No, those swap_free and swap_dup errors appear when a page table has been
corrupted, and we don't swap out page tables themselves, just the pages
they point to. There's no reason to suspect the swap device at all.
> however, the BUG is still there, that is for sure ...
>
> It'd also help to know your kernel version
The kernel version would help to identify the page_alloc.c:145 BUG.
But it's likely to correspond to freeing an impossible or already-freed
page, because of the corrupted page table (odd numbered corruption looks
like a valid page, even numbered corruption looks like a swap entry).
Sorry, I've no guess to make on what might be corrupting this memory.
Hugh
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