From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from investici.nine.ch ([217.150.252.179]:47871 "EHLO confino.investici.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751807Ab2DVS2h (ORCPT ); Sun, 22 Apr 2012 14:28:37 -0400 Received: from [217.150.252.179] (confino [217.150.252.179]) (Authenticated sender: ordex@autistici.org) by localhost (Postfix) with ESMTPSA id D046CC8E53 for ; Sun, 22 Apr 2012 18:28:34 +0000 (UTC) Date: Sun, 22 Apr 2012 20:29:29 +0200 From: Antonio Quartulli To: linux-wireless@vger.kernel.org Subject: iwlwifi warn_slowpath with 3.* Message-ID: <20120422182928.GA2854@ritirata.org> (sfid-20120422_202844_231348_64CE4858) MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="ikeVEW9yuYc//A+q" Sender: linux-wireless-owner@vger.kernel.org List-ID: --ikeVEW9yuYc//A+q Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hello, since linux-3.0 (I don't remember if it was the case even before), I'm gett= ing this output in dmesg: [ 53.662990] ------------[ cut here ]------------ [ 53.663016] WARNING: at drivers/iommu/intel-iommu.c:2911 intel_unmap_page+0x14b/0x180() [ 53.663047] Hardware name: Latitude E5420 [ 53.663066] Driver unmaps unmatched page at PFN ffd1a000 [ 53.663091] Modules linked in: usb_storage hid_cherry usbhid uvcvideo videobuf2_core videodev v4l2_compat_ioctl32 videobuf2_vmalloc videobuf2_mem= ops iwlwifi mac80211 cfg80211 snd_hda_codec_hdmi snd_hda_codec_idt psmouse snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore snd_page_alloc ehci_hcd usbcore usb_common [ 53.663106] Pid: 1852, comm: ifconfig Tainted: G W 3.3.2-pf #1 [ 53.663107] Call Trace: [ 53.663109] [] ? intel_unmap_page+0x70/0x180 [ 53.663113] [] ? warn_slowpath_common+0x7b/0xc0 [ 53.663116] [] ? warn_slowpath_fmt+0x45/0x50 [ 53.663119] [] ? _raw_spin_unlock_irqrestore+0x13/0x40 [ 53.663121] [] ? intel_unmap_page+0x14b/0x180 [ 53.663127] [] ? iwl_trans_rxq_free_rx_bufs+0x4c/0xf0 [iwlwifi] [ 53.663131] [] ? iwl_trans_pcie_start_device+0x17c/0x= df0 [iwlwifi] [ 53.663135] [] ? iwl_load_ucode_wait_alive+0x2d/0x3a0 [iwlwifi] [ 53.663138] [] ? get_parent_ip+0x9/0x20 [ 53.663140] [] ? get_parent_ip+0x9/0x20 [ 53.663142] [] ? sub_preempt_count+0x87/0xb0 [ 53.663144] [] ? _raw_spin_unlock_irqrestore+0x13/0x40 [ 53.663147] [] ? iwlagn_mac_start+0x12e/0x1f0 [iwlwif= i] [ 53.663154] [] ? ieee80211_do_open+0x276/0x6a0 [mac80= 211] [ 53.663158] [] ? ieee80211_check_concurrent_iface+0x22/0x1a0 [mac80211] [ 53.663162] [] ? __dev_open+0x86/0xd0 [ 53.663164] [] ? __dev_change_flags+0x9a/0x180 [ 53.663166] [] ? dev_change_flags+0x20/0x70 [ 53.663169] [] ? devinet_ioctl+0x5bf/0x750 [ 53.663172] [] ? sock_do_ioctl+0x29/0x60 [ 53.663174] [] ? sock_ioctl+0x63/0x2b0 [ 53.663177] [] ? do_vfs_ioctl+0x8e/0x4f0 [ 53.663179] [] ? sys_ioctl+0x98/0xa0 [ 53.663181] [] ? system_call_fastpath+0x16/0x1b [ 53.663183] ---[ end trace e93713a9d40cd06e ]--- I tried to dig a bit but I didn't really understand how this slowpath warni= ng should be interpreted. However the card seems to work fine. I'm experiencing some kernel panic from time to time, but I cannot understand if it is really realted to this issue or not. I hope this output makes sense for someone. Best regards, --=20 Antonio Quartulli =2E.each of us alone is worth nothing.. Ernesto "Che" Guevara --ikeVEW9yuYc//A+q Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iQEcBAEBAgAGBQJPlE4IAAoJEFMQTLzJFOZFs4sIAIM2WFXNvknP1HiHjvco7g6w k5pnxiOLl/sm9UDGi/OHwastnAPlHUKG529ECMVxGUXJp7rp1UavqJ8M0tDs7UlD lRGC/G/lR8L1VWVzqZ1ux90VXpQKLbYlTN30kag61EtGasKdCqn8E7HRfKteIOzF YQM87zRaIZ+sv8uF3XnT433sxjRFC/2BGxyM6SKrtbYrUlh3KMuAGGrgR+60kstT z4YnpqmegHjFL03s5GUDUa7Vq5mLnK99LlnYclsjgVIMesHqif/WsZViiGzitziD zj/3Qk89sNujBsUJLeGoHuXpycvXKSCWFgqyG6Gnb9u9noBRaf/P4K8n6YRheQk= =QEnQ -----END PGP SIGNATURE----- --ikeVEW9yuYc//A+q--