uvm_fault(ffff800001e5fd88,e0236b04000,0,1) at uvm_fault+0x338 sys/uvm/uvm_fault.c:650
upageflttrap(ffff800029910ea0,e0236b04000) at upageflttrap+0xe0 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff800029910ea0) at usertrap+0x4f9 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x75f982ca1580, count: -12
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x17:  popq    %rbp
ddb{1}> trace
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
witness_checkorder(ffff8000019d82f0,9,0) at witness_checkorder+0x19db sys/kern/subr_witness.c:-1
rw_do_enter_write(ffff8000019d82d8,1) at rw_do_enter_write+0xc4 sys/kern/kern_rwlock.c:234
rrw_enter(ffff8000019d82d8,1) at rrw_enter+0xf0 sys/kern/kern_rwlock.c:621
VOP_LOCK(ffff800001ea6050,2001) at VOP_LOCK+0x17e sys/kern/vfs_vops.c:527
vn_lock(ffff800001ea6050,2001) at vn_lock+0xca sys/kern/vfs_vnops.c:576
vfs_lookup(ffff80003bb5eda0) at vfs_lookup+0x1f7 sys/kern/vfs_lookup.c:431
namei(ffff80003bb5eda0) at namei+0xe19 sys/kern/vfs_lookup.c:250
unp_connect(ffff800001dda928,fffffd8068981400,ffff8000298a34f8) at unp_connect+0x2b9 sys/kern/uipc_usrreq.c:872
uipc_dgram_send(ffff800001dda928,fffffd80141b1d00,fffffd8068981400,0) at uipc_dgram_send+0x1f8 sys/kern/uipc_usrreq.c:609
sosend(ffff800001dda928,fffffd8068981400,ffff80003bb5f140,0,0,400) at sosend+0xb96 sys/kern/uipc_socket.c:-1
sendit(ffff8000298a34f8,5,ffff80003bb5f250,400,ffff80003bb5f420) at sendit+0x83b sys/kern/uipc_syscalls.c:785
sys_sendto(ffff8000298a34f8,ffff80003bb5f4b0,ffff80003bb5f420) at sys_sendto+0x15c sys/kern/uipc_syscalls.c:563
syscall(ffff80003bb5f4b0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003bb5f4b0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf1e134a5390, count: -15