Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 37D33C4360F for ; Wed, 20 Mar 2019 15:59:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D67622183E for ; Wed, 20 Mar 2019 15:59:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=candelatech.com header.i=@candelatech.com header.b="UMRHEdhZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727422AbfCTP7M (ORCPT ); Wed, 20 Mar 2019 11:59:12 -0400 Received: from [208.74.158.174] ([208.74.158.174]:42530 "EHLO mail3.candelatech.com" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1726295AbfCTP7J (ORCPT ); Wed, 20 Mar 2019 11:59:09 -0400 Received: from [192.168.100.195] (50-251-239-81-static.hfc.comcastbusiness.net [50.251.239.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail3.candelatech.com (Postfix) with ESMTPSA id 16C65114B50; Wed, 20 Mar 2019 08:59:07 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail3.candelatech.com 16C65114B50 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=candelatech.com; s=default; t=1553097547; bh=tLM/73h6CpniiG7x5dJLn5NnzIoTgWH+MkvwT/0GJSs=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=UMRHEdhZAbtOL+IN3S+/eEa/yOAvXjqvIVe1KXsbQfyVYq0o09JUyRY4k7jBd/8KV Gm1edkyvLavT7mnLoi5ii6ET23g8P7voD8EcoRoWz4wf7gtkmQK9NnX8wCLbtQy3vL 2IkCtC26SC96PU1m6f+THj7hpirc2i4Gu2eKklxM= Subject: Re: [PATCH] ath10k: Fix ASPM L1 state on QCA988X To: Tom Psyborg Cc: linux-wireless@vger.kernel.org, kvalo@codeaurora.org, Sujith Manoharan References: <1553025580-6118-1-git-send-email-pozega.tomislav@gmail.com> <2715bcef-5b03-fc19-e665-3c6f90a7d123@candelatech.com> From: Ben Greear Organization: Candela Technologies Message-ID: Date: Wed, 20 Mar 2019 08:59:06 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org On 3/20/19 8:48 AM, Tom Psyborg wrote: > On 20/03/2019, Ben Greear wrote: >> On 3/19/19 12:59 PM, Tomislav Požega wrote: >>> On some systems there are heavy crashes if the kernel config >>> option CONFIG_PCIEASPM_PERFORMANCE is not set. Patch provided by >>> Sujith for ath9k fixes this issue and the card operates without >>> crashes with kernel default CONFIG_PCIEASPM_DEFAULT option that uses >>> BIOS provided ASPM settings. Tested with QCA9862 mPCIe card. >> >> Hello, >> >> Were these firmware crashes or system crashes or both? Can you >> describe that a bit more so we can better understand what bugs this >> is fixing? >> >> >> Thanks, >> Ben >> > > These were system crashes that rendered firmware restart feature useless. Those below are system warnings related to the firmware messing up, not actually system crashes as far as I can tell. Anyway, I'll add this to my kernel and do some testing and push it into ath10k-ct assuming testing goes OK. Thanks, Ben > > With default kernel config pinging router took ~0.70ms and sometimes > it was possible to load some smaller web pages. Any larger page load > caused immediate crash. > > Enabling kernel option CONFIG_PCIEASPM_PERFORMANCE and rebuilding > reduced ping time to the router to ~0.55ms and connection was stable. > > This