* mmotm 2010-11-23 - lockdep whinge in e1000e driver
[not found] <201011240045.oAO0jYQ5016010@imap1.linux-foundation.org>
@ 2010-11-24 4:52 ` Valdis.Kletnieks
0 siblings, 0 replies; only message in thread
From: Valdis.Kletnieks @ 2010-11-24 4:52 UTC (permalink / raw)
To: akpm, Peter Zijlstra, Ingo Molnar, Jesse Brandeburg
Cc: mm-commits, linux-kernel, netdev
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On Tue, 23 Nov 2010 16:13:06 PST, akpm@linux-foundation.org said:
> The mm-of-the-moment snapshot 2010-11-23-16-12 has been uploaded to
>
> http://userweb.kernel.org/~akpm/mmotm/
Whinges during boot while bringing up the ethernet interface:
[ 1.081504] ===================================================
[ 1.081507] [ INFO: suspicious rcu_dereference_check() usage. ]
[ 1.081509] ---------------------------------------------------
[ 1.081512] include/linux/inetdevice.h:208 invoked rcu_dereference_check() without protection!
[ 1.081514]
[ 1.081515] other info that might help us debug this:
[ 1.081516]
[ 1.081518]
[ 1.081518] rcu_scheduler_active = 1, debug_locks = 1
[ 1.081521] 3 locks held by swapper/1:
[ 1.081523] #0: (&__lockdep_no_validate__){+.+.+.}, at: [<ffffffff812d0b57>] device_lock+0xf/0x11
[ 1.081534] #1: (&__lockdep_no_validate__){+.+.+.}, at: [<ffffffff812d0b57>] device_lock+0xf/0x11
[ 1.081541] #2: (rtnl_mutex){+.+.+.}, at: [<ffffffff8142dee8>] rtnl_lock+0x12/0x14
[ 1.081549]
[ 1.081550] stack backtrace:
[ 1.081553] Pid: 1, comm: swapper Not tainted 2.6.37-rc3-mmotm1123 #3
[ 1.081555] Call Trace:
[ 1.081562] [<ffffffff81069580>] lockdep_rcu_dereference+0x9d/0xa5
[ 1.081567] [<ffffffff8147b235>] __in_dev_get_rcu.clone.12+0x3f/0x47
[ 1.081571] [<ffffffff8147b24d>] inet_get_link_af_size+0x10/0x1f
[ 1.081575] [<ffffffff8142ce16>] if_nlmsg_size+0xd5/0x111
[ 1.081579] [<ffffffff8142ecf6>] rtmsg_ifinfo+0x1f/0xeb
[ 1.081584] [<ffffffff8105d78e>] ? raw_notifier_call_chain+0xf/0x11
[ 1.081589] [<ffffffff81421ee7>] register_netdevice+0x3ea/0x410
[ 1.081593] [<ffffffff81421f47>] register_netdev+0x3a/0x4c
[ 1.081599] [<ffffffff81551cc2>] e1000_probe+0x986/0xb6f
[ 1.081604] [<ffffffff81237b2e>] local_pci_probe+0x3f/0x70
[ 1.081608] [<ffffffff81237eae>] pci_device_probe+0x65/0x96
[ 1.081614] [<ffffffff8115a82a>] ? sysfs_create_link+0xe/0x10
[ 1.081617] [<ffffffff812d0fe0>] driver_probe_device+0xe8/0x182
[ 1.081621] [<ffffffff812d10c4>] __driver_attach+0x4a/0x6b
[ 1.081625] [<ffffffff812d107a>] ? __driver_attach+0x0/0x6b
[ 1.081629] [<ffffffff812d01cf>] bus_for_each_dev+0x57/0x83
[ 1.081633] [<ffffffff812d0ca5>] driver_attach+0x19/0x1b
[ 1.081637] [<ffffffff812d08e7>] bus_add_driver+0xae/0x205
[ 1.081641] [<ffffffff812d1324>] driver_register+0xb5/0x122
[ 1.081646] [<ffffffff81b455cb>] ? e1000_init_module+0x0/0x3e
[ 1.081650] [<ffffffff812380e4>] __pci_register_driver+0x61/0xcd
[ 1.081654] [<ffffffff81b455cb>] ? e1000_init_module+0x0/0x3e
[ 1.081658] [<ffffffff81b45607>] e1000_init_module+0x3c/0x3e
[ 1.081663] [<ffffffff810002ff>] do_one_initcall+0x7a/0x12f
[ 1.081668] [<ffffffff81b1fd08>] kernel_init+0x15d/0x1e7
[ 1.081672] [<ffffffff810035d4>] kernel_thread_helper+0x4/0x10
[ 1.081678] [<ffffffff8102f845>] ? finish_task_switch+0x3f/0xe3
[ 1.081682] [<ffffffff8155b5c0>] ? restore_args+0x0/0x30
[ 1.081686] [<ffffffff81b1fbab>] ? kernel_init+0x0/0x1e7
[ 1.081690] [<ffffffff810035d0>] ? kernel_thread_helper+0x0/0x10
[ 1.081731] e1000e 0000:00:19.0: eth0: (PCI Express:2.5GB/s:Width x1) 00:24:e8:c6:ad:17
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