From mboxrd@z Thu Jan 1 00:00:00 1970 From: Reinoud Koornstra Subject: Re: [GIT] Networking Date: Wed, 18 May 2016 06:51:55 -0600 Message-ID: References: <20160517.151113.367799295750703003.davem@davemloft.net> <1463568714.13625.18.camel@intel.com> <1463575273.13625.23.camel@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Cc: "linux-kernel@vger.kernel.org" , linuxwifi , "torvalds@linux-foundation.org" , "Berg, Johannes" , "akpm@linux-foundation.org" , "kvalo@codeaurora.org" , "egrumbach@gmail.com" , "netdev@vger.kernel.org" , "davem@davemloft.net" , "linux-wireless@vger.kernel.org" , "Grumbach, Emmanuel" To: "Coelho, Luciano" Return-path: In-Reply-To: <1463575273.13625.23.camel@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Wed, May 18, 2016 at 6:41 AM, Coelho, Luciano wrote: > On Wed, 2016-05-18 at 06:20 -0600, Reinoud Koornstra wrote: >> On Wed, May 18, 2016 at 4:51 AM, Coelho, Luciano >> wrote: >> > >> > Hi Emmanuel, Linus, >> > >> > >> > On Wed, 2016-05-18 at 06:37 +0300, Emmanuel Grumbach wrote: >> > > >> > > On Wed, May 18, 2016 at 4:00 AM, Linus Torvalds >> > > wrote: >> > > > >> > > > >> > > > On Tue, May 17, 2016 at 12:11 PM, David Miller > > > > .net >> > > > > >> > > > > wrote: >> > > > > >> > > > > >> > > > > Highlights: >> > > > Lowlights: >> > > > >> > > > 1) the iwlwifi driver seems to be broken >> > > > >> > > > My laptop that uses the intel 7680 iwlwifi module no longer >> > > > connects >> > > > to the network. It fails with a "Microcode SW error detected." >> > > > and >> > > > spews out register state over and over again. >> > > Can we have the register state and the ASSERT / NMI / whatever >> > > that >> > > goes along with it? >> > > This clearly means that the firmware is crashing, but I don't >> > > know >> > > why, >> > > I copied here the lines that I need from another bug with another >> > > device with another firmware, >> > > but the log that we will still explain what I need: >> > I managed to reproduce this bug locally with Linus' master. I'm >> > investigating the cause and I'll let you how it goes. >> I did run the latest git code as well 4.6+ >> iwlwifi went pearshape in my case as well. >> I just updated the microcode as well, it didn't matter. >> 4.6-rc7 works fine and no errors are reported with iwlwifi. >> >> Here's output that might come in handy > > Thanks! That is helpful. > > Since you say that 4.6-rc7 works but 4.6 doesn't, the prime suspect is > commit 5c08b0f5026f ("iwlwifi: mvm: don't override the rate with the > AMSDU len"), which is the only iwlwifi patch between those two > releases. > > Could you try to revert that and see if the error is gone? Will do, since git revert failed I'll revert manually and report back. > > -- > Cheers, > Luca.