On Tue, Jun 21, 2005 at 11:28:36AM +0200, Jeremie Le Hen wrote: J> > IMHO, this looks like a race. The route is not locked, when J> > its llinfo is edited. J> > J> > Probably the mbuf was freed when arp reply arrived and la_hold was send. J> > Look into in_arpinput() near 736: J> > J> > (*ifp->if_output)(ifp, la->la_hold, rt_key(rt), rt); J> > la->la_hold = 0; J> > J> > Yeah, I have just triggered another panic running 15 instances of this J> > script on SMP box: J> > J> > ( J> > while (true); do J> > arp -d 81.19.64.111 >/dev/null 2>&1; J> > ping -c 1 -t 1 81.19.64.111 >/dev/null 2>&1; J> > done J> > ) & J> > J> > But my duplicate free is in fxp_txeof(). This means that output thread has J> > won the race. J> J> This explanation sounds good but my box is an UP with PREEMPTION. J> Is is supposed to be also possible in this case ?
I guess yes, because of preemption. -- Totus tuus, Glebius. GLEBIUS-RIPN GLEB-RIPE _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
