uvm_fault(fffffd805c67a1f0,87f53b00000,0,1) at uvm_fault+0x1ee sys/uvm/uvm_fault.c:691
upageflttrap(ffff8000370c2eb0,87f53b00000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff8000370c2eb0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7503296bd0a0, 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:438
witness_checkorder(fffffd80687fb3e8,9,0) at witness_checkorder+0x1047
rw_do_enter_write(fffffd80687fb3d0,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233
rrw_enter(fffffd80687fb3d0,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616
VOP_LOCK(fffffd806ffff510,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd806ffff510,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vget(fffffd806ffff510,2001) at vget+0x2bd sys/kern/vfs_subr.c:694
ktrwriteraw(ffff80002a39cf78,fffffd806ffff510,fffffd807f7d2410,ffff80003c5d47a0,ffff80003c5d4780) at ktrwriteraw+0x172 sys/kern/kern_ktrace.c:688
ktrnamei(ffff80002a39cf78,ffff80002a335400) at ktrnamei+0x148 sys/kern/kern_ktrace.c:222
namei(ffff80003c5d48d8) at namei+0x2a2 sys/kern/vfs_lookup.c:170
unp_connect(ffff8000015ed6d8,fffffd807a669000,ffff80002a39cf78) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868
uipc_dgram_send(ffff8000015ed6d8,fffffd806953a000,fffffd807a669000,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607
sosend(ffff8000015ed6d8,fffffd807a669000,ffff80003c5d4b58,0,0,0) at sosend+0x804
sendit(ffff80002a39cf78,4,ffff80003c5d4cd0,0,ffff80003c5d4d90) at sendit+0x721 sys/kern/uipc_syscalls.c:779
sys_sendmsg(ffff80002a39cf78,ffff80003c5d4e40,ffff80003c5d4d90) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:597
syscall(ffff80003c5d4e40) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c5d4e40) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x13318f7b7d0, count: -17