uvm_fault(fffffd805e09f9b0,b2ca811000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:700
upageflttrap(ffff80002a2e1910,b2ca811000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a2e1910) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x790b552edac0, 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(fffffd806bc13eb8,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806bc13ea0,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806bc13ea0,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd8062e58200,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
vn_lock(fffffd8062e58200,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_getcwd_common(fffffd8062e58200,fffffd8062e58200,0,0,200,0,13f0bfa6cb84a7d3) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd8062e58200,fffffd8062e58200,ffff800032408550) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694
unp_externalize(fffffd8062cf9e00,33,80) at unp_externalize+0x26f sys/kern/uipc_usrreq.c:1090
soreceive(ffff800001425790,ffff80002f7fb908,ffff80002f7fb8b8,0,ffff80002f7fb8f0,ffff80002f7fba7c,1bc2eb84253aa43c) at soreceive+0xc24 sys/kern/uipc_socket.c:1009
recvit(ffff800032408550,4,ffff80002f7fba50,0,ffff80002f7fbb00) at recvit+0x40b sys/kern/uipc_syscalls.c:1078
sys_recvmsg(ffff800032408550,ffff80002f7fbbb0,ffff80002f7fbb00) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878
syscall(ffff80002f7fbbb0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002f7fbbb0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2741e0b4ef0, count: -14