Messages in this thread | | | Date | Thu, 17 Apr 2003 08:13:26 +0300 (EEST) | From | Catalin BOIE <> | Subject | Re: [PATCH] qdisc oops fix |
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Hi!
> This is a different problem from previous one posted. Same oops in slab.c:1128. Why do you think is different.
> Theres a small window (exposed given that you are provisioning a lot > of qdiscs and running traffic at the same time) that an incoming packet > interupt will cause the BUG(). > > GFP_ATOMIC will fix it, but i wonder if it appropriate. > > Alexey or Manfred? > > cheers, > jamal > > PS:- 15mbits is not a lot of traffic ;-> Yes, I know. I was comparing 15mbit with almost no traffic on the machine running same qdiscs/filters/classes... :)
> > On Wed, 16 Apr 2003, Catalin BOIE wrote: > > > > - sch = kmalloc(size, GFP_KERNEL); > > > + sch = kmalloc(size, GFP_ATOMIC); > > > > > > mysteriously fixes the problem? Could the problem be elsewhere? > > > Can you repost what the issue was? I am not on lk and i just saw the > > > posting on a web page. > > > > With many rules (~5000 classes and ~3500 qdiscs and ~50000 filters) > > the kernel oopses in slab.c:1128. > > It happens on high rates (~15mbit). > > On low rates, doesn't. > > > > Seems that an interrupt come and broke the memory allocation. > > > > > > >>EIP; c0127ab4 <kmem_cache_grow+44/1d8> <===== > > > > >>EAX; ffffffff <END_OF_CODE+3fd31247/????> > > >>EBX; c12c52c0 <END_OF_CODE+ff6508/????> > > >>EDI; c12c52c0 <END_OF_CODE+ff6508/????> > > >>ESP; ceab1c60 <END_OF_CODE+e7e2ea8/????> > > > > Trace; c0127e0f <kmalloc+eb/110> > > Trace; c01d3cac <qdisc_create_dflt+20/bc> > > Trace; d081ecc7 <END_OF_CODE+1054ff0f/????> > > Trace; c01d5265 <tc_ctl_tclass+1cd/214> > > Trace; d0820600 <END_OF_CODE+10551848/????> > > Trace; c01d27e4 <rtnetlink_rcv+298/3bc> > > Trace; c01d0605 <__neigh_event_send+89/1b4> > > Trace; c01d7cd4 <netlink_data_ready+1c/60> > > Trace; c01d7730 <netlink_unicast+230/278> > > Trace; c01d7b73 <netlink_sendmsg+1fb/20c> > > Trace; c01c79d5 <sock_sendmsg+69/88> > > Trace; c01c8b48 <sys_sendmsg+18c/1e8> > > Trace; c0120010 <map_user_kiobuf+8/f8> > > > > >
--- Catalin(ux) BOIE catab@deuroconsult.ro - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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