Re: [PATCH] mm, swap: ratelimit bad swap entry reports

On 8/18/26 11:03, Breno Leitao wrote:
> A corrupt page table hands the same bogus entry to get_swap_device() on
> every access to the mapping, and every rejection is logged. One machine
> logged 6185620 copies of the same line in a few hours.
> 
> swap_dup_entry_direct() prints the same message from the fork path, once
> per call: the WARN_ON_ONCE() guarding it warns once, the pr_err() inside
> does not.
> 
> Rate limit all three prints.
> 
> Cc: [email protected]
> Fixes: 23b230ba8ac3 ("mm/swap: print bad swap offset entry in get_swap_device")
> Reviewed-by: Barry Song <[email protected]>
> Reviewed-by: Nhat Pham <[email protected]>
> Acked-by: Kairui Song <[email protected]>
> Signed-off-by: Breno Leitao <[email protected]>
> ---

Acked-by: David Hildenbrand (Arm) <[email protected]>

-- 
Cheers,

David