uvm_fault(fffffd800efaf208,4bf708d0000,0,1) at uvm_fault+0x198 sys/uvm/uvm_fault.c:685
upageflttrap(ffff80003c445530,4bf708d0f18) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c445530) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x734711b63040, 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:438
witness_checkorder(fffffd806e12eef8,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806e12eee0,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806e12eee0,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd80681b8638,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
vn_lock(fffffd80681b8638,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_getcwd_common(fffffd80681b8638,fffffd8065571eb8,0,0,200,0,a5ee4cc658613889) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd80681b8638,fffffd8065571eb8,ffff800033408fb0) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694
unp_externalize(fffffd805cf1fe00,33,0) at unp_externalize+0x26f sys/kern/uipc_usrreq.c:1090
soreceive(ffff8000016ed518,ffff800030bfb428,ffff800030bfb3d8,0,ffff800030bfb410,ffff800030bfb59c,e60e1e075da1c655) at soreceive+0xc24 sys/kern/uipc_socket.c:1009
recvit(ffff800033408fb0,4,ffff800030bfb570,0,ffff800030bfb620) at recvit+0x40b sys/kern/uipc_syscalls.c:1075
sys_recvmsg(ffff800033408fb0,ffff800030bfb6d0,ffff800030bfb620) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:875
syscall(ffff800030bfb6d0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800030bfb6d0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x27f69c8a0f0, count: -14