netdev - Re: Warning in net/ipv4/af

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Date:	Tue, 25 May 2010 17:27:09 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Anton Blanchard <anton@...ba.org>
Cc:	netdev@...r.kernel.org
Subject: Re: Warning in net/ipv4/af_inet.c:154

Le mardi 25 mai 2010 à 21:58 +1000, Anton Blanchard a écrit :
> Hi,
> 
> A build from last night (2.6.34-git9) is hitting the following WARN_ON on
> a ppc64 box:
> 
> Badness at net/ipv4/af_inet.c:154
> 
> NIP [c00000000062b034] .inet_sock_destruct+0x1b0/0x1f0
> LR [c0000000005b376c] .__sk_free+0x58/0x154
> Call Trace:
> [c000000000088c0c] .__local_bh_disable+0xdc/0xfc (unreliable)
> [c0000000005b376c] .__sk_free+0x58/0x154
> [c0000000005b3978] .sk_free+0x4c/0x60
> [c0000000005b3ab4] .sk_common_release+0x128/0x148
> [c00000000061da44] .udp_lib_close+0x28/0x40
> [c00000000062a990] .inet_release+0xd0/0xf8
> [c0000000005adbf8] .sock_release+0x60/0xec
> [c0000000005adcd0] .sock_close+0x4c/0x6c
> [c000000000186554] .__fput+0x184/0x270
> [c00000000018668c] .fput+0x4c/0x60
> [c000000000182248] .filp_close+0xc8/0xf4
> [c0000000000826d4] .put_files_struct+0xc8/0x158
> [c0000000000827d4] .exit_files+0x70/0x8c
> [c0000000000848cc] .do_exit+0x2c8/0x82c
> [c000000000084efc] .do_group_exit+0xcc/0x100
> [c000000000084f5c] .SyS_exit_group+0x2c/0x48
> [c000000000008554] syscall_exit+0x0/0x40
> 
> Which is:
> 
>         WARN_ON(sk->sk_forward_alloc);
> 

Yes, the infamous one :)

Is it reproductible ? What kind of workload is it ?
What is the NIC involved ?



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