uvm_fault(fffffd806c3d1c58,9fde376f000,0,2) at uvm_fault+0x2f0 sys/uvm/uvm_fault.c:637
upageflttrap(ffff8000372346f0,9fde376f000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff8000372346f0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7345d9f77bb0, 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(fffffd806e03cf88,9,0) at witness_checkorder+0x1047
rw_enter(fffffd806e03cf78,1) at rw_enter+0x122
rrw_enter(fffffd806e03cf78,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd80652070d8,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd80652070d8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564
vfs_lookup(ffff80002a0a23d8) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
namei(ffff80002a0a23d8) at namei+0x7aa sys/kern/vfs_lookup.c:250
unp_connect(ffff80000131b4c0,fffffd806e909900,ffff8000ffffc7a8) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868
uipc_dgram_send(ffff80000131b4c0,fffffd806cf21b00,fffffd806e909900,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607
sosend(ffff80000131b4c0,fffffd806e909900,ffff80002a0a2668,0,0,0) at sosend+0xa40
sendit(ffff8000ffffc7a8,3d,ffff80002a0a27e0,0,ffff80002a0a28a0) at sendit+0x721 sys/kern/uipc_syscalls.c:786
sys_sendmsg(ffff8000ffffc7a8,ffff80002a0a2950,ffff80002a0a28a0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604
syscall(ffff80002a0a2950) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff80002a0a2950) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9fdff253710, count: -15