linux-kernel - Re: [GIT] Networking

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Message-ID: <CA+55aFxThzV3myrHv0XZbubEdGhg5=rGE6dK=+L1ddc9sufdCQ@mail.gmail.com>
Date:	Wed, 18 May 2016 11:45:06 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	"Coelho, Luciano" <luciano.coelho@...el.com>
Cc:	"reinoudkoornstra@...il.com" <reinoudkoornstra@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linuxwifi <linuxwifi@...el.com>,
	"Berg, Johannes" <johannes.berg@...el.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"kvalo@...eaurora.org" <kvalo@...eaurora.org>,
	"egrumbach@...il.com" <egrumbach@...il.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"Grumbach, Emmanuel" <emmanuel.grumbach@...el.com>
Subject: Re: [GIT] Networking

On Wed, May 18, 2016 at 7:23 AM, Coelho, Luciano
<luciano.coelho@...el.com> wrote:
>
> I can confirm that 4.6 contains the same bug.  And reverting the patch
> I mentioned does solve the problem...
>
> The same patch works fine in our internal tree.  I'll have to figure
> out together with Emmanuel what the problem actually is.

Hmm.

>From what I can tell, there's a merge bug in commit 909b27f70643,
where David seems to have lost some of the changes to
iwl_mvm_set_tx_cmd().

The reason seems to be a conflict with d8fe484470dd, where David
missed the fact that "info->driver_data[0]" had become
"skb_info->driver_data[0]", and then he removed the skb_info because
it was unused.

I do not know if that's the reason for the problem I see. But I will test.

David, do you happen to recall that merge conflict? I think you must
have removed that "skb_info" variable declaration and initialization
manually (due to the "unused variable" warning, which in turn was due
to the incorrect merge of the actual conflict), because I think git
would have merged that line into the result.

                  Linus