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Bug 669373 - ath9k: inconsistent lock state
Summary: ath9k: inconsistent lock state
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kernel
Version: 6.1
Hardware: Unspecified
OS: Unspecified
low
medium
Target Milestone: rc
: ---
Assignee: Stanislaw Gruszka
QA Contact: desktop-bugs@redhat.com
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-01-13 14:17 UTC by Stanislaw Gruszka
Modified: 2011-05-23 20:37 UTC (History)
3 users (show)

Fixed In Version: kernel-2.6.32-112.el6
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-05-23 20:37:34 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:0542 0 normal SHIPPED_LIVE Important: Red Hat Enterprise Linux 6.1 kernel security, bug fix and enhancement update 2011-05-19 11:58:07 UTC

Description Stanislaw Gruszka 2011-01-13 14:17:29 UTC 
Description of problem:

> =================================
> [ INFO: inconsistent lock state ]
> 2.6.32-94.el6.bz621103.x86_64.debug #1
> ---------------------------------
> inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.
> wpa_supplicant/8534 [HC0[0]:SC0[0]:HE1:SE1] takes:
>  (&txq->axq_lock){+.?...}, at: [<ffffffffa02fb449>] ath_tx_node_cleanup+0x79/0x190 [ath9k]
> {IN-SOFTIRQ-W} state was registered at:
>   [<ffffffff810a747a>] __lock_acquire+0x5da/0x1590
>   [<ffffffff810a84d4>] lock_acquire+0xa4/0x120
>   [<ffffffff814f6edb>] _spin_lock_bh+0x3b/0x70
>   [<ffffffffa02fcfbc>] ath_tx_tasklet+0x18c/0x4b0 [ath9k]
>   [<ffffffffa02f65d0>] ath9k_tasklet+0xc0/0x110 [ath9k]
>   [<ffffffff8106ea06>] tasklet_action+0xe6/0xf0
>   [<ffffffff8106f715>] __do_softirq+0xd5/0x220
>   [<ffffffff8100c3cc>] call_softirq+0x1c/0x30
>   [<ffffffff8100e0cd>] do_softirq+0xad/0xe0
>   [<ffffffff8106f305>] irq_exit+0x95/0xa0
>   [<ffffffff814fc4f5>] do_IRQ+0x75/0xf0
>   [<ffffffff8100bb53>] ret_from_intr+0x0/0x16
>   [<ffffffff81009e9b>] cpu_idle+0xbb/0x110
>   [<ffffffff814eca03>] start_secondary+0x20b/0x24e
> irq event stamp: 29523
> hardirqs last  enabled at (29523): [<ffffffff814f6c30>] _spin_unlock_irqrestore+0x40/0x80
> hardirqs last disabled at (29522): [<ffffffff814f6fc2>] _spin_lock_irqsave+0x32/0xa0
> softirqs last  enabled at (29518): [<ffffffffa02b1f84>] __ieee80211_key_todo+0x244/0x320 [mac80211]
> softirqs last disabled at (29516): [<ffffffff814f6ebc>] _spin_lock_bh+0x1c/0x70
> 
> other info that might help us debug this:
> 4 locks held by wpa_supplicant/8534:
>  #0:  (rtnl_mutex){+.+.+.}, at: [<ffffffff81443937>] rtnl_lock+0x17/0x20
>  #1:  (&wdev->mtx){+.+.+.}, at: [<ffffffffa0277839>] cfg80211_wext_siwmlme+0x69/0xb0 [cfg80211]
>  #2:  (&ifmgd->mtx){+.+.+.}, at: [<ffffffffa02a4d40>] ieee80211_mgd_deauth+0x30/0x120 [mac80211]
>  #3:  (&local->sta_mtx){+.+.+.}, at: [<ffffffffa029cb07>] sta_info_destroy_addr+0x27/0x60 [mac80211]
> 
> stack backtrace:
> Pid: 8534, comm: wpa_supplicant Not tainted 2.6.32-94.el6.bz621103.x86_64.debug #1
> Call Trace:
>  [<ffffffff810a5127>] print_usage_bug+0x177/0x180
>  [<ffffffff810a60dd>] mark_lock+0x35d/0x430
>  [<ffffffff810a74dc>] __lock_acquire+0x63c/0x1590
>  [<ffffffff810a2e0b>] ? add_lock_to_list+0x5b/0xf0
>  [<ffffffff810a791e>] ? __lock_acquire+0xa7e/0x1590
>  [<ffffffffa029c67f>] ? __sta_info_destroy+0xff/0x360 [mac80211]
>  [<ffffffffa029c67f>] ? __sta_info_destroy+0xff/0x360 [mac80211]
>  [<ffffffff810a84d4>] lock_acquire+0xa4/0x120
>  [<ffffffffa02fb449>] ? ath_tx_node_cleanup+0x79/0x190 [ath9k]
>  [<ffffffff810957a5>] ? sched_clock_local+0x25/0x90
>  [<ffffffff81013263>] ? native_sched_clock+0x13/0x60
>  [<ffffffff814f6e66>] _spin_lock+0x36/0x70
>  [<ffffffffa02fb449>] ? ath_tx_node_cleanup+0x79/0x190 [ath9k]
>  [<ffffffffa02fb449>] ath_tx_node_cleanup+0x79/0x190 [ath9k]
Comment 2 RHEL Program Management 2011-01-14 10:52:28 UTC 
This request was evaluated by Red Hat Product Management for inclusion
in a Red Hat Enterprise Linux maintenance release. Product Management has 
requested further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed 
products. This request is not yet committed for inclusion in an Update release.
Comment 4 Stanislaw Gruszka 2011-01-28 15:35:28 UTC 
100% on debug kernel, you have to stop interface (i.e. click "disconnect" on NetworkManager window). You can set this OtherQA, since I'm able to reproduce with minimal effort.
Comment 6 Aristeu Rozanski 2011-02-03 16:18:33 UTC 
Patch(es) available on kernel-2.6.32-112.el6
Comment 9 Vladimir Benes 2011-04-29 15:35:37 UTC 
cannot see any error on -130 kernel when disconnecting fast speed download either via disconnect in nm-applet, ifconfig wlanX down or or modprobe -r ath9k
-> VERIFIED
Comment 10 errata-xmlrpc 2011-05-23 20:37:34 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0542.html
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