Messages in this thread | | | Date | Fri, 18 Apr 2003 09:47:21 +0300 (EEST) | From | Catalin BOIE <> | Subject | Re: [PATCH] qdisc oops fix |
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> Ok, I stand corrected. Tomas is right- same problem. You had htb loaded > as a module, the other person had it compiled in ;-> > Get yourself upgraded ;-> I surely will!
> > cheers, > jamal > > On Thu, 17 Apr 2003, Catalin BOIE wrote: > > > > Catalin, Can you what kernel that is? > > > > 2.4.20pre10 works ok but 2.4.20 crash. > > With traffic -> no crash with 2.4.20. Without traffic, on other machine, > > no crash. > > > > > > > > It's triggered, because someone does something like > > > > spin_lock_bh(&my_lock); > > > > p = kmalloc(,GFP_KERNEL); > > > > > > > > I don't like the proposed fix: usually code that calls > > > > kmalloc(,GFP_KERNEL) assumes that it runs at process space, e.g. uses > > > > semaphores, or non-bh spinlocks, etc. > > > > slab just happens to contain a test that complains about illegal calls. > > > > > > ok. Nice. > > > > > > > > > > > >>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> > > > > >> > > > > >> > > > > >> > > > > >> > > > > I don't understand the backtrace. Were any modules loaded? Perhaps > > > > 0xd081ecc7 is a module. > > > > > > > > > > Probably a module. Again Catalin, run no modules. > > It's a production machine. I cannot test this. We plan to replace the > > machine, so I can test then. > > > > > > I'd add a > > > > if(in_interrupt()) show_stack(NULL); > > > > into qdisc_create_dflt(), and try to reproduce the bug without modules. > > > > > > > > > > Catalin - again instead of your fix can you please add this call? > > See above. I cannot test now. I'm very sorry! > > > > > cheers, > > > jamal > > > > > > > --- > > Catalin(ux) BOIE > > catab@deuroconsult.ro > > > > >
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