From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Borkmann <daniel@iogearbox.net>
Subject: Re: [PATCH] trace: reenable preemption if we modify the ip
Date: Sun, 17 Dec 2017 20:49:25 +0100
Message-ID: <d6b68cc7-edb0-6d30-81a5-7f4e33d4e3bf@iogearbox.net>
References: <1513392177-10298-1-git-send-email-josef@toxicpanda.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
Cc: Josef Bacik <jbacik@fb.com>
To: Josef Bacik <josef@toxicpanda.com>, netdev@vger.kernel.org,
        mhiramat@kernel.org, ast@kernel.org, darrick.wong@oracle.com,
        linux-kernel@vger.kernel.org
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <1513392177-10298-1-git-send-email-josef@toxicpanda.com>
Content-Language: en-US
Sender: linux-kernel-owner@vger.kernel.org
List-Id: netdev.vger.kernel.org

On 12/16/2017 03:42 AM, Josef Bacik wrote:
> From: Josef Bacik <jbacik@fb.com>
> 
> Things got moved around between the original bpf_override_return patches
> and the final version, and now the ftrace kprobe dispatcher assumes if
> you modified the ip that you also enabled preemption.  Make a comment of
> this and enable preemption, this fixes the lockdep splat that happened
> when using this feature.
> 
> Signed-off-by: Josef Bacik <jbacik@fb.com>

Applied to bpf-next with Fixes tag, thanks Josef.