From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrea Bittau Subject: Re: UNIX sockets kernel panic Date: Thu, 6 Nov 2008 15:14:34 +0000 Message-ID: <20081106151434.GA4968@shorty> References: <20081106001445.GA5595@shorty> <20081106011319.GA22389@x200.localdomain> <20081105.171822.193705306.davem@davemloft.net> <20081106.042600.114065285.davem@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: adobriyan@gmail.com, netdev@vger.kernel.org To: David Miller Return-path: Received: from ey-out-2122.google.com ([74.125.78.24]:60790 "EHLO ey-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751016AbYKFPN3 (ORCPT ); Thu, 6 Nov 2008 10:13:29 -0500 Received: by ey-out-2122.google.com with SMTP id 6so266969eyi.37 for ; Thu, 06 Nov 2008 07:13:28 -0800 (PST) Content-Disposition: inline In-Reply-To: <20081106.042600.114065285.davem@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: I'm still seeing problems with your patch. I'm getting mixed results. With SMP off, everything seems to work. With SMP, on my laptop, it still barfs (.26 and .27). Here's a screenshot (literally) of .26: http://darkircop.org/unix.jpg I can't seem to reproduce it on qemu using -smp. However, on qemu, with kernel 2.6.19, your patch, and -smp 2, I can get this one to hang: http://darkircop.org/unix2.c On my laptop, with 2.6.19 and SMP on, I think that everything works. It's likely that it's a scheduling / configuration problem, so I don't think there's anything magic in .19.