Thread (4 messages) 4 messages, 2 authors, 20d ago

Re: [PATCH net-next 0/2] net: do not warn on best-effort skb allocation failures

From: patchwork-bot+netdevbpf@kernel.org
Date: 2026-07-01 00:20:36
Also in: lkml

Hello:

This series was applied to netdev/net-next.git (main)
by Jakub Kicinski [off-list ref]:

On Mon, 29 Jun 2026 04:45:39 -0700 you wrote:
Both netconsole and netpoll keep a small preallocated pool of skbs
(skb_pool) so they can still get a buffer under memory pressure.

On the hot path they first attempt a normal GFP_ATOMIC allocation and only
fall back to the pool when that fails, keeping the pool as a last resort.

This is where the problem happens. If alloc_skb() fails, we now have
more than 100 message coming from the page=0 failure, which consumes the
scarce pool of skb, making the real issue disappear.

[...]
Here is the summary with links:
  - [net-next,1/2] netconsole: do not warn when the best-effort skb allocation fails
    https://git.kernel.org/netdev/net-next/c/09f7a613a14f
  - [net-next,2/2] netpoll: do not warn when the best-effort pool refill fails
    https://git.kernel.org/netdev/net-next/c/84c0ff1efb62

You are awesome, thank you!
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