uvm_fault(fffffd806c594c20,33e13309000,0,4) at uvm_fault+0x169 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002a09e0d0,33e13309680) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a09e0d0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7af78f1ffd60, 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(fffffd8069b134d8,9,0) at witness_checkorder+0x1047
rw_enter(fffffd8069b134c8,1) at rw_enter+0x122
rrw_enter(fffffd8069b134c8,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd8063ed9630,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd8063ed9630,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564
vfs_lookup(ffff8000371c8de8) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
namei(ffff8000371c8de8) at namei+0x7aa sys/kern/vfs_lookup.c:250
unp_connect(ffff8000013b4fc8,fffffd8062a0a200,ffff8000ffff71d8) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868
uipc_dgram_send(ffff8000013b4fc8,fffffd8062a9ac00,fffffd8062a0a200,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607
sosend(ffff8000013b4fc8,fffffd8062a0a200,ffff8000371c9078,0,0,0) at sosend+0xa40
sendit(ffff8000ffff71d8,6,ffff8000371c91f0,0,ffff8000371c92b0) at sendit+0x721 sys/kern/uipc_syscalls.c:786
sys_sendmsg(ffff8000ffff71d8,ffff8000371c9360,ffff8000371c92b0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604
syscall(ffff8000371c9360) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff8000371c9360) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xe482ea0b360, count: -15