From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Schwab Subject: Re: Oops in tun: bisected to Limit amount of queued packets per device Date: Wed, 22 Apr 2009 22:34:32 +0200 Message-ID: References: <200904090952.01175.borntraeger@de.ibm.com> <20090409093817.GA5760@gondor.apana.org.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Christian Borntraeger , "David S. Miller" , netdev@vger.kernel.org To: Herbert Xu Return-path: Received: from mail-out.m-online.net ([212.18.0.9]:50596 "EHLO mail-out.m-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756626AbZDVUel (ORCPT ); Wed, 22 Apr 2009 16:34:41 -0400 In-Reply-To: <20090409093817.GA5760@gondor.apana.org.au> (Herbert Xu's message of "Thu, 9 Apr 2009 17:38:17 +0800") Sender: netdev-owner@vger.kernel.org List-ID: Herbert Xu writes: > On Thu, Apr 09, 2009 at 09:52:01AM +0200, Christian Borntraeger wrote: >> >> with my kvm test scenario on s390 I get the following oops: >> Unable to handle kernel pointer dereference at virtual kernel address 0000000400000000 >> Oops: 003b [#1] SMP >> Modules linked in: kvm dm_multipath sunrpc qeth_l2 dm_mod qeth ccwgroup >> CPU: 0 Not tainted 2.6.29-kvm-06607-ga317a1e-dirty #8 >> Process kuli (pid: 14827, task: 00000000b3df8138, ksp: 00000000b4703a98) >> Krnl PSW : 0404e00180000000 0000000000171278 (__lock_acquire+0x3d4/0x191c) > > This is weird. It looks like it's dying on the wake_up_interruptible_sync > in tun_sock_write_space. However, I can't see how that can cause this. Any news on this? It is still badly broken in 2.6.30-rc3. Andreas. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."