linux-kernel - Re: [PATCH 4.9 00/59] 4.9.139-stable review

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <bf811213-e1ad-d70e-cf9e-57735e359377@linux.ibm.com>
Date:   Thu, 22 Nov 2018 16:07:50 -0200
From:   Murilo Fossa Vicentini <muvic@...ux.ibm.com>
To:     Guenter Roeck <linux@...ck-us.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Cc:     torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
        shuah@...nel.org, patches@...nelci.org,
        ben.hutchings@...ethink.co.uk, lkft-triage@...ts.linaro.org,
        stable@...r.kernel.org,
        Murilo Fossa Vicentini <muvic@...ux.vnet.ibm.com>,
        Michał Mirosław <mirq-linux@...e.qmqm.pl>
Subject: Re: [PATCH 4.9 00/59] 4.9.139-stable review

On 22/11/18 14:33, Guenter Roeck wrote:
> drivers/net/ethernet/ibm/ibmvnic.c: In function 'ibmvnic_xmit':
> drivers/net/ethernet/ibm/ibmvnic.c:789:40: error: implicit declaration 
> of function 'skb_vlan_tag_present'
> 
> Caused by 5f51bb855fa1 ("ibmvnic: fix accelerated VLAN handling").
> Problem is missing include of linux/if_vlan.h, which was added upstream
> with commit 6052d5e2a1961b ("ibmvnic: Insert header on VLAN tagged
> received frame").
> 
> I have no idea if the offending patch fixes 6052d5e2a1961b, if both are
> independent, if both are needed, or if none is needed.
> Copying the authors of both patches.

Both address different parts of the code within the same VLAN 
functionality, patch 5f51bb855fa1 (or upstream e84b47941e15) is making a 
change on the transmit side, and the patch I sent upstream 
(6052d5e2a196) addresses an issue when the system firmware strips the 
VLAN tag on the receive side.

In the context of having proper VLAN support for the ibmvnic driver I 
would say both are needed, although potentially there are other patches 
needed for this functionality to work properly, for example upstream 
commit da75e3b6a029 (ibmvnic: Account for VLAN tag in L2 Header 
descriptor) and upstream commit 8dff66cc4195 (ibmvnic: Account for VLAN 
tag in L2 Header descriptor).

Best regards,
Murilo Vicentini