uvm_fault(fffffd806becf3a0,110c255000,0,1) at uvm_fault+0x2f0 sys/uvm/uvm_fault.c:637
upageflttrap(ffff8000371d55c0,110c255564) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff8000371d55c0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x70b1e3bf1bd0, 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:437
witness_checkorder(fffffd806bcf22c0,9,0) at witness_checkorder+0x1047
rw_enter(fffffd806bcf22b0,1) at rw_enter+0x122
rrw_enter(fffffd806bcf22b0,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd8078b7b2e0,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd8078b7b2e0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564
vfs_getcwd_common(fffffd8078b7b2e0,fffffd8078b7b490,0,0,200,0,222b065d3896c167) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd8078b7b2e0,fffffd8078b7b490,ffff8000ffffd1c8) at vn_isunder+0x56 sys/kern/vfs_vnops.c:688
unp_externalize(fffffd806e97c500,ec,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1094
soreceive(ffff800010fdda58,ffff800037296cf8,ffff800037296ca8,0,ffff800037296ce8,ffff800037296e6c,716b38e4b5689688) at soreceive+0xd3e sys/kern/uipc_socket.c:1090
recvit(ffff8000ffffd1c8,5,ffff800037296e40,0,ffff800037296ef0) at recvit+0x40a sys/kern/uipc_syscalls.c:1079
sys_recvmsg(ffff8000ffffd1c8,ffff800037296fa0,ffff800037296ef0) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:879
syscall(ffff800037296fa0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff800037296fa0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x25cf925b030, count: -14