From: Jarek Poplawski <jarkao2@gmail.com>
To: "Gustavo F. Padovan" <padovan@profusion.mobi>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
marcel@holtmann.org, davem@davemloft.net,
linux-bluetooth@vger.kernel.org
Subject: Re: Possible regression with skb_clone() in 2.6.36
Date: Fri, 10 Sep 2010 10:15:33 +0000 [thread overview]
Message-ID: <20100910101533.GA21844@ff.dom.local> (raw)
In-Reply-To: <1283988727-1456-1-git-send-email-padovan@profusion.mobi>
On 2010-09-09 01:32, Gustavo F. Padovan wrote:
> I've been experiencing some problems when running the L2CAP Streaming mode in
> 2.6.36. The system quickly runs in an Out Of Memory condition and crash. That
> wasn't happening before, so I think we may have a regression here (I didn't
> find where yet). The crash log is below.
>
> The following patch does not fix the regression, but shows that removing the
> skb_clone() call from l2cap_streaming_send() we workaround the problem. The
> patch is good anyway because it saves memory and time.
>
> By now I have no idea on how to fix this.
My suggestion is to check the length of conn->data_q in hci_send_acl()
while this happens, and maybe try to set some limit here.
Jarek P.
WARNING: multiple messages have this Message-ID (diff)
From: Jarek Poplawski <jarkao2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: "Gustavo F. Padovan" <padovan-Y3ZbgMPKUGA34EUeqzHoZw@public.gmane.org>
Cc: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
marcel-kz+m5ild9QBg9hUCZPvPmw@public.gmane.org,
davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org,
linux-bluetooth-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: Possible regression with skb_clone() in 2.6.36
Date: Fri, 10 Sep 2010 10:15:33 +0000 [thread overview]
Message-ID: <20100910101533.GA21844@ff.dom.local> (raw)
In-Reply-To: <1283988727-1456-1-git-send-email-padovan-Y3ZbgMPKUGA34EUeqzHoZw@public.gmane.org>
On 2010-09-09 01:32, Gustavo F. Padovan wrote:
> I've been experiencing some problems when running the L2CAP Streaming mode in
> 2.6.36. The system quickly runs in an Out Of Memory condition and crash. That
> wasn't happening before, so I think we may have a regression here (I didn't
> find where yet). The crash log is below.
>
> The following patch does not fix the regression, but shows that removing the
> skb_clone() call from l2cap_streaming_send() we workaround the problem. The
> patch is good anyway because it saves memory and time.
>
> By now I have no idea on how to fix this.
My suggestion is to check the length of conn->data_q in hci_send_acl()
while this happens, and maybe try to set some limit here.
Jarek P.
next prev parent reply other threads:[~2010-09-10 10:15 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-08 23:32 Possible regression with skb_clone() in 2.6.36 Gustavo F. Padovan
2010-09-08 23:32 ` Gustavo F. Padovan
2010-09-08 23:32 ` [PATCH] Bluetooth: Simplify L2CAP Streaming mode sending Gustavo F. Padovan
2010-09-10 10:15 ` Jarek Poplawski [this message]
2010-09-10 10:15 ` Possible regression with skb_clone() in 2.6.36 Jarek Poplawski
2010-09-10 16:53 ` Mat Martineau
2010-09-10 16:53 ` Mat Martineau
2010-09-10 19:45 ` Gustavo F. Padovan
2010-09-10 19:45 ` Gustavo F. Padovan
2010-09-15 18:42 ` Gustavo F. Padovan
2010-09-15 18:42 ` Gustavo F. Padovan
2010-09-16 0:10 ` Gustavo F. Padovan
2010-09-16 0:10 ` Gustavo F. Padovan
2010-09-16 16:40 ` Mat Martineau
2010-09-17 21:08 ` Gustavo F. Padovan
-- strict thread matches above, loose matches on Subject: below --
2010-08-30 23:10 Gustavo F. Padovan
2010-08-30 23:10 ` Gustavo F. Padovan
2010-09-17 22:34 ` Andrew Morton
2010-09-17 22:34 ` Andrew Morton
2010-09-21 4:10 ` Gustavo F. Padovan
2010-09-21 4:10 ` Gustavo F. Padovan
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