Return-path: Received: from mail.candelatech.com ([208.74.158.172]:43814 "EHLO ns3.lanforge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753748Ab3JVWXA (ORCPT ); Tue, 22 Oct 2013 18:23:00 -0400 Message-ID: <5266FAAD.3010800@candelatech.com> (sfid-20131023_002304_111253_9D6467EC) Date: Tue, 22 Oct 2013 15:22:37 -0700 From: Ben Greear MIME-Version: 1.0 To: ath10k@lists.infradead.org, "linux-wireless@vger.kernel.org" Subject: Re: ath10k hits warning in sta_info.c:839. References: <5266C321.7000103@candelatech.com> In-Reply-To: <5266C321.7000103@candelatech.com> Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: On 10/22/2013 11:25 AM, Ben Greear wrote: > Kernel is stock 'ath' tree, with small printk to debug an ath10k > crash. > > This is FYI for now...will be looking at other ath10k crash bugs > before digging into this tone. > > Setup is 2 stations trying to associate to same AP, which causes > endless failures and firmware crashes. Good for chasing bugs :) > > > DMAR:[fault reason 05] PTE Write access is not set > dmar: DRHD: handling fault status reg 3 > dmar: DMAR:[DMA Write] Request device [05:00.0] fault addr ffd52000 > DMAR:[fault reason 05] PTE Write access is not set > dmar: DRHD: handling fault status reg 3 > dmar: DMAR:[DMA Write] Request device [05:00.0] fault addr ffd52000 > DMAR:[fault reason 05] PTE Write access is not set > > sta300: authentication with 00:03:83:3d:30:aa timed out > [root@ct523-9292 ~]# ath10k: Failed to delete peer: 00:03:83:3d:30:aa for VDEV: 1 > ath10k: WMI vdev stop failed: ret -108 > ------------[ cut here ]------------ > WARNING: CPU: 1 PID: 6 at /mnt/sda/home/greearb/git/ath/net/mac80211/sta_info.c:839 __sta_info_destroy+0x12) > Modules linked in: nf_nat_ipv4 nf_nat veth 8021q garp stp mrp llc macvlan pktgen lockd f71882fg coretemp hw] I think this may be a result of whatever bug or limitation caused the firmware to error and/or crash when adding a second station VIF and trying to associate it to the same AP. Probably not a problem with the rest of the wifi stacks. Thanks, Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com