WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] new netfront and occasional receive path lockup

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] new netfront and occasional receive path lockup
From: Christophe Saout <christophe@xxxxxxxx>
Date: Mon, 23 Aug 2010 16:26:52 +0200
Delivery-date: Mon, 23 Aug 2010 07:28:09 -0700
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=saout.de; s=default; t=1282573614; bh=nccCLx8YCL/3svRW+fmJm/l7Prqg74fhgehWvZ2LDd8=; h=Subject:From:In-Reply-To:References:Date:Message-ID; b=FZE8n50Qh9zXWV+sFdq0OsnRNt3rzxwwa4Q2iQSSu025lOTc1CEYzwIeNF4hrt/8C vHpwJWStK5m9/TkD1XydMS7LlzhRyn/T9WGTqjqUPR3edKkC6P6a5NUh0oQuKh02go phNrQ5XrUSqxm1fz2I+sf4OvIjlN0DV6q2lyDYMs=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <1282495384.12843.11.camel@xxxxxxxxxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <1282495384.12843.11.camel@xxxxxxxxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Hi yet again,

[not quoting everything again]

I finally managed to trigger the issue on the test VM, which is now
stuck in that state since last night and can be inspected.  Apparently
the tx ring on the netback side is full, since every packet sent is
immediately dropped (as seen from ifconfig output).  No interrupts
moving on the guest.

Still I'm wondering what would be the best course of action trying to
debug this now.  Should I have compiled some debugger into the
hypervisor? (gdbsx apparently needs that)

Thanks,
        Christophe



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel