netdev - Re: [PATCH net-next] mm/page_pool: catch page

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Date: Sun, 26 Nov 2023 15:20:25 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Jesper Dangaard Brouer <hawk@...nel.org>
Cc: netdev@...r.kernel.org, kuba@...nel.org, vbabka@...e.cz,
 bpf@...r.kernel.org, eric.dumazet@...il.com, davem@...emloft.net,
 pabeni@...hat.com, linux-mm@...ck.org, akpm@...ux-foundation.org,
 mgorman@...hsingularity.net, willy@...radead.org, kernel-team@...udflare.com
Subject: Re: [PATCH net-next] mm/page_pool: catch page_pool memory leaks

Hello:

This patch was applied to netdev/net-next.git (main)
by David S. Miller <davem@...emloft.net>:

On Fri, 24 Nov 2023 11:16:52 +0100 you wrote:
> Pages belonging to a page_pool (PP) instance must be freed through the
> PP APIs in-order to correctly release any DMA mappings and release
> refcnt on the DMA device when freeing PP instance. When PP release a
> page (page_pool_release_page) the page->pp_magic value is cleared.
> 
> This patch detect a leaked PP page in free_page_is_bad() via
> unexpected state of page->pp_magic value being PP_SIGNATURE.
> 
> [...]

Here is the summary with links:
  - [net-next] mm/page_pool: catch page_pool memory leaks
    https://git.kernel.org/netdev/net-next/c/dba1b8a7ab68

You are awesome, thank you!
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