From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753335AbbJZHvc (ORCPT ); Mon, 26 Oct 2015 03:51:32 -0400 Received: from mga03.intel.com ([134.134.136.65]:61318 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752901AbbJZHva convert rfc822-to-8bit (ORCPT ); Mon, 26 Oct 2015 03:51:30 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,200,1444719600"; d="scan'208";a="802973093" From: "Grumbach, Emmanuel" To: Sergey Senozhatsky , Kalle Valo CC: linuxwifi , "linux-wireless@vger.kernel.org" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [linuxwifi] [-next] WARNING at iwl_mvm_time_event_send_add+0x72/0x1b6 Thread-Topic: [linuxwifi] [-next] WARNING at iwl_mvm_time_event_send_add+0x72/0x1b6 Thread-Index: AQHRD7ll6c0xhOx8hUyLevQ73br2YQ== Date: Mon, 26 Oct 2015 07:51:23 +0000 Message-ID: <0BA3FCBA62E2DC44AF3030971E174FB32E8B0828@hasmsx107.ger.corp.intel.com> References: <20151026063932.GA31271@swordfish> <0BA3FCBA62E2DC44AF3030971E174FB32E8B0644@hasmsx107.ger.corp.intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.12.217.172] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/26/2015 09:23 AM, Grumbach, Emmanuel wrote: > Hi, > > On 10/26/2015 08:41 AM, Sergey Senozhatsky wrote: >> Hi, >> >> linux-next 20151022 >> >> > > Can be reproduced reliably? > Seems like a bad race between the end of session protection for the > authentication and the start of the session protection for the deauth. > I think I found the hole in the locks in there, but it is going to be > tricky to solve. Not sure if I found the race. Can you please send the complete log? If you have timestamps, it'd greatly helps... dmesg output should do. > >> wlp2s0: aborting authentication with 00:04:96:61:cd:e0 by local choice (Reason: 3=DEAUTH_LEAVING) >> ------------[ cut here ]------------ >> WARNING: CPU: 0 PID: 1006 at drivers/net/wireless/iwlwifi/mvm/time-event.c:513 iwl_mvm_time_event_send_add+0x72/0x1b6 [iwlmvm]() >> Modules linked in: mousedev arc4 nls_iso8859_1 nls_cp437 vfat fat serio_raw psmouse atkbd coretemp hwmon i915 libps2 iwlmvm i2c_algo_bit mac80211 drm_kms_helper cfbfillrect intel_powerclamp syscopyarea cfbimgblt sysfillrect sysimgblt crc32c_intel fb_sys_fops cfbcopyarea iwlwifi drm r8 >> CPU: 0 PID: 1006 Comm: iwconfig Not tainted 4.3.0-rc6-next-20151022-dbg-00002-g4041783-dirty #260 >> 0000000000000000 ffff8800c69479c8 ffffffff811dd4ad 0000000000000000 >> ffff8800c6947a00 ffffffff8103db4e ffffffffa04fd261 ffff88041c7cdfc8 >> ffff88041cc87a20 ffff88041c7ceb28 ffff8800c6947aac ffff8800c6947a10 >> Call Trace: >> [] dump_stack+0x4b/0x63 >> [] warn_slowpath_common+0x99/0xb2 >> [] ? iwl_mvm_time_event_send_add+0x72/0x1b6 [iwlmvm] >> [] warn_slowpath_null+0x1a/0x1c >> [] iwl_mvm_time_event_send_add+0x72/0x1b6 [iwlmvm] >> [] ? __lock_is_held+0x3c/0x57 >> [] iwl_mvm_protect_session+0x150/0x219 [iwlmvm] >> [] ? iwl_mvm_protect_session+0x150/0x219 [iwlmvm] >> [] ? iwl_mvm_ref_sync+0x37/0x10c [iwlmvm] >> [] iwl_mvm_mac_mgd_prepare_tx+0xa4/0xc2 [iwlmvm] >> [] ? iwl_mvm_mac_mgd_prepare_tx+0xa4/0xc2 [iwlmvm] >> [] ieee80211_mgd_deauth+0x14f/0x3b0 [mac80211] >> [] ? __lock_is_held+0x3c/0x57 >> [] ieee80211_deauth+0x18/0x1a [mac80211] >> [] cfg80211_mlme_deauth+0x13c/0x28e [cfg80211] >> [] cfg80211_disconnect+0xb5/0x2f7 [cfg80211] >> [] cfg80211_mgd_wext_siwfreq+0xed/0x160 [cfg80211] >> [] ? cfg80211_wext_freq+0x5f/0x5f [cfg80211] >> [] cfg80211_wext_siwfreq+0x76/0xf6 [cfg80211] >> [] ioctl_standard_call+0x66/0x376 >> [] wext_handle_ioctl+0x102/0x16d >> [] dev_ioctl+0x6bb/0x6de >> [] ? handle_mm_fault+0xefc/0x13f9 >> [] sock_ioctl+0x230/0x23c >> [] ? sock_ioctl+0x230/0x23c >> [] do_vfs_ioctl+0x458/0x4dc >> [] ? retint_user+0x18/0x20 >> [] ? __fget_light+0x4d/0x71 >> [] SyS_ioctl+0x43/0x61 >> [] entry_SYSCALL_64_fastpath+0x12/0x6f >> ---[ end trace 6a44e7f1588bdae7 ]--- >> >> >> -ss >> ------------------------------------- >> linuxwifi@eclists.intel.com >> https://eclists.intel.com/sympa/info/linuxwifi >> Unsubscribe by sending email to sympa@eclists.intel.com with subject "Unsubscribe linuxwifi" >> >