On Thu, Mar 3, 2016 at 3:58 PM, Tom Herbert <t...@herbertland.com> wrote:
> On Thu, Mar 3, 2016 at 3:52 PM, Eric Dumazet <eric.duma...@gmail.com> wrote:
>> On jeu., 2016-03-03 at 14:24 -0800, Tom Herbert wrote:
>>> This a kernel based on 3.10. We believe the lockups coincide with
>>> removing/readding qdiscs.
>>
>> You could backport 64153ce0a7b61b2a
>> ("net_sched: htb: do not setup default rate estimators"),
>> unless you desperately want these rate estimators...
>>Thanks for the pointer! >> How many HTB classes do you deal with ? >> > ~1500. > > One think that looks odd to me is that htb_destroy_class is not doing > an rcu_free (just kfree(cl)). I'm thinking that est_timer can run > after that kfree and be accessing some of the fields in the freed > structure (at least rate_est). I suppose that case is protected by est_lock and e->bstats == NULL. > > Tom
