Messages in this thread | | | Date | Fri, 19 Jul 2013 15:40:37 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: mod_timer: list_add corruption: WARNING: CPU: 1 PID: 0 at lib/list_debug.c:33 __list_add+0xbe/0xd0() |
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On Fri, 19 Jul 2013, Srivatsa S. Bhat wrote: > On 07/19/2013 04:55 PM, Thomas Gleixner wrote: > > On Tue, 16 Jul 2013, Srivatsa S. Bhat wrote: > >> ------------[ cut here ]------------ > >> WARNING: CPU: 1 PID: 0 at lib/list_debug.c:33 __list_add+0xbe/0xd0() > >> list_add corruption. prev->next should be next (ffff8810396b5568), but was (null). (prev=ffff88102c1344c0). > > > > Can you please enable debugobjects? > > > > Sure Thomas, please find the new traces below, with > debug objects enabled. > Regards, > Srivatsa S. Bhat > > > ------------[ cut here ]------------ > WARNING: CPU: 1 PID: 0 at lib/debugobjects.c:260 debug_print_object+0x8e/0xb0() > ODEBUG: init active (active state 0) object type: timer_list hint: br_multicast_group_expired+0x0/0x110 [bridge]
So an active enqueued timer gets reinitialized. Not so pretty :)
> [<ffffffff812b5aee>] debug_print_object+0x8e/0xb0 > [<ffffffffa04247f0>] ? br_multicast_free_pg+0x20/0x20 [bridge] > [<ffffffff812b65e2>] ? __debug_object_init+0x42/0x3f0 > [<ffffffff812b67bf>] __debug_object_init+0x21f/0x3f0 > [<ffffffff812b69df>] debug_object_init+0x1f/0x30 > [<ffffffff81060ea9>] init_timer_key+0x39/0x100 > [<ffffffffa0425ec5>] br_ip4_multicast_query+0x155/0x380 [bridge]
Here is the offending call site. I leave that to the network wizards.
> [<ffffffffa0427eef>] br_multicast_ipv4_rcv+0x2cf/0x3d0 [bridge] > [<ffffffff8162140b>] ? _raw_spin_unlock+0x2b/0x50 > [<ffffffffa0419a9b>] ? br_fdb_update+0x1db/0x2b0 [bridge] > [<ffffffffa04284b5>] br_multicast_rcv+0x45/0x60 [bridge] > [<ffffffffa041bdfe>] br_handle_frame_finish+0x16e/0x3c0 [bridge] > [<ffffffffa041bac8>] br_handle_frame+0x238/0x400 [bridge] > [<ffffffffa041b890>] ? br_del_bridge+0x80/0x80 [bridge] > [<ffffffff81539ca7>] __netif_receive_skb_core+0x237/0x960 > [<ffffffff81539ade>] ? __netif_receive_skb_core+0x6e/0x960 > [<ffffffff8153a3f7>] __netif_receive_skb+0x27/0x70 > [<ffffffff8153c6fd>] netif_receive_skb+0x2d/0x210 > [<ffffffff81527e65>] ? __netdev_alloc_skb+0xa5/0x110 > [<ffffffffa0129a0f>] be_rx_compl_process+0xef/0x140 [be2net] > [<ffffffffa0129dc2>] be_process_rx+0xe2/0x1a0 [be2net] > [<ffffffffa0129fbd>] be_poll+0x13d/0x1d0 [be2net] > [<ffffffff8153dab8>] net_rx_action+0xd8/0x2a0 > [<ffffffff81058e19>] __do_softirq+0x149/0x400 > [<ffffffff8105922d>] irq_exit+0xed/0x100 > [<ffffffff8162d206>] do_IRQ+0x66/0xe0
Thanks,
tglx
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