb5b600,ffff80003c4c7bd8,0,0,e) at sosend+2052
sendit(ffff80003c44e2c0,85,ffff80003c4c7d58,e,ffff80003c4c7e10) at sendit+1445
sys_sendmsg(ffff80003c44e2c0,ffff80003c4c7ec0,ffff80003c4c7e10) at sys_sendmsg+582
syscall(ffff80003c4c7ec0) at syscall+3028
Xsyscall() at Xsyscall+296
end of kernel
end trace frame: 0x99ea54eaf10, count: -15