linux-hardening - Re: [PATCH v2][next] Bluetooth: L2CAP: Avoid -Wflex-array-member-not-at-end warnings

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Message-ID: <ceb2091f-d36f-419e-8ed6-2165b6842d96@embeddedor.com>
Date: Wed, 27 Mar 2024 23:51:50 -0600
From: "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To: Kees Cook <kees@...nel.org>, Luiz Augusto von Dentz
 <luiz.dentz@...il.com>, "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc: Marcel Holtmann <marcel@...tmann.org>,
 Johan Hedberg <johan.hedberg@...il.com>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH v2][next] Bluetooth: L2CAP: Avoid
 -Wflex-array-member-not-at-end warnings



On 27/03/24 23:28, Kees Cook wrote:
> 
> 
> On March 27, 2024 11:08:33 AM MDT, "Gustavo A. R. Silva" <gustavo@...eddedor.com> wrote:
>> Hi!
>>
>> On 3/27/24 10:55, Luiz Augusto von Dentz wrote:
>>> Hi Gustavo,
>>>
>>> On Wed, Mar 27, 2024 at 12:23 PM Gustavo A. R. Silva
>>> <gustavoars@...nel.org> wrote:
>>>>
>>>> -Wflex-array-member-not-at-end is coming in GCC-14, and we are getting
>>>> ready to enable it globally.
>>>
>>> Which tree is this base on, I just rebased bluetooth-next on top of
>>> net-next but it looks like CI is still failing to build it, so either
>>> we don't have all the dependencies already in net-next or perhaps you
>>> had it submit while the tree had not been updated.
>>
>> This is based off of linux-next.
>>
>> I think net-next is missing this commit in v6.9-rc1:
>>
>> d8e45f2929b9 "overflow: Change DEFINE_FLEX to take __counted_by member")
>>
>> https://git.kernel.org/linus/d8e45f2929b9
> 
> Just FYI, that is in rc1. (I sent it late to avoid a netdev collision.)
> 

Yep.

They haven't pulled all the changes from mainline up to -rc1, yet:

https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/log/

--
Gustavo