uvm_fault(fffffd806ef6e7a8,143473a6000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:700
upageflttrap(ffff80003c4d7540,143473a6000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c4d7540) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x728eb3526ac0, 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(fffffd806e09b250,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806e09b238,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806e09b238,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd807463e6d0,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
vn_lock(fffffd807463e6d0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_getcwd_common(fffffd807463e6d0,fffffd807463e0e8,0,0,200,0,9cb2037a440f2f8a) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd807463e6d0,fffffd807463e0e8,ffff80003c448d20) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694
unp_externalize(fffffd805fd8d400,33,0) at unp_externalize+0x26f sys/kern/uipc_usrreq.c:1090
soreceive(ffff8000014a8ee0,ffff80003c46f698,ffff80003c46f648,0,ffff80003c46f680,ffff80003c46f80c,1837ec1952e47e1d) at soreceive+0xc24 sys/kern/uipc_socket.c:1009
recvit(ffff80003c448d20,5,ffff80003c46f7e0,0,ffff80003c46f890) at recvit+0x40b sys/kern/uipc_syscalls.c:1075
sys_recvmsg(ffff80003c448d20,ffff80003c46f940,ffff80003c46f890) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:875
syscall(ffff80003c46f940) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c46f940) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x87ccd104ab0, count: -14