patch provides fix to the ASPM so that the card works fine > without forcing ASPM performance configuration. Ping to the router was > the same, about 0.55ms. > > So, as Sujith already explained in his original patchwork this really > fixes L1 latency issue that impacts card communication with the host. > Here is my log from yesterday while testing, what happens without this > patch, or without CONFIG_PCIEASPM_PERFORMANCE enabled: (failed to > flush transmit queue was first message on every occasion this > happened) > > Mar 19 17:09:02 ubuntu kernel: [ 258.528040] ath10k_pci 0000:03:00.0: > failed to flush transmit queue (skip 0 ar-state 1): 0 > Mar 19 17:09:05 ubuntu kernel: [ 261.536042] ath10k_pci 0000:03:00.0: > failed to install key for vdev 0 peer 10:fe:ed:e5:73:42: -110 > Mar 19 17:09:08 ubuntu kernel: [ 264.544053] ath10k_pci 0000:03:00.0: > wmi command 36893 timeout, restarting hardware > Mar 19 17:09:08 ubuntu kernel: [ 264.544067] ath10k_pci 0000:03:00.0: > failed to delete peer 10:fe:ed:e5:73:42 for vdev 0: -11 > Mar 19 17:09:08 ubuntu kernel: [ 264.544071] ath10k_pci 0000:03:00.0: > found sta peer 10:fe:ed:e5:73:42 (ptr ffff88013a466e00 id 63) entry on > vdev 0 after it was supposedly removed > Mar 19 17:09:08 ubuntu kernel: [ 264.544085] ------------[ cut here > ]------------ > Mar 19 17:09:08 ubuntu kernel: [ 264.544142] WARNING: CPU: 1 PID: 744 > at net/mac80211/sta_info.c:970 __sta_info_destroy_part2+0x18b/0x190 > [mac80211] > Mar 19 17:09:08 ubuntu kernel: [ 264.544151] Modules linked in: > xt_limit xt_tcpudp xt_DSCP ipt_REJECT nf_reject_ipv4 nf_conntrack_irc > nf_conntrack_ftp nf_conntrack_ipv4 nf_defrag_ipv4 xt_state > nf_conntrack ctr binfmt_misc vboxpci(O) vboxnetadp(O) vboxnetflt(O) > vboxdrv(O) deflate camellia_generic cast5_generic cast_common cmac > rmd160 ccm serpent_generic blowfish_generic blowfish_x86_64 > blowfish_common twofish_generic twofish_x86_64_3way xts twofish_x86_64 > twofish_common xcbc sha512_generic des_generic ablk_helper cryptd lrw > gf128mul glue_helper aes_x86_64 xfrm_user ah4 esp4 xfrm4_mode_beet > xfrm4_tunnel tunnel4 xfrm4_mode_tunnel xfrm4_mode_transport ipcomp > xfrm_ipcomp af_key xfrm_algo arc4 rfcomm bridge stp llc bnep > tpm_infineon snd_hda_codec_analog snd_hda_codec_generic ath3k btusb > btintel bluetooth snd_hda_intel snd_hda_codec snd_hda_core > Mar 19 17:09:08 ubuntu kernel: [ 264.544207] iptable_mangle > snd_hwdep iptable_filter snd_pcm ip_tables x_tables radeon > snd_seq_midi snd_rawmidi ttm ath10k_pci ath10k_core mac80211 > drm_kms_helper snd_seq_midi_event ath psmouse snd_seq video serio_raw > drm fb_sys_fops tg3 cfg80211 snd_seq_device sysimgblt snd_timer > sysfillrect syscopyarea i2c_algo_bit ptp snd wmi rfkill pps_core > k10temp hp_accel sp5100_tco lis3lv02d soundcore i2c_piix4 > input_polldev tpm_tis tpm_tis_core > Mar 19 17:09:08 ubuntu kernel: [ 264.544237] CPU: 1 PID: 744 Comm: > wpa_supplicant Tainted: G O 4.9.135 #49 > Mar 19 17:09:08 ubuntu kernel: [ 264.544238] Hardware name: > Hewlett-Packard