uvm_fault(fffffd807e398d70,110c25c000,0,1) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80002a365130,110c25cc01) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a365130) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x76b0280878e0, count: -14
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(fffffd800b285db0,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd800b285d98,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd800b285d98,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd80678e6a20,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
vn_lock(fffffd80678e6a20,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_getcwd_common(fffffd80678e6a20,fffffd800b039360,0,0,200,0,2daf427ec564ed78) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd80678e6a20,fffffd800b039360,ffff80003c4522d0) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694
unp_externalize(fffffd806f410d00,33,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1090
soreceive(ffff800010fdf798,ffff80002a2bf238,ffff80002a2bf1e8,0,ffff80002a2bf220,ffff80002a2bf3ac,fb55584c061175ec) at soreceive+0xc24 sys/kern/uipc_socket.c:1009
recvit(ffff80003c4522d0,4,ffff80002a2bf380,0,ffff80002a2bf430) at recvit+0x40b sys/kern/uipc_syscalls.c:1072
sys_recvmsg(ffff80003c4522d0,ffff80002a2bf4e0,ffff80002a2bf430) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:872
syscall(ffff80002a2bf4e0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2bf4e0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x27c8fa86f90, count: -14