Something is wrong finding the numa region for that page> Don't you see an error from that printf:
if (!warned) {
printf("uvm_page_numa_lookup: failed, first pg=%p pa=%#"
PRIxPADDR "\n", pg, VM_PAGE_TO_PHYS(pg));
warned = true;
}
If not, perhaps print some information about the address that failed when it fails...
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