From: Anton Blanchard <anton@samba.org>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: netdev@vger.kernel.org
Subject: Re: Warning in net/ipv4/af_inet.c:154
Date: Wed, 26 May 2010 13:19:43 +1000 [thread overview]
Message-ID: <20100526031943.GA28295@kryten> (raw)
In-Reply-To: <1274801229.5020.80.camel@edumazet-laptop>
Hi,
> > 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 ?
It was running sysbench against a postgresql database over localhost. In
each case I checked, sk_forward_alloc was less than one page.
I notice we update sk_forward_alloc in sk_mem_charge and sk_mem_uncharge.
Since it isn't an atomic variable I went looking for a lock somewhere in
the call chain (first thought was the socket lock). I couldn't find
anything, but I could easily be missing something.
Anton
next prev parent reply other threads:[~2010-05-26 3:24 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-25 11:58 Warning in net/ipv4/af_inet.c:154 Anton Blanchard
2010-05-25 15:27 ` Eric Dumazet
2010-05-26 3:19 ` Anton Blanchard [this message]
2010-05-26 5:18 ` Eric Dumazet
2010-05-26 7:56 ` David Miller
2010-05-26 10:12 ` Eric Dumazet
2010-05-27 3:56 ` Anton Blanchard
2010-05-27 4:06 ` David Miller
2010-05-27 4:21 ` Eric Dumazet
2010-05-27 4:18 ` Eric Dumazet
2010-05-27 4:21 ` David Miller
2010-05-27 5:06 ` [PATCH] net: fix lock_sock_bh/unlock_sock_bh Eric Dumazet
2010-05-27 5:20 ` Eric Dumazet
2010-05-27 5:23 ` David Miller
2010-05-27 6:09 ` Anton Blanchard
2010-05-27 7:29 ` David Miller
2010-05-29 7:21 ` Warning in net/ipv4/af_inet.c:154 David Miller
2010-05-31 16:02 ` [PATCH] net: sock_queue_err_skb() dont mess with sk_forward_alloc Eric Dumazet
2010-06-01 6:44 ` David Miller
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