Date: Fri, 01 Jul 2005 13:54:59 -0400 From: Gary Mu1der <gmulder@infotechfl.com> To: Gleb Smirnoff <glebius@FreeBSD.org> Cc: freebsd-stable@FreeBSD.org Subject: Re: panic in RELENG_5 UMA - two new stack traces Message-ID: <42C58373.60008@infotechfl.com> In-Reply-To: <20050701085808.GD52023@cell.sick.ru> References: <20050621070427.GA738@obiwan.tataz.chchile.org> <20050621090701.GB34406@cell.sick.ru> <20050621105154.GA36538@cell.sick.ru> <42B961B9.7A5856B3@freebsd.org> <20050623104230.GB61389@cell.sick.ru> <20050623141514.GD738@obiwan.tataz.chchile.org> <42BC5EE2.2020003@infotechfl.com> <20050627082958.GB97832@cell.sick.ru> <42C16BBF.4060107@infotechfl.com> <20050701085808.GD52023@cell.sick.ru>
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Gleb Smirnoff wrote: > On Tue, Jun 28, 2005 at 11:24:47AM -0400, Gary Mu1der wrote: > G> I spent the day yesterday trying to reproduce the crash that I posted > G> last week and you kindly replied to. This is due to the fact that I > G> stupidly managed to overwrite the kernel.debug that I used to generate > G> the stack trace. Sadly I could not cause the system to crash again with > G> the same sb* errors. > G> > G> I did however remove both the Berkley Packet Filter and IPFilter from my > G> custom kernel to try and isolate the problem. This has caused the crash > G> to occur in a different and more reproducible form. I have both > G> INVARIANTS and WITNESS enabled, as you can see from my kernel conf. > G> which is included at the end of this e-mail. > G> > G> Below are the latest stack traces (using bge and then fxp NICs), kernel > G> conf. and dmesg. Any help would be appreciated. This time I have a copy > G> of both the core files and corresponding kernel.debug so I can hopefully > G> provide you with any info you need. > > How often does it crash? Does debug.mpsafenet=0 increases stability? I can reproduce the crash within 60 seconds of firing off 30+ ping/arp -d scripts, all running in parallel. debug.mpsafenet=0 seems to have solved the problem. I'm running 100+ instances of the above script and the system has been stable for over an hour. As I wanted some background on what "debug.mpsafenet=0" does, I did some Googling and found a good write up here: http://unix.derkeiler.com/Mailing-Lists/FreeBSD/current/2004-08/2280.html Thanks, Gary
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