Date: Sun, 10 Nov 2002 13:16:10 -0800 From: "Joel M. Baldwin" <qumqats@outel.org> Cc: current@FreeBSD.ORG Subject: Re: Panics instead of Hard Locks Message-ID: <46057497.1036934170@[192.168.1.20]> In-Reply-To: <20021110190335E.tegge@cvsup.no.freebsd.org> References: <40095464.1036852016@[192.168.1.20]> <20021110190335E.tegge@cvsup.no.freebsd.org>
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If there's a race why hasn't it been fixed in the main tree? A swap issue makes sense. If I've been down long enough I get swamped with email when I come back up. A bug in the latest procmail yields 130M processes that fill up swap and make the system be swap bound. The solution is the following patch to procmail. <http://www.rosat.mpe-garching.mpg.de/mailing-lists/procmail/2002-04/ms g00248.html> --On Sunday, November 10, 2002 7:03 PM +0000 Tor.Egge@cvsup.no.freebsd.org wrote: >> >> Since going from a SMP to nonSMP kernel the Hard Locks don't >> seem to be happening. However I'm getting panics. >> >> I've gotten 4 'sleeping thread owns a mutex' panics and one each >> of 'Assertion i != 0 failed at ../../../kern/subr_witness.c:669' >> and 'Duplicate free of item 0xc3895cc0 from zone 0xc0ea63c0(VMSPACE)' > > The 'Duplicate free' can be caused by a race between swapout_procs() > and kern_exit()+wait1(). > > The enclosed patch might help. > > Disabling swapping (sysctl vm.swap_enabled=0) can also help. > > - Tor Egge To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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