X-Recipient: archive-cygwin@delorie.com X-Spam-Check-By: sourceware.org Date: Thu, 4 Nov 2010 15:43:15 -0400 From: Christopher Faylor To: cygwin@cygwin.com Subject: Re: 1.7.7: sh.exe sometimes hangs with 100% cpu usage Message-ID: <20101104194314.GA13448@ednor.casa.cgf.cx> Reply-To: cygwin@cygwin.com Mail-Followup-To: cygwin@cygwin.com References: <1906373454.1857461288894772454.JavaMail.root@spooler8-g27.priv.proxad.net> <48848513.1857571288894785382.JavaMail.root@spooler8-g27.priv.proxad.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <48848513.1857571288894785382.JavaMail.root@spooler8-g27.priv.proxad.net> User-Agent: Mutt/1.5.20 (2009-06-14) Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com On Thu, Nov 04, 2010 at 07:19:45PM +0100, hules@free.fr wrote: >Some more info about that infinite loop in cygwin1.dll . > >This is indeed inside the cygheap_fixup_in_child function of cygwin1.dll . > >Inside this function, there is a loop that is: > >for (_cmalloc_entry *rvc = cygheap->chain; rvc; rvc = rvc->prev) { > ... >} > >In the case of my sh.exe process , this loop never ends because it is stuck with an "rvc" pointer that is such that "rvc->prev == rvc" > >I'm not sure what to look at, is there a chance that this is an "easy" bug to fix ? Not unless you can provide a reproducible test case. If this is memory corruption that's rarely an easy bug to track down. It isn't clear why you can't use gdb to debug this, btw. cgf -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple