uvm_fault(fffffd8066113028,7a687b46000,0,2) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:700
upageflttrap(ffff800033c09390,7a687b46000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff800033c09390) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x720bc163f4e0, count: -11
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(fffffd8071d326f0,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd8071d326d8,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd8071d326d8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd805d7e4a30,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
vn_lock(fffffd805d7e4a30,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_getcwd_common(fffffd805d7e4a30,fffffd805d7e4448,0,0,200,0,4179a832d47939e4) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd805d7e4a30,fffffd805d7e4448,ffff80002a2df4f8) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694
unp_externalize(fffffd800b75b400,33,0) at unp_externalize+0x26f sys/kern/uipc_usrreq.c:1090
soreceive(ffff800010fd0370,ffff80003c465b08,ffff80003c465ab8,0,ffff80003c465af0,ffff80003c465c7c,6ab8e6bac8867115) at soreceive+0xc24 sys/kern/uipc_socket.c:1009
recvit(ffff80002a2df4f8,6,ffff80003c465c50,0,ffff80003c465d00) at recvit+0x40b sys/kern/uipc_syscalls.c:1078
sys_recvmsg(ffff80002a2df4f8,ffff80003c465db0,ffff80003c465d00) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878
syscall(ffff80003c465db0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c465db0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2d358003be0, count: -14