uvm_fault(fffffd806bd38568,fe1e3441000,0,1) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600
upageflttrap(ffff80002a07c110,fe1e34411bd) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a07c110) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7ca31fe01950, count: -15
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(fffffd8075b9f1b8,9,0) at witness_checkorder+0x1047
rw_enter(fffffd8075b9f1a8,1) at rw_enter+0x122
rrw_enter(fffffd8075b9f1a8,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd806f94e5f0,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd806f94e5f0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564
vfs_lookup(ffff80002ef9dd38) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
namei(ffff80002ef9dd38) at namei+0x7aa sys/kern/vfs_lookup.c:250
unp_connect(ffff800010fdb238,fffffd806cf14300,ffff80002df76030) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868
uipc_dgram_send(ffff800010fdb238,fffffd806a160000,fffffd806cf14300,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607
sosend(ffff800010fdb238,fffffd806cf14300,ffff80002ef9dfc8,0,0,0) at sosend+0xa40
sendit(ffff80002df76030,4,ffff80002ef9e140,0,ffff80002ef9e200) at sendit+0x721 sys/kern/uipc_syscalls.c:786
sys_sendmsg(ffff80002df76030,ffff80002ef9e2b0,ffff80002ef9e200) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604
syscall(ffff80002ef9e2b0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff80002ef9e2b0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x1a923929110, count: -15