uvm_fault(fffffd800e84b5d8,1b2e724000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80003c3ee970,1b2e724000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c3ee970) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x76c057001970, 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(fffffd806e811ef0,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806e811ed8,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806e811ed8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd805f0b6dc0,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
vn_lock(fffffd805f0b6dc0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:576
vfs_getcwd_common(fffffd805f0b6dc0,fffffd805f0b6a60,0,0,200,0,bc151b6bf4cf4681) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd805f0b6dc0,fffffd805f0b6a60,ffff80003c3f07f0) at vn_isunder+0x56 sys/kern/vfs_vnops.c:700
unp_externalize(fffffd80799c0c00,33,0) at unp_externalize+0x26f sys/kern/uipc_usrreq.c:1090
soreceive(ffff8000016ae9a8,ffff80003c4271a8,ffff80003c427158,0,ffff80003c427190,ffff80003c42731c,7edeeedbd823edf2) at soreceive+0xc24 sys/kern/uipc_socket.c:1029
recvit(ffff80003c3f07f0,44,ffff80003c4272f0,0,ffff80003c4273a0) at recvit+0x40b sys/kern/uipc_syscalls.c:1078
sys_recvmsg(ffff80003c3f07f0,ffff80003c427450,ffff80003c4273a0) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878
syscall(ffff80003c427450) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c427450) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa8942d5b5f0, count: -14