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Date: Thu, 14 May 2009 10:33:20 +0200 From: Daniel Lezcano <daniel.lezcano@...e.fr> To: "Eric W. Biederman" <ebiederm@...ssion.com> CC: netdev@...r.kernel.org, "Denis V. Lunev" <den@...nvz.org> Subject: Re: Kernel panic in inet_twdr_do_twkill_work Eric W. Biederman wrote: > Daniel Lezcano <daniel.lezcano@...e.fr> writes: > > >> Eric W. Biederman wrote: >> >>> So far I have only seen this twice. But the backtrace looks >>> almost identical to the one in commit d315492b1a6ba29da0fa2860759505ae1b2db857 >>> >>> The kernels I saw this on were patched version of 2.6.28 with some >>> network namespace backports. commit >>> d315492b1a6ba29da0fa2860759505ae1b2db857 was definitely present. >>> >>> Daniel any ideas? >>> >>> >> Hi Eric, >> >> I found this one. May be it could be related to your problem: >> >> commit 2bad35b7c9588eb5e65c03bcae54e7eb6b1a6504 >> >> Let me know :) >> > > "netns: oops in ip[6]_frag_reasm incrementing stats" does not look likely. > > There is no real ipv6 traffic currently on the our network and the panic > is definitely in inet_twdr_do_twkill_work. > > Further we are getting the net of a timewait socket. So I don't see how > a problem with NULL devs could have anything to do with it. > > I really suspect the purge code is not being successful. > May be you can activate the NETNS_REFCNT_DEBUG in order to check if the timewait socket were destroyed at the namespace destruction ? Unfortunately it looks like the option is not in the Kconfig :( -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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