Return-path: Received: from mx1.redhat.com ([209.132.183.28]:25540 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756320Ab3A1OJF (ORCPT ); Mon, 28 Jan 2013 09:09:05 -0500 Message-ID: <5106867F.80309@redhat.com> (sfid-20130128_150926_865484_D70ED926) Date: Mon, 28 Jan 2013 15:09:03 +0100 From: Zdenek Kabelac MIME-Version: 1.0 To: LKML , linux-wireless@vger.kernel.org Subject: iwl3945 prints warning Content-Type: text/plain; charset=ISO-8859-2; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: Hi I'm getting tthis warning printed with current 3.8-rc kernel My hw is Lenovo T61. [ 5.920284] iwl3945 0000:03:00.0: loaded firmware version 15.32.2.9 [ 5.976605] systemd[1]: Started NFS file locking service.. [ 5.982624] NFSD: starting 90-second grace period (net ffffffff81aa08c0) [ 5.987930] ------------[ cut here ]------------ [ 5.988026] WARNING: at lib/dma-debug.c:933 check_unmap+0x4ae/0x9a0() [ 5.988111] Hardware name: 6464CTO [ 5.988194] iwl3945 0000:03:00.0: DMA-API: device driver failed to check map error[device address=0x00000000bb7a7800] [size=4096 bytes] [mapped as page] [ 5.988286] Modules linked in: [ 5.988411] rfcomm bnep btusb bluetooth snd_hda_codec_analog iTCO_wdt iTCO_vendor_support arc4 hid_generic iwl3945 iwlegacy mac80211 snd_hda_intel snd_hda_codec coretemp snd_seq psmouse i2c_i801 serio_raw microcode i2c_core snd_seq_device r852 sm_common cfg80211 nand snd_pcm nand_ecc r592 nand_ids mtd memstick lpc_ich mfd_core e1000e thinkpad_acpi snd_page_alloc ehci_pci snd_timer ehci_hcd nvram wmi snd soundcore evdev binfmt_misc usbhid hid loop vhost_net tun kvm_intel kvm nfsd exportfs auth_rpcgss nfs_acl lockd sunrpc dm_mod pcmcia sr_mod cdrom sdhci_pci sdhci mmc_core yenta_socket uhci_hcd usbcore usb_common video backlight autofs4 [ 5.992114] Pid: 635, comm: libvirtd Not tainted 3.8.0-rc5-00006-g0e5e62f #119 [ 5.992177] Call Trace: [ 5.992177] [] warn_slowpath_common+0x70/0xa0 [ 5.992177] [] warn_slowpath_fmt+0x4c/0x50 [ 5.992177] [] check_unmap+0x4ae/0x9a0 [ 5.992177] [] debug_dma_unmap_page+0x5f/0x70 [ 5.992177] [] ? unmap_single+0x20/0x30 [ 5.992177] [] il3945_irq_tasklet+0x392/0x710 [iwl3945] [ 5.992177] [] tasklet_action+0x98/0x220 [ 5.992177] [] __do_softirq+0xdf/0x3f0 [ 5.992177] [] call_softirq+0x1c/0x30 [ 5.992177] [] do_softirq+0x65/0xa0 [ 5.992177] [] irq_exit+0xc5/0xd0 [ 5.992177] [] do_IRQ+0x56/0xc0 [ 5.992177] [] ? __do_page_fault+0x20c/0x5b0 [ 5.992177] [] common_interrupt+0x6f/0x6f [ 5.992177] [] ? lock_release+0xae/0x300 [ 5.992177] [] up_read+0x1f/0x40 [ 5.992177] [] __do_page_fault+0x20c/0x5b0 [ 5.992177] [] ? trace_hardirqs_on_caller+0x115/0x1a0 [ 5.992177] [] ? error_sti+0x5/0x6 [ 5.992177] [] ? trace_hardirqs_off_thunk+0x3a/0x3c [ 5.992177] [] do_page_fault+0xe/0x10 [ 5.992177] [] page_fault+0x22/0x30 [ 5.992177] ---[ end trace c0d06cdbbf41cb39 ]--- [ 5.992177] Mapped at: [ 5.992177] [] debug_dma_map_page+0x91/0x140 [ 5.992177] [] il3945_rx_allocate+0xaa/0x270 [iwl3945] [ 5.992177] [] il3945_rx_replenish+0x1b/0x50 [iwl3945] [ 5.992177] [] il3945_hw_nic_init+0x1a1/0x5e0 [iwl3945] [ 5.992177] [] __il3945_up+0xc0/0x2d0 [iwl3945] Zdenek