Date: Mon, 18 Oct 2004 22:37:13 -0400 From: Brian Fundakowski Feldman <green@freebsd.org> To: Harald Schmalzbauer <h@schmalzbauer.de> Cc: freebsd-current@freebsd.org Subject: Re: WITNESS bug (Was Re: kern/68442: panic - acquiring duplicate lock of same type: "sleepq chain") Message-ID: <20041019023713.GA1072@green.homeunix.org> In-Reply-To: <200407071913.46339@harryhomeworkstation> References: <20040628202434.GA73213@atrbg11.informatik.tu-muenchen.de> <20040701210317.GA86225@atrbg11.informatik.tu-muenchen.de> <20040704194240.GA1658@atrbg11.informatik.tu-muenchen.de> <200407071913.46339@harryhomeworkstation>
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On Wed, Jul 07, 2004 at 07:13:46PM +0200, Harald Schmalzbauer wrote: > Am Sonntag, 4. Juli 2004 21:42 schrieb Daniel Lang: > > [...] > > > > > > Btw, the addition of WITNESS is indeed something that has > > > changed since all the trouble started. When the machine was > > > still running in a stable fashion I did not have WITNESS > > > enabled. I did it, when I put in more memory and built a PAE > > > kernel and left it in since. > > > > [..] > > > > I am now more convinced, that the bug is indeed in WITNESS itself. > > Without WITNESS the machine is running rock stable again now > > for three days. With WITNESS enabled it has crashed within minutes, > > uptime at most a few hours. Also the stack trace I got points > > into WITNESS code. > > I'd like to contribute a completley unqualifide note: > When I build a -current kernel with WITNESS and I use the nvidia driver (not > the GL-Part, just the kernel module and the x-driver) the system freezes > without panic or anything else, only a powercycle helps. > After removing WITNESS the box is running fine. Now for about 3 Weeks without > any problem..... > > If I can do any tests please give me instructions, I'd love to help. You should never not run with WITNESS_SKIPSPIN if you use modules. Any spin mutexes not listed statically in the witness code will cause your machine to immediately panic. -- Brian Fundakowski Feldman \'[ FreeBSD ]''''''''''\ <> green@FreeBSD.org \ The Power to Serve! \ Opinions expressed are my own. \,,,,,,,,,,,,,,,,,,,,,,\
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