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Date:   Fri, 02 Sep 2022 12:10:16 +0000
To:     Eric Dumazet <>
Subject: Re: [PATCH net] tcp: TX zerocopy should not sense pfmemalloc status


This patch was applied to netdev/net.git (master)
by David S. Miller <>:

On Wed, 31 Aug 2022 23:38:09 +0000 you wrote:
> We got a recent syzbot report [1] showing a possible misuse
> of pfmemalloc page status in TCP zerocopy paths.
> Indeed, for pages coming from user space or other layers,
> using page_is_pfmemalloc() is moot, and possibly could give
> false positives.
> [...]

Here is the summary with links:
  - [net] tcp: TX zerocopy should not sense pfmemalloc status

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