uvm_fault(fffffd806bddfaa8,fdc29143000,0,1) at uvm_fault+0x1dc sys/uvm/uvm_fault.c:617
upageflttrap(ffff800030d80e20,fdc29143000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff800030d80e20) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x761ae4412f10, 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(fffffd806bfde4e0,9,0) at witness_checkorder+0x1047
rw_enter(fffffd806bfde4d0,1) at rw_enter+0x122
rrw_enter(fffffd806bfde4d0,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd80603fd058,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd80603fd058,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564
vfs_lookup(ffff80003458baa8) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
namei(ffff80003458baa8) at namei+0x7aa sys/kern/vfs_lookup.c:250
unp_connect(ffff8000013427f8,fffffd805f515d00,ffff80003726ea58) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868
uipc_dgram_send(ffff8000013427f8,fffffd805f515e00,fffffd805f515d00,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607
sosend(ffff8000013427f8,fffffd805f515d00,ffff80003458bd38,0,0,0) at sosend+0xa40
sendit(ffff80003726ea58,7,ffff80003458beb0,0,ffff80003458bf70) at sendit+0x721 sys/kern/uipc_syscalls.c:786
sys_sendmsg(ffff80003726ea58,ffff80003458c020,ffff80003458bf70) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604
syscall(ffff80003458c020) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff80003458c020) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4c25d441fe0, count: -15