From: Jarek Poplawski <jarkao2@o2.pl>
To: netdev@vger.kernel.org
Cc: Dave Jones <davej@redhat.com>, hadi@cyberus.ca, davem@davemloft.net
Subject: Re: tc related lockdep warning.
Date: Mon, 25 Sep 2006 14:43:52 +0200 [thread overview]
Message-ID: <20060925124352.GA1592@ff.dom.local> (raw)
In-Reply-To: <20060924212933.GB20123@redhat.com>
On 24-09-2006 23:29, Dave Jones wrote:
> =================================
> [ INFO: inconsistent lock state ]
> ---------------------------------
> inconsistent {softirq-on-R} -> {in-softirq-W} usage.
> swapper/0 [HC0[0]:SC1[2]:HE1:SE0] takes:
> (police_lock){-+--}, at: [<f8d304fd>] tcf_police_destroy+0x24/0x8f [act_police]
> {softirq-on-R} state was registered at:
> [<c043bdd6>] lock_acquire+0x4b/0x6d
> [<c061495a>] _read_lock+0x19/0x28
> [<f8d3026a>] tcf_act_police_locate+0x26a/0x363 [act_police]
...
> [<c06148a5>] _write_lock_bh+0x1e/0x2d
> [<f8d304fd>] tcf_police_destroy+0x24/0x8f [act_police]
...
> [<c042900f>] __do_softirq+0x78/0xf2
> [<c0406683>] do_softirq+0x5a/0xbe
> [<c0428eb8>] irq_exit+0x3d/0x3f
> [<c04179df>] smp_apic_timer_interrupt+0x73/0x78
> [<c0404b12>] apic_timer_interrupt+0x2a/0x30
> DWARF2 unwinder stuck at apic_timer_interrupt+0x2a/0x30
> Leftover inexact backtrace:
It's probably 2.6.18 and should change a little now (git4) but
IMHO main problem stays: it looks tcf_act_police_locate in
act_police.c was preempted in read_lock (tcf_police_lookup)
- now the same is possible in tcf_hash_lookup. So maybe
read_lock_bh will help?
Jarek P.
next prev parent reply other threads:[~2006-09-25 12:39 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-24 21:29 tc related lockdep warning Dave Jones
2006-09-25 12:43 ` Jarek Poplawski [this message]
2006-09-25 12:47 ` jamal
2006-09-25 13:05 ` Jarek Poplawski
2006-09-25 13:29 ` Patrick McHardy
2006-09-26 16:15 ` Patrick McHardy
2006-09-26 21:20 ` Dave Jones
2006-09-27 8:54 ` Jarek Poplawski
2006-09-27 9:57 ` Patrick McHardy
2006-09-28 12:17 ` Patrick McHardy
2006-09-28 13:13 ` Jarek Poplawski
2006-09-28 14:20 ` Stephen Hemminger
2006-09-29 6:28 ` Jarek Poplawski
2006-09-27 10:14 ` Patrick McHardy
2006-09-27 14:41 ` Ismail Donmez
2006-09-27 12:07 ` Patrick McHardy
2006-09-27 17:26 ` Ismail Donmez
2006-09-27 17:33 ` Dave Jones
2006-09-27 23:53 ` David Miller
2006-09-28 9:07 ` Jarek Poplawski
2006-09-28 8:17 ` Jarek Poplawski
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