From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Jones Subject: Re: sctp refcount bug. Date: Thu, 13 Jul 2017 10:56:56 -0400 Message-ID: <20170713145656.q3mvzohpzmg2mawe@codemonkey.org.uk> References: <20170713143639.kbfqyasw4z4kjzsf@codemonkey.org.uk> <20170713143834.GU18138@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org, Vlad Yasevich , Neil Horman , linux-sctp@vger.kernel.org To: Marcelo Ricardo Leitner Return-path: Received: from scorn.kernelslacker.org ([45.56.101.199]:51886 "EHLO scorn.kernelslacker.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751193AbdGMO47 (ORCPT ); Thu, 13 Jul 2017 10:56:59 -0400 Content-Disposition: inline In-Reply-To: <20170713143834.GU18138@localhost.localdomain> Sender: netdev-owner@vger.kernel.org List-ID: On Thu, Jul 13, 2017 at 11:38:34AM -0300, Marcelo Ricardo Leitner wrote: > On Thu, Jul 13, 2017 at 10:36:39AM -0400, Dave Jones wrote: > > Hit this on Linus' current tree. > > > > > > refcount_t: underflow; use-after-free. > > Any tips on how to reproduce this? Only seen it once so far. Will see if I can narrow it down if it reproduces. It took ~12 hours of fuzzing to find overnight. Dave