uvm_fault(fffffd806bfad738,e35857e4000,0,2) at uvm_fault+0x106 sys/uvm/uvm_fault.c:668
upageflttrap(ffff80003c661340,e35857e4960) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80003c661340) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x704855797870, 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:437
witness_checkorder(fffffd806be4cab8,9,0) at witness_checkorder+0x1047
rw_do_enter_write(fffffd806be4caa0,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233
rrw_enter(fffffd806be4caa0,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616
VOP_LOCK(fffffd8067052538,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd8067052538,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_getcwd_common(fffffd8067052538,fffffd8067052610,0,0,200,0,30a64f24e3d03eaa) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd8067052538,fffffd8067052610,ffff80003c5a4028) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694
unp_externalize(fffffd8066ff8600,ec,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1086
soreceive(ffff80000128e2c0,ffff80003c5b7588,ffff80003c5b7538,0,ffff80003c5b7578,ffff80003c5b76fc,6866024786ffad8d) at soreceive+0xc73 sys/kern/uipc_socket.c:1015
recvit(ffff80003c5a4028,5,ffff80003c5b76d0,0,ffff80003c5b7780) at recvit+0x40a sys/kern/uipc_syscalls.c:1072
sys_recvmsg(ffff80003c5a4028,ffff80003c5b7830,ffff80003c5b7780) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:872
syscall(ffff80003c5b7830) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c5b7830) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd40db67c540, count: -14