uvm_fault(fffffd806bfa2568,fe4b0d87000,0,2) at uvm_fault+0xec sys/uvm/uvm_fault.c:595
upageflttrap(ffff8000371bc8d0,fe4b0d87258) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff8000371bc8d0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x736e7ddeedf0, 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(fffffd806bf81700,9,0) at witness_checkorder+0x1047
rw_enter(fffffd806bf816f0,1) at rw_enter+0x122
rrw_enter(fffffd806bf816f0,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd8065a93dd8,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd8065a93dd8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564
vfs_lookup(ffff8000371f2938) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
namei(ffff8000371f2938) at namei+0x7aa sys/kern/vfs_lookup.c:250
unp_connect(ffff800001290fa0,fffffd8063bf1200,ffff8000ffff2530) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868
uipc_dgram_send(ffff800001290fa0,fffffd80639fc900,fffffd8063bf1200,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607
sosend(ffff800001290fa0,fffffd8063bf1200,ffff8000371f2bc8,0,0,0) at sosend+0xa40
sendit(ffff8000ffff2530,5,ffff8000371f2d40,0,ffff8000371f2e00) at sendit+0x721 sys/kern/uipc_syscalls.c:786
sys_sendmsg(ffff8000ffff2530,ffff8000371f2eb0,ffff8000371f2e00) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604
syscall(ffff8000371f2eb0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff8000371f2eb0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x25497a2b820, count: -15