uvm_fault(fffffd806bf2caa0,add2232b000,0,4) at uvm_fault+0x2f0 sys/uvm/uvm_fault.c:637
upageflttrap(ffff800037267ee0,add2232b4d0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff800037267ee0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x757455b42020, 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(fffffd8078497920,9,0) at witness_checkorder+0x1047
rw_enter(fffffd8078497910,1) at rw_enter+0x122
rrw_enter(fffffd8078497910,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd805f5f8388,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd805f5f8388,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564
vfs_lookup(ffff80002a0e68c8) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
namei(ffff80002a0e68c8) at namei+0x7aa sys/kern/vfs_lookup.c:250
unp_connect(ffff80000143ca78,fffffd807d29f900,ffff80003257fc20) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868
uipc_dgram_send(ffff80000143ca78,fffffd806eaa3a00,fffffd807d29f900,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607
sosend(ffff80000143ca78,fffffd807d29f900,ffff80002a0e6b58,0,0,0) at sosend+0xa40
sendit(ffff80003257fc20,4,ffff80002a0e6cd0,0,ffff80002a0e6d90) at sendit+0x721 sys/kern/uipc_syscalls.c:786
sys_sendmsg(ffff80003257fc20,ffff80002a0e6e40,ffff80002a0e6d90) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604
syscall(ffff80002a0e6e40) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff80002a0e6e40) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfea3ca509a0, count: -15