uvm_fault(fffffd80690e1d78,5c9ce580000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:656
upageflttrap(ffff8000307e8d60,5c9ce580000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff8000307e8d60) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7a4be27cb410, 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(fffffd806e145818,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806e145800,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806e145800,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd8062c51bd8,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
vn_lock(fffffd8062c51bd8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_getcwd_common(fffffd8062c51bd8,fffffd8062c516c8,0,0,200,0,4d23a87c033fadcf) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd8062c51bd8,fffffd8062c516c8,ffff8000ffff2018) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694
unp_externalize(fffffd80671b1300,f0,0) at unp_externalize+0x26f sys/kern/uipc_usrreq.c:1090
soreceive(ffff800001635b60,ffff80003541c548,ffff80003541c4f8,0,ffff80003541c530,ffff80003541c6bc,2b3ce9c5fe12c49c) at soreceive+0xc24 sys/kern/uipc_socket.c:1009
recvit(ffff8000ffff2018,6,ffff80003541c690,0,ffff80003541c740) at recvit+0x40b sys/kern/uipc_syscalls.c:1078
sys_recvmsg(ffff8000ffff2018,ffff80003541c7f0,ffff80003541c740) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878
syscall(ffff80003541c7f0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003541c7f0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x5c9d59baf80, count: -14