linux-kernel - Re: [linuxwifi] [-next] WARNING at iwl_mvm_time_event_send

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <0BA3FCBA62E2DC44AF3030971E174FB32E8B0644@hasmsx107.ger.corp.intel.com>
Date:	Mon, 26 Oct 2015 07:23:07 +0000
From:	"Grumbach, Emmanuel" <emmanuel.grumbach@...el.com>
To:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
	Kalle Valo <kvalo@...eaurora.org>
CC:	linuxwifi <linuxwifi@...el.com>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [linuxwifi] [-next] WARNING at
 iwl_mvm_time_event_send_add+0x72/0x1b6

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:
>  [<ffffffff811dd4ad>] dump_stack+0x4b/0x63
>  [<ffffffff8103db4e>] warn_slowpath_common+0x99/0xb2
>  [<ffffffffa04fd261>] ? iwl_mvm_time_event_send_add+0x72/0x1b6 [iwlmvm]
>  [<ffffffff8103dc1a>] warn_slowpath_null+0x1a/0x1c
>  [<ffffffffa04fd261>] iwl_mvm_time_event_send_add+0x72/0x1b6 [iwlmvm]
>  [<ffffffff8107979f>] ? __lock_is_held+0x3c/0x57
>  [<ffffffffa04fdb8b>] iwl_mvm_protect_session+0x150/0x219 [iwlmvm]
>  [<ffffffffa04fdb8b>] ? iwl_mvm_protect_session+0x150/0x219 [iwlmvm]
>  [<ffffffffa04ecf57>] ? iwl_mvm_ref_sync+0x37/0x10c [iwlmvm]
>  [<ffffffffa04ed475>] iwl_mvm_mac_mgd_prepare_tx+0xa4/0xc2 [iwlmvm]
>  [<ffffffffa04ed475>] ? iwl_mvm_mac_mgd_prepare_tx+0xa4/0xc2 [iwlmvm]
>  [<ffffffffa047be43>] ieee80211_mgd_deauth+0x14f/0x3b0 [mac80211]
>  [<ffffffff8107979f>] ? __lock_is_held+0x3c/0x57
>  [<ffffffffa0446758>] ieee80211_deauth+0x18/0x1a [mac80211]
>  [<ffffffffa02bc4b2>] cfg80211_mlme_deauth+0x13c/0x28e [cfg80211]
>  [<ffffffffa02c0f9a>] cfg80211_disconnect+0xb5/0x2f7 [cfg80211]
>  [<ffffffffa02d901e>] cfg80211_mgd_wext_siwfreq+0xed/0x160 [cfg80211]
>  [<ffffffffa02d8c81>] ? cfg80211_wext_freq+0x5f/0x5f [cfg80211]
>  [<ffffffffa02d8cf7>] cfg80211_wext_siwfreq+0x76/0xf6 [cfg80211]
>  [<ffffffff813a9809>] ioctl_standard_call+0x66/0x376
>  [<ffffffff813a9caa>] wext_handle_ioctl+0x102/0x16d
>  [<ffffffff8130782b>] dev_ioctl+0x6bb/0x6de
>  [<ffffffff81113adc>] ? handle_mm_fault+0xefc/0x13f9
>  [<ffffffff812d73d0>] sock_ioctl+0x230/0x23c
>  [<ffffffff812d73d0>] ? sock_ioctl+0x230/0x23c
>  [<ffffffff8115047d>] do_vfs_ioctl+0x458/0x4dc
>  [<ffffffff813b3635>] ? retint_user+0x18/0x20
>  [<ffffffff8115a5fe>] ? __fget_light+0x4d/0x71
>  [<ffffffff81150544>] SyS_ioctl+0x43/0x61
>  [<ffffffff813b2b57>] entry_SYSCALL_64_fastpath+0x12/0x6f
> ---[ end trace 6a44e7f1588bdae7 ]---
> 
> 
> 	-ss
> -------------------------------------
> linuxwifi@...ists.intel.com
> https://eclists.intel.com/sympa/info/linuxwifi
> Unsubscribe by sending email to sympa@...ists.intel.com with subject "Unsubscribe linuxwifi"
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/