Re: [PATCH] net: explicitly clear the sk pointer, when pf->create fails

From: patchwork-bot+netdevbpf
Date: Mon Oct 07 2024 - 19:40:43 EST


Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@xxxxxxxxxx>:

On Thu, 3 Oct 2024 18:01:51 +0100 you wrote:
> We have recently noticed the exact same KASAN splat as in commit
> 6cd4a78d962b ("net: do not leave a dangling sk pointer, when socket
> creation fails"). The problem is that commit did not fully address the
> problem, as some pf->create implementations do not use sk_common_release
> in their error paths.
>
> For example, we can use the same reproducer as in the above commit, but
> changing ping to arping. arping uses AF_PACKET socket and if packet_create
> fails, it will just sk_free the allocated sk object.
>
> [...]

Here is the summary with links:
- net: explicitly clear the sk pointer, when pf->create fails
https://git.kernel.org/netdev/net/c/631083143315

You are awesome, thank you!
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