Return-path: Received: from magic.merlins.org ([209.81.13.136]:59892 "EHLO mail1.merlins.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750940Ab2IHRBd (ORCPT ); Sat, 8 Sep 2012 13:01:33 -0400 Date: Sat, 8 Sep 2012 10:01:28 -0700 From: Marc MERLIN To: johannes.berg@intel.com, wey-yi.w.guy@intel.com, ilw@linux.intel.com Cc: linux-wireless@vger.kernel.org, netdev@ger.kernel.org Subject: Re: kernel 3.5.2/amd64: iwlwifi 0000:03:00.0: failed to allocate pci memory Message-ID: <20120908170128.GK3347@merlins.org> (sfid-20120908_190214_109241_625AC686) References: <20120908161038.GF3347@merlins.org> <1347122927.1234.849.camel@edumazet-glaptop> <20120904003014.GB6287@merlins.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1347122927.1234.849.camel@edumazet-glaptop> <20120904003014.GB6287@merlins.org> Sender: linux-wireless-owner@vger.kernel.org List-ID: Howdy, I currently rmmod iwlwifi before putting my laptop to sleep and reload it when coming back. Arguably, it's maybe not needed, but from time to time I hit this memory allocation failure below. I realize it's likely a memory fragmentation problem, but I have 8GB and plenty of 'free' space, so I'm hoping that somehow it can be defragmented enough for module loading ot work? My kenrel config options are here http://marc.merlins.org/tmp/config-3.5.2-amd64-preempt-noide-20120731 and this happens on an Lenovo T530 when it works: [ 13.494270] iwlwifi 0000:03:00.0: loaded firmware version 9.221.4.1 build 25532 [ 13.494440] iwlwifi 0000:03:00.0: Detected Intel(R) Centrino(R) Ultimate-N 6300 AGN, REV=0x74 When it doesn't: [856806.443647] cfg80211: Calling CRDA to update world regulatory domain [856806.448428] iwlwifi: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:d [856806.448431] iwlwifi: Copyright(c) 2003-2012 Intel Corporation [856806.448929] cfg80211: World regulatory domain updated: [856806.448931] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [856806.448933] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [856806.448941] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [856806.448942] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [856806.448943] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [856806.448945] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [856806.483929] iwlwifi 0000:03:00.0: pci_resource_len = 0x00002000 [856806.483932] iwlwifi 0000:03:00.0: pci_resource_base = ffffc900057bc000 [856806.483933] iwlwifi 0000:03:00.0: HW Revision ID = 0x3E [856806.484004] iwlwifi 0000:03:00.0: irq 46 for MSI/MSI-X [856806.497476] iwlwifi 0000:03:00.0: loaded firmware version 9.221.4.1 build 25532 [856806.497944] kworker/3:0: page allocation failure: order:5, mode:0xd0 [856806.497948] Pid: 17936, comm: kworker/3:0 Tainted: G W O 3.5.2-amd64-preempt-noide-20120731 #1 [856806.497949] Call Trace: [856806.497959] [] warn_alloc_failed+0x117/0x12c [856806.497963] [] __alloc_pages_nodemask+0x6e3/0x792 [856806.497969] [] ? pfn_to_dma_pte+0x116/0x15e [856806.497976] [] alloc_pages_current+0xcd/0xee [856806.497979] [] __get_free_pages+0x9/0x45 [856806.497982] [] intel_alloc_coherent+0x84/0xe7 [856806.497986] [] ? arch_local_irq_save+0x15/0x1b [856806.497999] [] iwl_ucode_callback+0xa49/0xc0d [iwlwifi] [856806.498006] [] ? _request_firmware_prepare.isra.5+0x1bf/0x1bf [856806.498010] [] request_firmware_work_func+0x81/0xb1 [856806.498014] [] process_one_work+0x16f/0x28e [856806.498018] [] worker_thread+0xce/0x152 [856806.498021] [] ? manage_workers.isra.24+0x16c/0x16c [856806.498024] [] kthread+0x86/0x8e [856806.498029] [] kernel_thread_helper+0x4/0x10 [856806.498032] [] ? kthread_freezable_should_stop+0x3e/0x3e [856806.498034] [] ? gs_change+0x13/0x13 [856806.498036] Mem-Info: [856806.498037] Node 0 DMA per-cpu: [856806.498039] CPU 0: hi: 0, btch: 1 usd: 0 [856806.498041] CPU 1: hi: 0, btch: 1 usd: 0 [856806.498042] CPU 2: hi: 0, btch: 1 usd: 0 [856806.498044] CPU 3: hi: 0, btch: 1 usd: 0 [856806.498045] Node 0 DMA32 per-cpu: [856806.498047] CPU 0: hi: 186, btch: 31 usd: 0 [856806.498048] CPU 1: hi: 186, btch: 31 usd: 0 [856806.498050] CPU 2: hi: 186, btch: 31 usd: 0 [856806.498051] CPU 3: hi: 186, btch: 31 usd: 0 [856806.498052] Node 0 Normal per-cpu: [856806.498054] CPU 0: hi: 186, btch: 31 usd: 0 [856806.498055] CPU 1: hi: 186, btch: 31 usd: 0 [856806.498057] CPU 2: hi: 186, btch: 31 usd: 0 [856806.498058] CPU 3: hi: 186, btch: 31 usd: 0 [856806.498062] active_anon:880341 inactive_anon:274439 isolated_anon:0 [856806.498062] active_file:222778 inactive_file:228271 isolated_file:0 [856806.498062] unevictable:1436 dirty:369 writeback:0 unstable:0 [856806.498062] free:137592 slab_reclaimable:167927 slab_unreclaimable:17618 [856806.498062] mapped:27053 shmem:29116 pagetables:23832 bounce:0 [856806.498065] Node 0 DMA free:15900kB min:132kB low:164kB high:196kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15676kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes [856806.498071] lowmem_reserve[]: 0 3257 7777 7777 [856806.498074] Node 0 DMA32 free:454560kB min:28252kB low:35312kB high:42376kB active_anon:1412512kB inactive_anon:513084kB active_file:333072kB inactive_file:323580kB unevictable:196kB isolated(anon):0kB isolated(file):0kB present:3335900kB mlocked:196kB dirty:108kB writeback:0kB mapped:43284kB shmem:27472kB slab_reclaimable:281024kB slab_unreclaimable:20952kB kernel_stack:4200kB pagetables:27640kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no [856806.498079] lowmem_reserve[]: 0 0 4519 4519 [856806.498083] Node 0 Normal free:79908kB min:39196kB low:48992kB high:58792kB active_anon:2108852kB inactive_anon:584672kB active_file:558040kB inactive_file:589504kB unevictable:5548kB isolated(anon):0kB isolated(file):0kB present:4627820kB mlocked:5548kB dirty:1368kB writeback:0kB mapped:64928kB shmem:88992kB slab_reclaimable:390684kB slab_unreclaimable:49520kB kernel_stack:3496kB pagetables:67688kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no [856806.498088] lowmem_reserve[]: 0 0 0 0 [856806.498090] Node 0 DMA: 1*4kB 1*8kB 1*16kB 0*32kB 2*64kB 1*128kB 1*256kB 0*512kB 1*1024kB 1*2048kB 3*4096kB = 15900kB [856806.498098] Node 0 DMA32: 60562*4kB 25568*8kB 264*16kB 4*32kB 1*64kB 1*128kB 0*256kB 2*512kB 2*1024kB 0*2048kB 0*4096kB = 454408kB [856806.498106] Node 0 Normal: 15497*4kB 861*8kB 162*16kB 79*32kB 22*64kB 4*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 1*4096kB = 80012kB [856806.498115] 660922 total pagecache pages [856806.498116] 180029 pages in swap cache [856806.498118] Swap cache stats: add 7904087, delete 7724058, find 2010810/2392461 [856806.498119] Free swap = 5831292kB [856806.498121] Total swap = 10485756kB [856806.520762] 2057712 pages RAM [856806.520764] 63301 pages reserved [856806.520765] 543630 pages shared [856806.520766] 1544767 pages non-shared [856806.520771] iwlwifi 0000:03:00.0: failed to allocate pci memory It will typically fix itself and work again later. Any ideas? Thanks, Marc -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems .... .... what McDonalds is to gourmet cooking Home page: http://marc.merlins.org/