From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Grumbach, Emmanuel" Subject: Re: [linuxwifi] [-next] WARNING at iwl_mvm_time_event_send_add+0x72/0x1b6 Date: Mon, 26 Oct 2015 07:23:07 +0000 Message-ID: <0BA3FCBA62E2DC44AF3030971E174FB32E8B0644@hasmsx107.ger.corp.intel.com> References: <20151026063932.GA31271@swordfish> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Cc: linuxwifi , "linux-wireless@vger.kernel.org" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" To: Sergey Senozhatsky , Kalle Valo Return-path: Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org 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. > 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" >