Messages in this thread | | | Date | Mon, 11 Aug 2008 14:00:14 -0700 (PDT) | Subject | Re: [PATCH] BUG: using smp_processor_id() in preemptible [00000000] code: caller is __qdisc_run | From | David Miller <> |
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From: "John Kacur" <jkacur@gmail.com> Date: Mon, 11 Aug 2008 15:11:46 +0200
> __qdisc_run() calls qdisc_restart() which calls > handle_dev_cpu_collision(skb, dev, q); and then the problem shows up > here: > __get_cpu_var(netdev_rx_stat).cpu_collision++; > > The solution is to disable interrupts around the above increment. Here > is an attached patch to do so. (Thank's to Peter Zijlstra for help in > the analysis and dropping the answer in my lap, so if I got it right > it is due to his help, but if I messed it up, then I did that part all > by myself.)
__qdisc_run() always runs in software interrupt context, so I guess this is some problem with the -rt stuff running software interrupts in threads?
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