HP Compaq 6735b (NA961ET#ABD)/30E3, BIOS 68GTT Ver. > F.15 10/25/2010 > Mar 19 17:09:08 ubuntu kernel: [ 264.544240] ffffc900006a3a50 > ffffffff81353fc6 0000000000000000 0000000000000000 > Mar 19 17:09:08 ubuntu kernel: [ 264.544243] ffffc900006a3a90 > ffffffff81146689 00000009a0270b13 ffff880133a9f000 > Mar 19 17:09:08 ubuntu kernel: [ 264.544246] ffff880137bc0700 > ffff880137c908c0 ffff880137bc0c58 ffff880137bc0c58 > Mar 19 17:09:08 ubuntu kernel: [ 264.544249] Call Trace: > Mar 19 17:09:08 ubuntu kernel: [ 264.544258] [] > dump_stack+0x4d/0x67 > Mar 19 17:09:08 ubuntu kernel: [ 264.544265] [] > __warn.cold.10+0x91/0xb6 > Mar 19 17:09:08 ubuntu kernel: [ 264.544270] [] > warn_slowpath_null+0x1d/0x20 > Mar 19 17:09:08 ubuntu kernel: [ 264.544305] [] > __sta_info_destroy_part2+0x18b/0x190 [mac80211] > Mar 19 17:09:08 ubuntu kernel: [ 264.544341] [] > __sta_info_flush+0x12d/0x190 [mac80211] > Mar 19 17:09:08 ubuntu kernel: [ 264.544378] [] > ieee80211_set_disassoc+0xbc/0x410 [mac80211] > Mar 19 17:09:08 ubuntu kernel: [ 264.544411] [] > ieee80211_mgd_deauth.cold.48+0x15e/0x1ae [mac80211] > Mar 19 17:09:08 ubuntu kernel: [ 264.544444] [] > ieee80211_deauth+0x18/0x20 [mac80211] > Mar 19 17:09:08 ubuntu kernel: [ 264.544494] [] > cfg80211_mlme_deauth+0x97/0x150 [cfg80211] > Mar 19 17:09:08 ubuntu kernel: [ 264.544529] [] > cfg80211_disconnect+0x9a/0x1f0 [cfg80211] > Mar 19 17:09:08 ubuntu kernel: [ 264.544562] [] > cfg80211_wext_siwmlme+0x83/0x9a [cfg80211] > Mar 19 17:09:08 ubuntu kernel: [ 264.544595] [] ? > cfg80211_wext_siwgenie+0x120/0x120 [cfg80211] > Mar 19 17:09:08 ubuntu kernel: [ 264.544600] [] > ioctl_standard_iw_point+0x241/0x300 > Mar 19 17:09:08 ubuntu kernel: [ 264.544602] [] > ioctl_standard_call+0xa7/0xb0 > Mar 19 17:09:08 ubuntu kernel: [ 264.544606] [] ? > security_capable+0x4e/0x70 > Mar 19 17:09:08 ubuntu kernel: [ 264.544613] [] ? > ioctl_standard_iw_point+0x300/0x300 > Mar 19 17:09:08 ubuntu kernel: [ 264.544618] [] > wireless_process_ioctl.constprop.12+0xd9/0xf0 > Mar 19 17:09:08 ubuntu kernel: [ 264.544623] [] > wext_handle_ioctl+0x62/0xa0 > Mar 19 17:09:08 ubuntu kernel: [ 264.544625] [] > dev_ioctl+0x2aa/0x5d0 > Mar 19 17:09:08 ubuntu kernel: [ 264.544629] [] ? > do_readv_writev+0x196/0x260 > Mar 19 17:09:08 ubuntu kernel: [ 264.544632] [] > sock_ioctl+0x98/0x280 > Mar 19 17:09:08 ubuntu kernel: [ 264.544635] [] > do_vfs_ioctl+0x99/0x5d0 > Mar 19 17:09:08 ubuntu kernel: [ 264.544637] [] > SyS_ioctl+0x7a/0x90 > Mar 19 17:09:08 ubuntu kernel: [ 264.544640] [] > do_syscall_64+0x61/0xc0 > Mar 19 17:09:08 ubuntu kernel: [ 264.544643] [] > entry_SYSCALL_64_after_swapgs+0x58/0xc6 > Mar 19 17:09:08 ubuntu kernel: [ 264.544646] ---[ end trace > 9403fa149caf04b7 ]--- > Mar 19 17:09:08 ubuntu kernel: [ 264.556724] ath10k_pci 0000:03:00.0: > failed to read hi_board_data address: -16 > Mar 19 17:09:14 ubuntu kernel: [ 270.595420] ath10k_pci 0000:03:00.0: > failed to wait for target init: -110 > Mar 19 17:09:14 ubuntu kernel: [ 270.600649] ieee80211 