Date: Wed, 19 Oct 2016 19:26:44 -0500 From: Mike Karels <mike@karels.net> To: Gleb Smirnoff <glebius@FreeBSD.org> Cc: George Neville-Neil <gnn@freebsd.org>, net@FreeBSD.org Subject: Re: TCP route caching panic Message-ID: <201610200026.u9K0Qibx017899@mail.karels.net> In-Reply-To: Your message of Wed, 19 Oct 2016 16:36:40 -0700. <20161019233640.GN27748@FreeBSD.org>
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> On Wed, Oct 19, 2016 at 02:29:14PM -0700, Gleb Smirnoff wrote: > T> Hi! > T> > T> I got this panic in a bhyve VM, which was just compiling stuff > T> and had two ssh sessions open. It has static network configuration, > T> one interfaces, one IP address, IPv4 only and it sees only hardware > T> address of the host. So it is minimal possible configuration. It > T> runs with INVARIANTS. > Important note that kernel has FLOWTABLE option. And recently I refined > the original fix of FLOWTABLE+inpcb_route_cache. This might be related, > but I don't see how. The inp code explicitly nulls the ro_lle when > it frees it. Hmm, I run a similar configuration, but may not run as many compiles. I'm running a recent head GENERIC system, so has INVARIANTS. I've tested with FLOWTABLE in the past; I'll try it again now. But if I understand correctly, you have modifications? Could we see them (assuming they are not in the tree, I haven't been watching closely)? Mike
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