Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Subject: Re: [PATCH] net/rds: restrict iovecs length for RDS_CMSG_RDMA_ARGS
From:   patchwork-bot+netdevbpf@kernel.org
Message-Id: <161228460753.23213.15174614823787574149.git-patchwork-notify@kernel.org>
Date:   Tue, 02 Feb 2021 16:50:07 +0000
References: <20210201203233.1324704-1-snovitoll@gmail.com>
In-Reply-To: <20210201203233.1324704-1-snovitoll@gmail.com>
To:     Sabyrzhan Tasbolatov <snovitoll@gmail.com>
Cc:     santosh.shilimkar@oracle.com, davem@davemloft.net, kuba@kernel.org,
        netdev@vger.kernel.org, linux-rdma@vger.kernel.org,
        rds-devel@oss.oracle.com, linux-kernel@vger.kernel.org,
        syzbot+1bd2b07f93745fa38425@syzkaller.appspotmail.com
Precedence: bulk

Hello:

This patch was applied to netdev/net.git (refs/heads/master):

On Tue,  2 Feb 2021 02:32:33 +0600 you wrote:
> syzbot found WARNING in rds_rdma_extra_size [1] when RDS_CMSG_RDMA_ARGS
> control message is passed with user-controlled
> 0x40001 bytes of args->nr_local, causing order >= MAX_ORDER condition.
> 
> The exact value 0x40001 can be checked with UIO_MAXIOV which is 0x400.
> So for kcalloc() 0x400 iovecs with sizeof(struct rds_iovec) = 0x10
> is the closest limit, with 0x10 leftover.
> 
> [...]

Here is the summary with links:
  - net/rds: restrict iovecs length for RDS_CMSG_RDMA_ARGS
    https://git.kernel.org/netdev/net/c/a11148e6fcce

You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html