phy0: Hardware > restart was requested > Mar 19 17:09:14 ubuntu kernel: [ 270.600691] ath10k_pci 0000:03:00.0: > failed to recalculate rts/cts prot for vdev 0: -108 > Mar 19 17:09:14 ubuntu kernel: [ 270.600695] ath10k_pci 0000:03:00.0: > failed to set cts protection for vdev 0: -108 > Mar 19 17:09:14 ubuntu kernel: [ 270.600698] ath10k_pci 0000:03:00.0: > failed to set erp slot for vdev 0: -108 > Mar 19 17:09:14 ubuntu kernel: [ 270.600701] ath10k_pci 0000:03:00.0: > failed to set preamble for vdev 0: -108 > Mar 19 17:09:14 ubuntu kernel: [ 270.600704] ath10k_pci 0000:03:00.0: > failed to down vdev 0: -108 > Mar 19 17:09:14 ubuntu kernel: [ 270.600710] ath10k_pci 0000:03:00.0: > failed to set wmm params: -108 > Mar 19 17:09:14 ubuntu kernel: [ 270.600712] ath10k_pci 0000:03:00.0: > failed to set wmm params: -108 > Mar 19 17:09:14 ubuntu kernel: [ 270.600714] ath10k_pci 0000:03:00.0: > failed to set wmm params: -108 > Mar 19 17:09:14 ubuntu kernel: [ 270.600717] ath10k_pci 0000:03:00.0: > failed to set wmm params: -108 > Mar 19 17:09:14 ubuntu kernel: [ 270.600722] ath10k_pci 0000:03:00.0: > failed to stop WMI vdev 0: -108 > Mar 19 17:09:14 ubuntu kernel: [ 270.600724] ath10k_pci 0000:03:00.0: > failed to stop vdev 0: -108 > Mar 19 17:09:14 ubuntu kernel: [ 270.600734] ath10k_pci 0000:03:00.0: > failed to flush transmit queue (skip 1 ar-state 2): 5000 > Mar 19 17:09:20 ubuntu kernel: [ 276.645402] ath10k_pci 0000:03:00.0: > failed to wait for target init: -110 > Mar 19 17:09:20 ubuntu kernel: [ 276.645405] ath10k_pci 0000:03:00.0: > failed to warm reset attempt 1 of 3: -110 > Mar 19 17:09:27 ubuntu kernel: [ 282.780276] ath10k_pci 0000:03:00.0: > failed to wait for target init: -110 > Mar 19 17:09:27 ubuntu kernel: [ 282.780278] ath10k_pci 0000:03:00.0: > failed to warm reset attempt 2 of 3: -110 > Mar 19 17:09:33 ubuntu kernel: [ 288.818402] ath10k_pci 0000:03:00.0: > failed to wait for target init: -110 > Mar 19 17:09:33 ubuntu kernel: [ 288.818404] ath10k_pci 0000:03:00.0: > failed to warm reset attempt 3 of 3: -110 > Mar 19 17:09:36 ubuntu kernel: [ 291.863324] ath10k_pci 0000:03:00.0: > failed to wait for target after cold reset: -110 > Mar 19 17:09:36 ubuntu kernel: [ 291.863339] ------------[ cut here > ]------------ > Mar 19 17:09:36 ubuntu kernel: [ 291.863393] WARNING: CPU: 1 PID: 38 > at net/mac80211/util.c:1863 ieee80211_reconfig+0x7a/0x1340 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.863394] Hardware became > unavailable during restart. > Mar 19 17:09:36 ubuntu kernel: [ 291.863395] Modules linked in: > xt_limit xt_tcpudp xt_DSCP ipt_REJECT nf_reject_ipv4 nf_conntrack_irc > nf_conntrack_ftp nf_conntrack_ipv4 nf_defrag_ipv4 xt_state > nf_conntrack ctr binfmt_misc vboxpci(O) vboxnetadp(O) vboxnetflt(O) > vboxdrv(O) deflate camellia_generic cast5_generic cast_common cmac > rmd160 ccm serpent_generic blowfish_generic blowfish_x86_64 > blowfish_common twofish_generic twofish_x86_64_3way xts twofish_x86_64 > twofish_common xcbc sha512_generic