uvm_fault(fffffd806bf7c560,274f054d000,0,2) at uvm_fault+0x159 sys/uvm/uvm_fault.c:605
upageflttrap(ffff800030f74150,274f054d000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff800030f74150) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7a413da16d30, 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:437
witness_checkorder(ffff80000142a028,9,0) at witness_checkorder+0x1b4
rw_enter_write(ffff80000142a018) at rw_enter_write+0x7a sys/kern/kern_rwlock.c:128
unveil_delete_names(ffff80000142a000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102
unveil_destroy(ffff80003729baf0) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183
exit1(ffff8000ffff6cc8,b,0,1) at exit1+0x60f sys/kern/kern_exit.c:233
sys_exit(ffff8000ffff6cc8,ffff8000363a3b90,ffff8000363a3ae0) at sys_exit+0x1a
syscall(ffff8000363a3b90) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff8000363a3b90) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7270e7b67d30, count: -9