linux-kernel - iwl3945: regression at 4.15-rc1 was Re: 4.15.0-rc1-next-20171201: WARNING: .... at net/mac80211/agg-tx.c:315

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Date:   Fri, 8 Dec 2017 15:29:06 +0100
From:   Pavel Machek <pavel@....cz>
To:     Kalle Valo <kvalo@...eaurora.org>, sgruszka@...hat.com
Cc:     kernel list <linux-kernel@...r.kernel.org>,
        johannes.berg@...el.com, linville@...driver.com,
        linux-wireless@...r.kernel.org
Subject: iwl3945: regression at 4.15-rc1 was Re: 4.15.0-rc1-next-20171201:
 WARNING: .... at net/mac80211/agg-tx.c:315

Hi!

> > This is quite annoying: repeated
> >
> > [ 4169.591529] ---[ end trace e65d97cf1d20b84d ]---
> > [ 4169.591565] WARNING: CPU: 0 PID: 5472 at net/mac80211/agg-tx.c:315
> > ___ieee80211_stop_tx_\
> > ba_session+0x158/0x1f0
> >
> > Hardware is thinkpad x60. Git blame says cfcdbde35 introduced the
> > test.
> 
> To save time for others, the driver is iwl3945:
> 
> > [    0.970687] iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, in-tree:ds
> > [    0.970690] iwl3945: Copyright(c) 2003-2011 Intel Corporation
> > [    0.970692] iwl3945: hw_scan is disabled
> > [    0.971082] iwl3945 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control
> > [    1.026281] iwl3945 0000:03:00.0: Tunable channels: 11 802.11bg, 13 802.11a channels
> > [    1.026287] iwl3945 0000:03:00.0: Detected Intel Wireless WiFi Link 3945ABG
> > [    1.027866] ieee80211 phy0: Selected rate control algorithm 'iwl-3945-rs'

And same problem is there in 4.15-rc1. It is regression from 4.14.

[  530.816390] WARNING: CPU: 1 PID: 3193 at net/mac80211/agg-tx.c:315
___ieee802
11_stop_tx_ba_session+0x158/0x1f0
[  530.816395] Modules linked in:
[  530.816405] CPU: 1 PID: 3193 Comm: wpa_supplicant Tainted: G
W
4.15.0-rc1+ #447
[  530.816410] Hardware name: LENOVO 17097HU/17097HU, BIOS 7BETD8WW
(2.19 ) 03/3
1/2011
[  530.816416] task: 17453748 task.stack: 79a41831
[  530.816422] EIP: ___ieee80211_stop_tx_ba_session+0x158/0x1f0
[  530.816427] EFLAGS: 00010246 CPU: 1
[  530.816433] EAX: 00000000 EBX: f5c19000 ECX: f5eff670 EDX: f5eff040
[  530.816438] ESI: 0000000f EDI: 00000003 EBP: ef32dbb4 ESP: ef32db8c
[  530.816444]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[  530.816450] CR0: 80050033 CR2: 091a4008 CR3: 34d412c0 CR4: 000006b0
[  530.816455] Call Trace:
[  530.816463]  ieee80211_sta_tear_down_BA_sessions+0x6e/0xd0
[  530.816470]  __sta_info_destroy_part1+0x3d/0x1f0


-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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