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From: David Miller <davem@davemloft.net>
To: Luc.Goria@adept-telecom.fr
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, alan@redhat.com
Subject: Re: [PATCH 2.6.27.2] datagram handling routines : mapping/unmapping paged data in soft IRQ
Date: Mon, 11 May 2009 16:36:52 -0700 (PDT)	[thread overview]
Message-ID: <20090511.163652.156749735.davem@davemloft.net> (raw)
In-Reply-To: <54466B0E862D654998371DCA86B6FE2F4B6D47@adept-srv2.adept.local>

From: "Luc Goria" <Luc.Goria@adept-telecom.fr>
Date: Mon, 11 May 2009 15:32:21 +0200

> 
> Kernel crashes when a network module tries to copy a datagram to iovec in soft IRQ with paged data.
> The problem is that kunmap function can't be called in IRQ.
> All calls to kmap/kunmap fonctions are replaced by calls to kmap_skb_frag/kunmap_skb_frag when paged data are involved.
> 
>  <<datagram.c.patch>> 
> Signed-off-by: Luc GORIA <luc.goria@adept-telecom.fr>

What network module does this?  You're not supposed to.


  reply	other threads:[~2009-05-11 23:37 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-11 13:32 [PATCH 2.6.27.2] datagram handling routines : mapping/unmapping paged data in soft IRQ Luc Goria
2009-05-11 23:36 ` David Miller [this message]
2009-05-12  8:48 Luc Goria
2009-05-13  5:09 ` David Miller

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