uvm_fault(fffffd806bf2cd38,4e3e9370000,0,1) at uvm_fault+0x1ee sys/uvm/uvm_fault.c:700
upageflttrap(ffff80003c40e3b0,4e3e9370000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80003c40e3b0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x70f74458d120, count: -12
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(fffffd806f98e410,9,0) at witness_checkorder+0x10fb sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806f98e3f8,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233
rrw_enter(fffffd806f98e3f8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:606
VOP_LOCK(fffffd806008a980,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527
vn_lock(fffffd806008a980,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_getcwd_common(fffffd806008a980,fffffd806008a8a8,0,0,200,0,4c3acccc5ce0d25e) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd806008a980,fffffd806008a8a8,ffff80003c41af90) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694
unp_externalize(fffffd806e88c100,ec,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1086
soreceive(ffff800010fdd3f8,ffff80003c48d078,ffff80003c48d028,0,ffff80003c48d068,ffff80003c48d1ec,75a62287767bead5) at soreceive+0xc73 sys/kern/uipc_socket.c:1020
recvit(ffff80003c41af90,5,ffff80003c48d1c0,0,ffff80003c48d270) at recvit+0x40a sys/kern/uipc_syscalls.c:1072
sys_recvmsg(ffff80003c41af90,ffff80003c48d320,ffff80003c48d270) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:872
syscall(ffff80003c48d320) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c48d320) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4e3844c6cc0, count: -14