des_generic ablk_helper cryptd lrw > gf128mul glue_helper aes_x86_64 xfrm_user ah4 esp4 xfrm4_mode_beet > xfrm4_tunnel tunnel4 xfrm4_mode_tunnel xfrm4_mode_transport ipcomp > xfrm_ipcomp af_key xfrm_algo arc4 rfcomm bridge stp llc bnep > tpm_infineon snd_hda_codec_analog snd_hda_codec_generic ath3k btusb > btintel bluetooth snd_hda_intel snd_hda_codec snd_hda_core > Mar 19 17:09:36 ubuntu kernel: [ 291.863439] iptable_mangle > snd_hwdep iptable_filter snd_pcm ip_tables x_tables radeon > snd_seq_midi snd_rawmidi ttm ath10k_pci ath10k_core mac80211 > drm_kms_helper snd_seq_midi_event ath psmouse snd_seq video serio_raw > drm fb_sys_fops tg3 cfg80211 snd_seq_device sysimgblt snd_timer > sysfillrect syscopyarea i2c_algo_bit ptp snd wmi rfkill pps_core > k10temp hp_accel sp5100_tco lis3lv02d soundcore i2c_piix4 > input_polldev tpm_tis tpm_tis_core > Mar 19 17:09:36 ubuntu kernel: [ 291.863468] CPU: 1 PID: 38 Comm: > kworker/1:1 Tainted: G W O 4.9.135 #49 > Mar 19 17:09:36 ubuntu kernel: [ 291.863470] Hardware name: > Hewlett-Packard HP Compaq 6735b (NA961ET#ABD)/30E3, BIOS 68GTT Ver. > F.15 10/25/2010 > Mar 19 17:09:36 ubuntu kernel: [ 291.863502] Workqueue: > events_freezable ieee80211_restart_work [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.863504] ffffc90000167cf0 > ffffffff81353fc6 ffffc90000167d40 0000000000000000 > Mar 19 17:09:36 ubuntu kernel: [ 291.863507] ffffc90000167d30 > ffffffff81146689 00000009816862dc ffff880137bc0f88 > Mar 19 17:09:36 ubuntu kernel: [ 291.863510] ffff880137bc0f88 > ffff880137bc0700 ffff880137bc0700 00000000ffffff92 > Mar 19 17:09:36 ubuntu kernel: [ 291.863513] Call Trace: > Mar 19 17:09:36 ubuntu kernel: [ 291.863519] [] > dump_stack+0x4d/0x67 > Mar 19 17:09:36 ubuntu kernel: [ 291.863523] [] > __warn.cold.10+0x91/0xb6 > Mar 19 17:09:36 ubuntu kernel: [ 291.863526] [] > warn_slowpath_fmt+0x4f/0x60 > Mar 19 17:09:36 ubuntu kernel: [ 291.863558] [] ? > drv_start+0x45/0x110 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.863591] [] > ieee80211_reconfig+0x7a/0x1340 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.863596] [] ? > try_to_del_timer_sync+0x4b/0x60 > Mar 19 17:09:36 ubuntu kernel: [ 291.863627] [] > ieee80211_restart_work+0xa7/0xe0 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.863631] [] > process_one_work+0x1fa/0x460 > Mar 19 17:09:36 ubuntu kernel: [ 291.863633] [] > worker_thread+0x32/0x4e0 > Mar 19 17:09:36 ubuntu kernel: [ 291.863635] [] ? > rescuer_thread+0x3d0/0x3d0 > Mar 19 17:09:36 ubuntu kernel: [ 291.863638] [] > kthread+0xd9/0xf0 > Mar 19 17:09:36 ubuntu kernel: [ 291.863641] [] ? > __switch_to_asm+0x24/0x60 > Mar 19 17:09:36 ubuntu kernel: [ 291.863644] [] ? > kthread_park+0x60/0x60 > Mar 19 17:09:36 ubuntu kernel: [ 291.863646] [] > ret_from_fork+0x54/0x60 > Mar 19 17:09:36 ubuntu kernel: [ 291.863648] ---[ end trace > 9403fa149caf04b8 ]--- > Mar 19 17:09:36 ubuntu kernel: [ 291.864616] ------------[ cut here > ]------------ > Mar 19 17:09:36 ubuntu kernel: [ 291.864663] WARNING: CPU: 