[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] race in vif-common.sh
CC George (author of recent change) and Ian On Mon, Jul 03, 2017 at 01:30:09PM +0200, Andreas Kinzler wrote: > Hello > > in /etc/xen/scripts/vif-common.sh there is a function handle_iptable. > At its start there is a check for a working iptables implementation. > This check is outside the iptables lock section (claim_lock > "iptables") and even if it is only a read-only operation the > underlying iptables operation still accesses the xtables lock. I > debugged a malfunction (=race) with multiple vif-interfaces down to > the following iptables error message in the check section above: > > iptables -L -n Another app is currently holding the xtables lock. > Perhaps you want to use the -w option? > > So this check needs to be inside the lock or removed at all (iptables > should be working). > > Regards Andreas > > _______________________________________________ Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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