From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with SMTP id A601A6B00E5 for ; Tue, 16 Mar 2010 13:54:13 -0400 (EDT) Message-ID: <4B9FC557.2060002@redhat.com> Date: Tue, 16 Mar 2010 13:52:23 -0400 From: Rik van Riel MIME-Version: 1.0 Subject: Re: [PATCH] exit: fix oops in sync_mm_rss References: <20100316170808.GA29400@redhat.com> In-Reply-To: <20100316170808.GA29400@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: "Michael S. Tsirkin" Cc: cl@linux-foundation.org, lee.schermerhorn@hp.com, rientjes@google.com, Andrew Morton , Hugh Dickins , KAMEZAWA Hiroyuki , Minchan Kim , Andrea Arcangeli , "David S. Miller" , linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On 03/16/2010 01:08 PM, Michael S. Tsirkin wrote: > (note: handle_rx_net is a work item using workqueue in question). > sync_mm_rss+0x33/0x6f gave me a hint. I also tried reverting > 34e55232e59f7b19050267a05ff1226e5cd122a5 and the oops goes away. > > The module in question calls use_mm and later unuse_mm from a kernel > thread. It is when this kernel thread is destroyed that the crash > happens. > > Signed-off-by: Michael S. Tsirkin Reviewed-by: Rik van Riel -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org