1 PID: 38 > at net/mac80211/driver-ops.h:17 drv_remove_interface+0x10c/0x120 > [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.864680] wlan6: Failed > check-sdata-in-driver check, flags: 0x4 > Mar 19 17:09:36 ubuntu kernel: [ 291.864680] Modules linked in: > xt_limit xt_tcpudp xt_DSCP ipt_REJECT nf_reject_ipv4 nf_conntrack_irc > nf_conntrack_ftp nf_conntrack_ipv4 nf_defrag_ipv4 xt_state > nf_conntrack ctr binfmt_misc vboxpci(O) vboxnetadp(O) vboxnetflt(O) > vboxdrv(O) deflate camellia_generic cast5_generic cast_common cmac > rmd160 ccm serpent_generic blowfish_generic blowfish_x86_64 > blowfish_common twofish_generic twofish_x86_64_3way xts twofish_x86_64 > twofish_common xcbc sha512_generic des_generic ablk_helper cryptd lrw > gf128mul glue_helper aes_x86_64 xfrm_user ah4 esp4 xfrm4_mode_beet > xfrm4_tunnel tunnel4 xfrm4_mode_tunnel xfrm4_mode_transport ipcomp > xfrm_ipcomp af_key xfrm_algo arc4 rfcomm bridge stp llc bnep > tpm_infineon snd_hda_codec_analog snd_hda_codec_generic ath3k btusb > btintel bluetooth snd_hda_intel snd_hda_codec snd_hda_core > Mar 19 17:09:36 ubuntu kernel: [ 291.864742] iptable_mangle > snd_hwdep iptable_filter snd_pcm ip_tables x_tables radeon > snd_seq_midi snd_rawmidi ttm ath10k_pci ath10k_core mac80211 > drm_kms_helper snd_seq_midi_event ath psmouse snd_seq video serio_raw > drm fb_sys_fops tg3 cfg80211 snd_seq_device sysimgblt snd_timer > sysfillrect syscopyarea i2c_algo_bit ptp snd wmi rfkill pps_core > k10temp hp_accel sp5100_tco lis3lv02d soundcore i2c_piix4 > input_polldev tpm_tis tpm_tis_core > Mar 19 17:09:36 ubuntu kernel: [ 291.864778] CPU: 1 PID: 38 Comm: > kworker/1:1 Tainted: G W O 4.9.135 #49 > Mar 19 17:09:36 ubuntu kernel: [ 291.864779] Hardware name: > Hewlett-Packard HP Compaq 6735b (NA961ET#ABD)/30E3, BIOS 68GTT Ver. > F.15 10/25/2010 > Mar 19 17:09:36 ubuntu kernel: [ 291.864810] Workqueue: > events_freezable ieee80211_restart_work [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.864812] ffffc90000167b58 > ffffffff81353fc6 ffffc90000167ba8 0000000000000000 > Mar 19 17:09:36 ubuntu kernel: [ 291.864815] ffffc90000167b98 > ffffffff81146689 0000000900167b68 ffff880137c90c88 > Mar 19 17:09:36 ubuntu kernel: [ 291.864818] ffff880137bc0fe8 > ffff880137bc0700 ffff880137c91410 ffff880137bc0700 > Mar 19 17:09:36 ubuntu kernel: [ 291.864820] Call Trace: > Mar 19 17:09:36 ubuntu kernel: [ 291.864824] [] > dump_stack+0x4d/0x67 > Mar 19 17:09:36 ubuntu kernel: [ 291.864827] [] > __warn.cold.10+0x91/0xb6 > Mar 19 17:09:36 ubuntu kernel: [ 291.864830] [] > warn_slowpath_fmt+0x4f/0x60 > Mar 19 17:09:36 ubuntu kernel: [ 291.864833] [] ? > skb_dequeue+0x59/0x70 > Mar 19 17:09:36 ubuntu kernel: [ 291.864864] [] > drv_remove_interface+0x10c/0x120 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.864897] [] > ieee80211_do_stop+0x552/0x860 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.864900] [] ? > _raw_spin_unlock_bh+0x1a/0x20 > Mar 19 17:09:36 ubuntu kernel: [ 291.864933] [] > ieee80211_stop+0x1a/0x20 