uvm_fault(fffffd8064d063f8,be95018a000,0,4) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80002a336f50,be95018ab50) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a336f50) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x745331ca4a20, 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(fffffd805ab960f0,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd805ab960d8,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd805ab960d8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd806ce136d8,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
vn_lock(fffffd806ce136d8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_getcwd_common(fffffd806ce136d8,fffffd806517b9a0,0,0,200,0,43e69c99455d2530) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd806ce136d8,fffffd806517b9a0,ffff80003c4b02c8) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694
unp_externalize(fffffd805ec83100,33,0) at unp_externalize+0x26f sys/kern/uipc_usrreq.c:1090
soreceive(ffff800010fd43e0,ffff80002a3db4f8,ffff80002a3db4a8,0,ffff80002a3db4e0,ffff80002a3db66c,e182bb23161d6c8f) at soreceive+0xc24 sys/kern/uipc_socket.c:1009
recvit(ffff80003c4b02c8,4,ffff80002a3db640,0,ffff80002a3db6f0) at recvit+0x40b sys/kern/uipc_syscalls.c:1078
sys_recvmsg(ffff80003c4b02c8,ffff80002a3db7a0,ffff80002a3db6f0) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878
syscall(ffff80002a3db7a0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a3db7a0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb849a492da0, count: -14