uvm_fault(fffffd806ef1cb78,92086d8e000,0,4) at uvm_fault+0x106 sys/uvm/uvm_fault.c:677
upageflttrap(ffff80003c47f880,92086d8e000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c47f880) at usertrap+0x403 sys/arch/amd64/amd64/trap.c:605
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x717a36212480, count: -14
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:438
witness_checkorder(fffffd806b7cea20,9,0) at witness_checkorder+0x10fb sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806b7cea08,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806b7cea08,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd805f257bf8,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527
vn_lock(fffffd805f257bf8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_lookup(ffff800033bf0fb8) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
namei(ffff800033bf0fb8) at namei+0x7aa sys/kern/vfs_lookup.c:250
unp_connect(ffff8000014af7c8,fffffd8076ef3700,ffff80003ac1f9c8) at unp_connect+0x27d sys/kern/uipc_usrreq.c:872
uipc_dgram_send(ffff8000014af7c8,fffffd806c3d2500,fffffd8076ef3700,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:609
sosend(ffff8000014af7c8,fffffd8076ef3700,ffff800033bf1238,0,0,8) at sosend+0x804 sys/kern/uipc_socket.c:-1
sendit(ffff80003ac1f9c8,3,ffff800033bf13b0,8,ffff800033bf1470) at sendit+0x721 sys/kern/uipc_syscalls.c:779
sys_sendmsg(ffff80003ac1f9c8,ffff800033bf1520,ffff800033bf1470) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:597
syscall(ffff800033bf1520) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800033bf1520) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xfbbf2e05080, count: -15