From: Matt Domsch <Matt_Domsch@dell.com>
To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Subject: lockdep tcp_v6_rcv message
Date: Fri, 28 Jul 2006 14:45:31 -0500 [thread overview]
Message-ID: <20060728194531.GA17744@lists.us.dell.com> (raw)
Triggered on Fedora rawhide kernel-2.6.17-1.2462.fc6 x86_64 which is
based on 2.6.18rc2-git6. IPv6 was in use at the time.
=================================
[ INFO: inconsistent lock state ]
---------------------------------
inconsistent {softirq-on-W} -> {in-softirq-R} usage.
swapper/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
(&sk->sk_dst_lock){---?}, at: [<ffffffff80418ef3>]
sk_dst_check+0x26/0x12b
{softirq-on-W} state was registered at:
[<ffffffff802a874d>] lock_acquire+0x4a/0x69
[<ffffffff802672a1>] _write_lock+0x24/0x31
[<ffffffff8044a26b>] ip4_datagram_connect+0x2e1/0x350
[<ffffffff80451214>] inet_dgram_connect+0x57/0x65
[<ffffffff8041652a>] sys_connect+0x7d/0xa4
[<ffffffff8025ff0d>] system_call+0x7d/0x83
irq event stamp: 3507830
hardirqs last enabled at (3507830): [<ffffffff8020aaa8>]
kmem_cache_alloc+0xd3/0xf7
hardirqs last disabled at (3507829): [<ffffffff8020aa20>]
kmem_cache_alloc+0x4b/0xf7
softirqs last enabled at (3507808): [<ffffffff80212a9d>]
__do_softirq+0xec/0xf5
softirqs last disabled at (3507811): [<ffffffff802611ba>]
call_softirq+0x1e/0x28
other info that might help us debug this:
1 lock held by swapper/0:
#0: (slock-AF_INET6){-+..}, at: [<ffffffff883dc3d6>]
tcp_v6_rcv+0x30e/0x770 [ipv6]
stack backtrace:
Call Trace:
[<ffffffff8026e269>] show_trace+0xaa/0x23d
[<ffffffff8026e411>] dump_stack+0x15/0x17
[<ffffffff802a67bd>] print_usage_bug+0x259/0x26a
[<ffffffff802a6fc2>] mark_lock+0x1d5/0x3e3
[<ffffffff802a7b80>] __lock_acquire+0x427/0xa54
[<ffffffff802a874e>] lock_acquire+0x4b/0x69
[<ffffffff802673b8>] _read_lock+0x28/0x34
[<ffffffff80418ef3>] sk_dst_check+0x26/0x12b
[<ffffffff883bd9be>] :ipv6:ip6_dst_lookup+0x3a/0x1a2
[<ffffffff883d9dcf>] :ipv6:tcp_v6_send_synack+0x185/0x2ec
[<ffffffff883dac02>] :ipv6:tcp_v6_conn_request+0x291/0x2f3
[<ffffffff80243ce6>] tcp_rcv_state_process+0x5f/0xe7b
[<ffffffff883da1bd>] :ipv6:tcp_v6_do_rcv+0x268/0x372
[<ffffffff883dc7e7>] :ipv6:tcp_v6_rcv+0x71f/0x770
[<ffffffff883bf4ef>] :ipv6:ip6_input+0x223/0x315
[<ffffffff883bfb9d>] :ipv6:ipv6_rcv+0x254/0x2af
[<ffffffff8022154d>] netif_receive_skb+0x260/0x2dd
[<ffffffff881163ef>] :e1000:e1000_clean_rx_irq+0x423/0x4c2
[<ffffffff881148c9>] :e1000:e1000_clean+0x88/0x15b
[<ffffffff8020cc82>] net_rx_action+0xac/0x1c7
[<ffffffff80212a19>] __do_softirq+0x68/0xf5
[<ffffffff802611ba>] call_softirq+0x1e/0x28
Thanks,
Matt
--
Matt Domsch
Software Architect
Dell Linux Solutions linux.dell.com & www.dell.com/linux
Linux on Dell mailing lists @ http://lists.us.dell.com
next reply other threads:[~2006-07-28 19:45 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-28 19:45 Matt Domsch [this message]
2006-07-29 4:33 ` [IPV6]: Audit all ip6_dst_lookup/ip6_dst_store calls Herbert Xu
2006-07-30 22:44 ` David Miller
2006-07-31 3:32 ` Matt Domsch
2006-07-31 3:56 ` David Miller
2006-07-31 4:25 ` Matt Domsch
2006-07-31 9:04 ` Herbert Xu
2006-08-01 14:41 ` Andrew Morton
2006-08-01 17:24 ` Andi Kleen
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