Date: Wed, 28 May 2003 16:28:20 +0100 From: David Malone <dwmalone@maths.tcd.ie> To: Robert Watson <rwatson@FreeBSD.org> Cc: current@FreeBSD.org Subject: Re: mb alloc and: panic: mutex Giant not owned at ../../../vm/vm_kern.c:315 Message-ID: <200305281628.aa67444@salmon.maths.tcd.ie> In-Reply-To: Your message of "Wed, 28 May 2003 11:19:45 EDT." <Pine.NEB.3.96L.1030528111845.51795D-100000@fledge.watson.org>
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> > This may be my fault, as I made some changes recently that assumed that > > the mbuf allocator grabbed giant when needed. I'll check the code path > > you've mentioned to see if it grabs giant now, but I suspect that I just > > need to move the giant grabbing back where it was before. > This doesn't seem to be a reproduceable problem for me, FWIW, (presumably > a property of bucket sizes, etc) so you have all the information I have > :-). You'd have to be quite unlucky to trigger it (calling sendit at a time when a per-cpu mbuf pool was empty). I have a vague feeling that my sendit change isn't the only place that does this. > If possible, we should get this fix in for 5.1? Yep - from what Bosko says, my change shouldn't have been safe. I'll produce a patch and run it by him, and then talk to re@. David.
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