uvm_fault(fffff4806c6b8018,86f28ca1000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:650
upageflttrap(ffff80002ef86870,86f28ca1000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002ef86870) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x75c143500c50, 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(fffff4807399dc80,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffff4807399dc68,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffff4807399dc68,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffff480660ff7b8,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
vn_lock(fffff480660ff7b8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:576
vfs_getcwd_common(fffff480660ff7b8,fffff48060ff2018,0,0,200,0,76fea8ab0d3920e7) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffff480660ff7b8,fffff48060ff2018,ffff80003c3ca7f0) at vn_isunder+0x56 sys/kern/vfs_vnops.c:700
unp_externalize(fffff48068cc3700,33,0) at unp_externalize+0x26f sys/kern/uipc_usrreq.c:1090
soreceive(ffff8000016d5ae0,ffff800038b98998,ffff800038b98948,0,ffff800038b98980,ffff800038b98b0c,5821430e8b685758) at soreceive+0xc24 sys/kern/uipc_socket.c:1029
recvit(ffff80003c3ca7f0,1,ffff800038b98ae0,0,ffff800038b98b90) at recvit+0x40b sys/kern/uipc_syscalls.c:1078
sys_recvmsg(ffff80003c3ca7f0,ffff800038b98c40,ffff800038b98b90) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878
syscall(ffff800038b98c40) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800038b98c40) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x85fef583a0, count: -14