On Tue, May 14, 2019 at 10:10 AM Mark Johnston <ma...@freebsd.org> wrote: > > Hi, > > I hit the following panic last night on a non-INVARIANTS kernel at > r347549. The workload involves running a number of bhyve VMs with > frequent restarts, during which a tap interface is destroyed and > recreated. I'm a bit short on time to debug this today, so while I > retry with INVARIANTS on I thought I'd also report the issue in case > anyone else is seeing it. > > The panic occurred because the ifnet's softc field is NULL.
Ah, foo. I'll have to re-examine the ioctl/destroy race... tun_destroy grabs the ioctl sx and kills off the if_softc, but it can not and should not do this before if_detach or else things go wrong because it's still a part of the bridge. _______________________________________________ email@example.com mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"