From: "Zdenek Kabelac" <zdenek.kabelac@gmail.com>
To: "Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>
Subject: BUG: bad unlock balance detected iwl3945/1438 is trying to release lock
Date: Thu, 24 Apr 2008 01:00:34 +0200 [thread overview]
Message-ID: <c4e36d110804231600l4b540a3ka637dedca0d7687b@mail.gmail.com> (raw)
Hello
This stacktrace is with git
8876b8ed5fc9e996918cac4a553b8bc40d5605d7
(compiled few minutes ago)
(Unsure how it's related to other bugs around iwl driver)
Happens when wifi network is enabled/disabled
Zdenek
ACPI: PCI interrupt for device 0000:03:00.0 disabled
ACPI: PCI Interrupt 0000:03:00.0[A] -> GSI 17 (level, low) -> IRQ 17
PM: Writing back config space on device 0000:03:00.0 at offset 1 (was
100102, writing 100106)
=====================================
[ BUG: bad unlock balance detected! ]
-------------------------------------
iwl3945/1438 is trying to release lock (&priv->mutex) at:
[<ffffffff812ed439>] mutex_unlock+0x9/0x10
but there are no more locks to release!
other info that might help us debug this:
2 locks held by iwl3945/1438:
#0: ((name)){--..}, at: [<ffffffff8105107a>] run_workqueue+0xaa/0x230
#1: (&ifsta->work){--..}, at: [<ffffffff8105107a>] run_workqueue+0xaa/0x230
stack backtrace:
Pid: 1438, comm: iwl3945 Not tainted 2.6.25 #61
Call Trace:
[<ffffffff810669d5>] print_unlock_inbalance_bug+0x105/0x130
[<ffffffff81013458>] ? native_sched_clock+0x78/0x80
[<ffffffff81065434>] ? __lock_acquire+0x364/0x11d0
[<ffffffff81065434>] ? __lock_acquire+0x364/0x11d0
[<ffffffff81066b18>] lock_release_non_nested+0x118/0x1a0
[<ffffffff812ed439>] ? mutex_unlock+0x9/0x10
[<ffffffff81066c66>] lock_release+0xc6/0x230
[<ffffffff812ed336>] __mutex_unlock_slowpath+0x86/0x180
[<ffffffff812ed439>] mutex_unlock+0x9/0x10
[<ffffffffa0189d34>] :iwl3945:iwl3945_mac_config_interface+0x44/0x420
[<ffffffff81062aca>] ? get_lock_stats+0x2a/0x70
[<ffffffffa014ac46>] :mac80211:__ieee80211_if_config+0x86/0xe0
[<ffffffffa014b67a>] :mac80211:ieee80211_if_config+0x3a/0x70
[<ffffffffa0151f52>] :mac80211:ieee80211_sta_set_bssid+0xb2/0xd0
[<ffffffffa01577be>] :mac80211:ieee80211_sta_work+0x158e/0x19b0
[<ffffffff81062aca>] ? get_lock_stats+0x2a/0x70
[<ffffffff81062aca>] ? get_lock_stats+0x2a/0x70
[<ffffffff81062b1e>] ? put_lock_stats+0xe/0x30
[<ffffffff81059311>] ? hrtimer_start+0xe1/0x1a0
[<ffffffff81013458>] ? native_sched_clock+0x78/0x80
[<ffffffff81065434>] ? __lock_acquire+0x364/0x11d0
[<ffffffff81062b1e>] ? put_lock_stats+0xe/0x30
[<ffffffff8105107a>] ? run_workqueue+0xaa/0x230
[<ffffffff8105107a>] ? run_workqueue+0xaa/0x230
[<ffffffffa0156230>] ? :mac80211:ieee80211_sta_work+0x0/0x19b0
[<ffffffff810510c6>] run_workqueue+0xf6/0x230
[<ffffffff810512a7>] worker_thread+0xa7/0x120
[<ffffffff81055810>] ? autoremove_wake_function+0x0/0x40
[<ffffffff81051200>] ? worker_thread+0x0/0x120
[<ffffffff81055479>] kthread+0x49/0x90
[<ffffffff8100d548>] child_rip+0xa/0x12
[<ffffffff8100cc33>] ? restore_args+0x0/0x30
[<ffffffff81055430>] ? kthread+0x0/0x90
[<ffffffff8100d53e>] ? child_rip+0x0/0x12
next reply other threads:[~2008-04-23 23:00 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-23 23:00 Zdenek Kabelac [this message]
2008-04-23 23:22 ` [PATCH] iwlwifi: Don't unlock priv->mutex if it isn't locked Roland Dreier
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