uvm_fault(fffffd806bf808e8,f51d317d000,0,1) at uvm_fault+0x1e0 sys/uvm/uvm_fault.c:622
upageflttrap(ffff80003728d850,f51d317d000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80003728d850) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7b11f01b5460, 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(fffffd8075c8d3d8,9,0) at witness_checkorder+0x1047
rw_enter(fffffd8075c8d3c8,1) at rw_enter+0x122
rrw_enter(fffffd8075c8d3c8,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd8062767b28,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd8062767b28,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564
vfs_lookup(ffff80002a098918) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
namei(ffff80002a098918) at namei+0x7aa sys/kern/vfs_lookup.c:250
unp_connect(ffff80000131c2d0,fffffd806ee47100,ffff80002a09b1f0) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868
uipc_dgram_send(ffff80000131c2d0,fffffd806cdc4c00,fffffd806ee47100,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607
sosend(ffff80000131c2d0,fffffd806ee47100,ffff80002a098ba8,0,0,0) at sosend+0xa40
sendit(ffff80002a09b1f0,4,ffff80002a098d20,0,ffff80002a098de0) at sendit+0x721 sys/kern/uipc_syscalls.c:786
sys_sendmsg(ffff80002a09b1f0,ffff80002a098e90,ffff80002a098de0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604
syscall(ffff80002a098e90) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff80002a098e90) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb9adc3ac8b0, count: -15