uvm_fault(fffffd806a3efe20,a3dc99a8000,0,2) at uvm_fault+0x1a2 sys/uvm/uvm_fault.c:608
upageflttrap(ffff80002ef7f080,a3dc99a81f8) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002ef7f080) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x722339e5e3d0, count: -11
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(fffffd806bbfe818,9,0) at witness_checkorder+0x1047
rw_enter(fffffd806bbfe808,1) at rw_enter+0x122
rrw_enter(fffffd806bbfe808,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd806a4101e8,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd806a4101e8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564
vfs_lookup(ffff80002d579678) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
namei(ffff80002d579678) at namei+0x7aa sys/kern/vfs_lookup.c:250
unp_connect(ffff800001318a68,fffffd806a384000,ffff800032399468) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868
uipc_dgram_send(ffff800001318a68,fffffd806a432e00,fffffd806a384000,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607
sosend(ffff800001318a68,fffffd806a384000,ffff80002d579908,0,0,0) at sosend+0xa40
sendit(ffff800032399468,4,ffff80002d579a80,0,ffff80002d579b40) at sendit+0x721 sys/kern/uipc_syscalls.c:786
sys_sendmsg(ffff800032399468,ffff80002d579bf0,ffff80002d579b40) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604
syscall(ffff80002d579bf0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff80002d579bf0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x1f9080181e0, count: -15