Return-path: Received: from mail-wg0-f44.google.com ([74.125.82.44]:45979 "EHLO mail-wg0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932518Ab2EUJ3E convert rfc822-to-8bit (ORCPT ); Mon, 21 May 2012 05:29:04 -0400 Received: by wgbdr13 with SMTP id dr13so4780999wgb.1 for ; Mon, 21 May 2012 02:29:02 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <4FB9EF2E.3000900@opensuse.org> References: <4FB7F52D.7020904@opensuse.org> <4FB9EF2E.3000900@opensuse.org> Date: Mon, 21 May 2012 12:29:02 +0300 Message-ID: (sfid-20120521_112910_707864_97D930A4) Subject: Re: iwlwifi: Driver unmaps unmatched page at PFN ffe70000 From: Emmanuel Grumbach To: =?ISO-8859-1?Q?Cristian_Rodr=EDguez?= Cc: linux-wireless@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: >> >> On Sat, May 19, 2012 at 10:31 PM, Cristian Rodr?guez >> ?wrote: >>> >>> >>> On resume, I get the following warning >>> >>> [43265.744510] ------------[ cut here ]------------ >>> [43265.744516] WARNING: at >>> /usr/src/linux-3.4.0-rc7-2/drivers/iommu/intel-iommu.c:2922 >>> intel_unmap_page+0x15d/0x1c0() >>> [43265.744518] Hardware name: Dell System XPS 15Z >>> [43265.744519] Driver unmaps unmatched page at PFN ffe70000 >>> [43265.744520] Modules linked in: fuse rfcomm af_packet bnep arc4 iwlwifi >>> btusb bluetooth mac80211 snd_hda_codec_hdmi snd_hda_codec_realtek >>> dell_laptop dcdbas kvm_intel snd_hda_intel snd_hda_codec kvm cfg80211 >>> snd_hwdep uvcvideo snd_pcm snd_timer videobuf2_core snd videodev sr_mod >>> mei(C) edd sg cdrom soundcore videobuf2_vmalloc coretemp rfkill dell_wmi >>> iTCO_wdt i2c_i801 videobuf2_memops microcode snd_page_alloc sparse_keymap >>> battery pcspkr ac iTCO_vendor_support autofs4 sha256_generic dm_crypt >>> dm_mod >>> linear btrfs zlib_deflate libcrc32c nouveau ttm mxm_wmi >>> ghash_clmulni_intel >>> crc32c_intel i915 wmi drm_kms_helper drm i2c_algo_bit xhci_hcd button >>> video >>> aesni_intel cryptd aes_x86_64 fan thermal processor thermal_sys >>> [43265.744560] Pid: 2378, comm: NetworkManager Tainted: G ? ? ? ? C >>> 3.4.0-rc7-2-desktop-test #1 >> >> >> Can you please give a try to this one ? >> >> http://www.spinics.net/lists/linux-wireless/msg90507.html > > > Hi: > > Ok, I applied that patch to this kernel with an slight modification (there > are no txq->entries but txq->skbs on this version) > > the system works, however trying to reproduce this problem again might not > be so easy, according to my logs, this warning has happened only 4 times in > 5 months.. > > if it is not easy to reproduce, then I would recommend to wait until the patch gets merged so that you can get it cleanly without modification.