netdev - Re: [PATCH v3 net] netlink: Use copy_to_user() for optval in netlink

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Date:   Tue, 25 Apr 2023 01:10:18 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Kuniyuki Iwashima <kuniyu@...zon.com>
Cc:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, kaber@...sh.net, pablo@...filter.org,
        christophe-h.ricard@...com, johannes.berg@...el.com,
        dsahern@...il.com, kuni1840@...il.com, netdev@...r.kernel.org,
        bspencer@...ckberry.com
Subject: Re: [PATCH v3 net] netlink: Use copy_to_user() for optval in
 netlink_getsockopt().

Hello:

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

On Fri, 21 Apr 2023 11:52:55 -0700 you wrote:
> Brad Spencer provided a detailed report [0] that when calling getsockopt()
> for AF_NETLINK, some SOL_NETLINK options set only 1 byte even though such
> options require at least sizeof(int) as length.
> 
> The options return a flag value that fits into 1 byte, but such behaviour
> confuses users who do not initialise the variable before calling
> getsockopt() and do not strictly check the returned value as char.
> 
> [...]

Here is the summary with links:
  - [v3,net] netlink: Use copy_to_user() for optval in netlink_getsockopt().
    https://git.kernel.org/netdev/net/c/d913d32cc270

You are awesome, thank you!
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