netdev - Re: 3.12.0+ INFO: inconsistent lock state

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Date:	Tue, 19 Nov 2013 06:30:16 +0000 (UTC)
From:	Cong Wang <xiyou.wangcong@...il.com>
To:	netdev@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject: Re: 3.12.0+ INFO: inconsistent lock state

On Thu, 14 Nov 2013 at 10:09 GMT, Jongman Heo <jongman.heo@...sung.com> wrote:
>
> Hi,
>
> With current linus git (HEAD 4fbf888accb3), I got following kernel message.
> Maybe related to commit 827da44c6141 ("net: Explicitly initialize u64_stats_sync structures for lockdep") ?
>
> [   43.886589] =================================
> [   43.886590] [ INFO: inconsistent lock state ]
> [   43.886593] 3.12.0+ #34 Not tainted
> [   43.886594] ---------------------------------
> [   43.886595] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
> [   43.886597] swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
> [   43.886599]  (&af_inet_stats->syncp.seq){+.?...}, at: [<c09dd983>] __netif_receive_skb_core+0x513/0x6a0
> [   43.886609] {SOFTIRQ-ON-W} state was registered at:
> [   43.886610]   [<c04a08b7>] __lock_acquire+0x467/0x1830
> [   43.886614]   [<c04a1d18>] lock_acquire+0x98/0x120
> [   43.886617]   [<c0a3718a>] ip4_datagram_connect+0x2ea/0x310
> [   43.886621]   [<c0a44cfa>] inet_dgram_connect+0x2a/0x80
> [   43.886624]   [<c09c8481>] SYSC_connect+0xb1/0xd0
> [   43.886627]   [<c09c9366>] SYSC_socketcall+0x226/0x980
> [   43.886629]   [<c09c9b93>] SyS_socketcall+0x13/0x20
> [   43.886631]   [<c0b03bcd>] sysenter_do_call+0x12/0x38

This is fixed by:
http://marc.info/?l=linux-netdev&m=138446510213411&w=2

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