uvm_fault(fffffd806be448e0,36ac2e6000,0,2) at uvm_fault+0x1a2 sys/uvm/uvm_fault.c:608
upageflttrap(ffff800035baacf0,36ac2e6cf8) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff800035baacf0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x6f8d720b0780, 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(fffffd806f1ed0a0,9,0) at witness_checkorder+0x1047
rw_enter(fffffd806f1ed090,1) at rw_enter+0x122
rrw_enter(fffffd806f1ed090,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd805f34d6c0,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd805f34d6c0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564
vfs_lookup(ffff800034790e18) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
namei(ffff800034790e18) at namei+0x7aa sys/kern/vfs_lookup.c:250
unp_connect(ffff800010fdd768,fffffd8077479900,ffff8000ffff1c00) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868
uipc_dgram_send(ffff800010fdd768,fffffd806a1a4f00,fffffd8077479900,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607
sosend(ffff800010fdd768,fffffd8077479900,ffff8000347910a8,0,0,0) at sosend+0xa40
sendit(ffff8000ffff1c00,4,ffff800034791220,0,ffff8000347912e0) at sendit+0x721 sys/kern/uipc_syscalls.c:786
sys_sendmsg(ffff8000ffff1c00,ffff800034791390,ffff8000347912e0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604
syscall(ffff800034791390) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff800034791390) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd9e1e880a50, count: -15