uvm_fault(fffffd806c8f1b88,e86a495e000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:650
upageflttrap(ffff800031ba78b0,e86a495e000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff800031ba78b0) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x70128bb29a70, count: -13
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(fffffd806f000ca0,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806f000c88,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806f000c88,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd805cedab20,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
vn_lock(fffffd805cedab20,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_getcwd_common(fffffd805cedab20,fffffd805ceda898,0,0,200,0,c60a9d9b50c47c79) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd805cedab20,fffffd805ceda898,ffff80003c3da2d0) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694
unp_externalize(fffffd806abf6400,33,0) at unp_externalize+0x26f sys/kern/uipc_usrreq.c:1090
soreceive(ffff80000164ebf8,ffff80003c3d5048,ffff80003c3d4ff8,0,ffff80003c3d5030,ffff80003c3d51bc,ed50d640cfc9510c) at soreceive+0xc24 sys/kern/uipc_socket.c:1029
recvit(ffff80003c3da2d0,5,ffff80003c3d5190,0,ffff80003c3d5240) at recvit+0x40b sys/kern/uipc_syscalls.c:1078
sys_recvmsg(ffff80003c3da2d0,ffff80003c3d52f0,ffff80003c3d5240) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878
syscall(ffff80003c3d52f0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c3d52f0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x62086d87b0, count: -14