uvm_fault(fffffd806c9c1018,c008e94d000,0,2) at uvm_fault+0x169 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002a112bf0,c008e94d000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a112bf0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x71210fc408f0, 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:437
witness_checkorder(fffffd80659cf1b0,9,0) at witness_checkorder+0x1047
rw_enter(fffffd80659cf1a0,1) at rw_enter+0x122
rrw_enter(fffffd80659cf1a0,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd8062c1e3c0,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd8062c1e3c0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564
vfs_lookup(ffff80003178f738) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
namei(ffff80003178f738) at namei+0x7aa sys/kern/vfs_lookup.c:250
unp_connect(ffff80000128d4d0,fffffd8060bb2d00,ffff80003499dc00) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868
uipc_dgram_send(ffff80000128d4d0,fffffd8060bbae00,fffffd8060bb2d00,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607
sosend(ffff80000128d4d0,fffffd8060bb2d00,ffff80003178f9c8,0,0,0) at sosend+0xa40
sendit(ffff80003499dc00,3,ffff80003178fb40,0,ffff80003178fc00) at sendit+0x721 sys/kern/uipc_syscalls.c:786
sys_sendmsg(ffff80003499dc00,ffff80003178fcb0,ffff80003178fc00) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604
syscall(ffff80003178fcb0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff80003178fcb0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xe5189c883e0, count: -15