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.864935] [] > __dev_close_many+0x8d/0xc0 > Mar 19 17:09:36 ubuntu kernel: [ 291.864937] [] > dev_close_many+0x7d/0x110 > Mar 19 17:09:36 ubuntu kernel: [ 291.864940] [] > dev_close.part.96+0x3b/0x50 > Mar 19 17:09:36 ubuntu kernel: [ 291.864942] [] > dev_close+0x1a/0x20 > Mar 19 17:09:36 ubuntu kernel: [ 291.864995] [] > cfg80211_shutdown_all_interfaces+0x7b/0xa0 [cfg80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.865028] [] > ieee80211_handle_reconfig_failure+0x92/0xa0 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.865062] [] > ieee80211_reconfig+0x82/0x1340 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.865066] [] ? > try_to_del_timer_sync+0x4b/0x60 > Mar 19 17:09:36 ubuntu kernel: [ 291.865097] [] > ieee80211_restart_work+0xa7/0xe0 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.865100] [] > process_one_work+0x1fa/0x460 > Mar 19 17:09:36 ubuntu kernel: [ 291.865103] [] > worker_thread+0x32/0x4e0 > Mar 19 17:09:36 ubuntu kernel: [ 291.865105] [] ? > rescuer_thread+0x3d0/0x3d0 > Mar 19 17:09:36 ubuntu kernel: [ 291.865108] [] > kthread+0xd9/0xf0 > Mar 19 17:09:36 ubuntu kernel: [ 291.865110] [] ? > __switch_to_asm+0x24/0x60 > Mar 19 17:09:36 ubuntu kernel: [ 291.865112] [] ? > kthread_park+0x60/0x60 > Mar 19 17:09:36 ubuntu kernel: [ 291.865114] [] > ret_from_fork+0x54/0x60 > Mar 19 17:09:36 ubuntu kernel: [ 291.865171] ---[ end trace > 9403fa149caf04b9 ]--- > Mar 19 17:09:36 ubuntu kernel: [ 291.865178] ------------[ cut here > ]------------ > Mar 19 17:09:36 ubuntu kernel: [ 291.865210] WARNING: CPU: 1 PID: 38 > at net/mac80211/driver-ops.c:39 drv_stop+0xf8/0x100 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.865211] Modules linked in: > xt_limit xt_tcpudp xt_DSCP ipt_REJECT nf_reject_ipv4 nf_conntrack_irc > nf_conntrack_ftp nf_conntrack_ipv4 nf_defrag_ipv4 xt_state > nf_conntrack ctr binfmt_misc vboxpci(O) vboxnetadp(O) vboxnetflt(O) > vboxdrv(O) deflate camellia_generic cast5_generic cast_common cmac > rmd160 ccm serpent_generic blowfish_generic blowfish_x86_64 > blowfish_common twofish_generic twofish_x86_64_3way xts twofish_x86_64 > twofish_common xcbc sha512_generic des_generic ablk_helper cryptd lrw > gf128mul glue_helper aes_x86_64 xfrm_user ah4 esp4 xfrm4_mode_beet > xfrm4_tunnel tunnel4 xfrm4_mode_tunnel xfrm4_mode_transport ipcomp > xfrm_ipcomp af_key xfrm_algo arc4 rfcomm bridge stp llc bnep > tpm_infineon snd_hda_codec_analog snd_hda_codec_generic ath3k btusb > btintel bluetooth snd_hda_intel snd_hda_codec snd_hda_core > Mar 19 17:09:36 ubuntu kernel: [ 291.865243] iptable_mangle > snd_hwdep iptable_filter snd_pcm ip_tables x_tables radeon > snd_seq_midi snd_rawmidi ttm ath10k_pci ath10k_core mac80211 > drm_kms_helper snd_seq_midi_event ath psmouse snd_seq video serio_raw > drm fb_sys_fops tg3 cfg80211 snd_seq_device sysimgblt snd_timer > sysfillrect syscopyarea i2c_algo_bit ptp snd wmi rfkill pps_core > k10temp hp_accel sp5100_tco lis3lv02d soundcore i2c_piix4 > input_polldev tpm_tis tpm_tis_core > Mar 19 17:09:36 ubuntu kernel: [ 291.865265] CPU: 1 PID: 38 Comm: > kworker/1:1 Tainted: G W O 4.9.135 #49 > Mar 19 17:09:36 ubuntu kernel: [ 291.865266] Hardware name: > Hewlett-Packard HP Compaq 6735b (NA961ET#ABD)/30E3, BIOS 68GTT Ver. > F.15 10/25/2010 > Mar 19 17:09:36 ubuntu kernel: [ 291.865296] Workqueue: > events_freezable ieee80211_restart_work [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.865298] ffffc90000167b98 > ffffffff81353fc6 0000000000000000 0000000000000000 > Mar 19 17:09:36 ubuntu kernel: [ 291.865300] ffffc90000167bd8 > ffffffff81146689 0000000900167ba0 ffff880137bc0700 > Mar 19 17:09:36 ubuntu kernel: [ 291.865303] ffff880137bc0fe8 > 0000000000000000 ffff880137c91410 ffff880137bc0700 > Mar 19 17:09:36 ubuntu kernel: [ 291.865305] Call Trace: > Mar 19 17:09:36 ubuntu kernel: [ 291.865308] [] > dump_stack+0x4d/0x67 > Mar 19 17:09:36 ubuntu kernel: [ 291.865310] [] > __warn.cold.10+0x91/0xb6 > Mar 19 17:09:36 ubuntu kernel: [ 291.865312] [] > warn_slowpath_null+0x1d/0x20 > Mar 19 17:09:36 ubuntu kernel: [ 291.865343] [] > drv_stop+0xf8/0x100 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.865377] [] > ieee80211_stop_device+0x43/0x50 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.865410] [] > ieee80211_do_stop+0x57f/0x860 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.865412] [] ? > _raw_spin_unlock_bh+0x1a/0x20 > Mar 19 17:09:36 ubuntu kernel: [ 291.865450] [] > ieee80211_stop+0x1a/0x20 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.865455] [] > __dev_close_many+0x8d/0xc0 > Mar 19 17:09:36 ubuntu kernel: [ 291.865460] [] > dev_close_many+0x7d/0x110 > Mar 19 17:09:36 ubuntu kernel: [ 291.865465] [] > dev_close.part.96+0x3b/0x50 > Mar 19 17:09:36 ubuntu kernel: [ 291.865469] [] > dev_close+0x1a/0x20 > Mar 19 17:09:36 ubuntu kernel: [ 291.865501] [] > cfg80211_shutdown_all_interfaces+0x7b/0xa0 [cfg80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.865537] [] > ieee80211_handle_reconfig_failure+0x92/0xa0 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.865573] [] > ieee80211_reconfig+0x82/0x1340 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.865579] [] ? > try_to_del_timer_sync+0x4b/0x60 > Mar 19 17:09:36 ubuntu kernel: [ 291.865612] [] > ieee80211_restart_work+0xa7/0xe0 [mac80211] > Mar 19 17:09:36 ubuntu kernel: [ 291.865617] [] > process_one_work+0x1fa/0x460 > Mar 19 17:09:36 ubuntu kernel: [ 291.865622] [] > worker_thread+0x32/0x4e0 > Mar 19 17:09:36 ubuntu kernel: [ 291.865627] [] ? > rescuer_thread+0x3d0/0x3d0 > Mar 19 17:09:36 ubuntu kernel: [ 291.865632] [] > kthread+0xd9/0xf0 > Mar 19 17:09:36 ubuntu kernel: [ 291.865638] [] ? > __switch_to_asm+0x24/0x60 > Mar 19 17:09:36 ubuntu kernel: [ 291.865643] [] ? > kthread_park+0x60/0x60 > Mar 19 17:09:36 ubuntu kernel: [ 291.865645] [] > ret_from_fork+0x54/0x60 > Mar 19 17:09:36 ubuntu kernel: [ 291.865647] ---[ end trace > 9403fa149caf04ba ]--- > -- Ben Greear Candela Technologies Inc http://www.candelatech.com