Date: Mon, 10 Jan 2005 20:42:20 +0100 From: Peter Holm <peter@holm.cc> To: Bosko Milekic <bmilekic@technokratis.com> Cc: current@freebsd.org Subject: Re: panic: uma_zone_slab is looping Message-ID: <20050110194220.GA64197@peter.osted.lan> In-Reply-To: <20050110185104.GA22091@technokratis.com> References: <20041222210553.GA28108@peter.osted.lan> <20041222221540.GA70052@technokratis.com> <20041226161153.GA74592@peter.osted.lan> <20041226181738.GA21533@technokratis.com> <20041226225651.GA87178@peter.osted.lan> <20041227013745.GA5267@technokratis.com> <20041227040216.GA44588@technokratis.com> <20041228084731.GA766@peter.osted.lan> <20041228135339.GA80377@technokratis.com> <20050110185104.GA22091@technokratis.com>
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On Mon, Jan 10, 2005 at 01:51:04PM -0500, Bosko Milekic wrote: > > Peter, > > Any updates? should I commit the fix I sent you? > Your patch seems to work for me. I have been testing non stop for weeks and not seen any uma problems. - Peter > -Bosko > > On Tue, Dec 28, 2004 at 08:53:39AM -0500, Bosko Milekic wrote: > > > > On Tue, Dec 28, 2004 at 09:47:31AM +0100, Peter Holm wrote: > > > On Sun, Dec 26, 2004 at 11:02:16PM -0500, Bosko Milekic wrote: > > > > > I'll have to reserve some more time to think about this. One way I > > > > > think it might be solvable would be to change that check that > > > > > triggers the NULL return explicitly check for the bucketzone, and not > > > > > for all UMA_ZONE_INTERNAL zones; I need to think this through a little > > > > > more. > > > > > > > > Please try the attached patch and let me know if with it you can or > > > > cannot trigger the original (seemingly infinite) looping. Although I > > > > still haven't quite figured out how the described scenario could lead > > > > to infinite looping exactly (I did conclude that it could lead to some > > > > looping, though), the patch is worth trying as I believe the scenario > > > > *could* occur. > > > > > > > > > > After more than 18 hours of testing with your patch I ran into a > > > (unrelated ?) "panic: mutex vm object not owned": > > > http://www.holm.cc/stress/log/freeze06.html > > > > Your other (private) Email to me mentions that another developer has > > claimed this one. If/when he fixes it, it would be worthwhile to give > > it another consecutive 18 hours before we decide that "yes, it's good > > and it works." I am optimistic, but we have to be thorough. > > > > Good work, so far! > > > > Cheers, > > -- > > Bosko Milekic > > bmilekic@technokratis.com > > bmilekic@FreeBSD.org > > _______________________________________________ > > freebsd-current@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-current > > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" > > -- > Bosko Milekic > bmilekic@technokratis.com > bmilekic@FreeBSD.org -- Peter Holm
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