I'm getting this dump_stack when reloading rocker driver. Did some sysctl MPLS nodes not get cleaned up on NETDEV_UNREGISTER?
Steps to repro: load rocker (on system) with rocker device, rmmod rocker, and then modprobe rocker. I doubt this is specific to rocker: and re-registration of a netdev should hit it. I am using UDEV rules to rename kernel's ethX to a different name. Maybe that's what tripped it up? [ 68.587713] sysctl duplicate entry: /net/mpls/conf/eth4//input [ 68.590015] CPU: 0 PID: 2944 Comm: modprobe Not tainted 4.1.0-rc7+ #35 [ 68.591514] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.8.1-0-g4adadbd-20150316_085822-nilsson.home.kraxel.org 04/01/2014 [ 68.594401] ffff88000f521f00 ffff88000f73f848 ffffffff81443991 0000000000000006 [ 68.596885] 0000000000000000 ffff88000f73f8a8 ffffffff811a4d5a ffff88000f73f8b8 [ 68.599328] ffffffff81a9e400 0000000000000000 0000000400000020 ffff88000f73f8c8 [ 68.620961] Call Trace: [ 68.621770] [<ffffffff81443991>] dump_stack+0x4c/0x65 [ 68.623147] [<ffffffff811a4d5a>] __register_sysctl_table+0x414/0x426 [ 68.624659] [<ffffffff81432c17>] register_net_sysctl+0x10/0x12 [ 68.626052] [<ffffffff81435c85>] mpls_dev_notify+0xd6/0x26f [ 68.627403] [<ffffffff814297fa>] ? packet_notifier+0x18c/0x19a [ 68.628821] [<ffffffff81062337>] notifier_call_chain+0x3f/0x6c [ 68.630225] [<ffffffff8106236d>] __raw_notifier_call_chain+0x9/0xb [ 68.631675] [<ffffffff8106237e>] raw_notifier_call_chain+0xf/0x11 [ 68.633146] [<ffffffff8135eb6c>] call_netdevice_notifiers_info+0x4f/0x58 [ 68.634695] [<ffffffff8135ebb6>] call_netdevice_notifiers+0x11/0x13 [ 68.636175] [<ffffffff8136718b>] register_netdevice+0x2f6/0x365 [ 68.637604] [<ffffffff81367214>] register_netdev+0x1a/0x27 [ 68.638962] [<ffffffffa039d3f8>] rocker_probe+0x94d/0xc20 [rocker] [ 68.640424] [<ffffffff81300001>] ? component_bind_all+0x5b/0x190 [ 68.641861] [<ffffffff812561fa>] local_pci_probe+0x38/0x7e [ 68.643204] [<ffffffff8125630e>] pci_device_probe+0xce/0xf4 [ 68.644579] [<ffffffff81304312>] driver_probe_device+0xcc/0x23d [ 68.646220] [<ffffffff81304483>] ? driver_probe_device+0x23d/0x23d [ 68.647679] [<ffffffff813044d1>] __driver_attach+0x4e/0x6f [ 68.649051] [<ffffffff813029d0>] bus_for_each_dev+0x5a/0x8c [ 68.650402] [<ffffffff81303dc2>] driver_attach+0x19/0x1b [ 68.651773] [<ffffffff81303afd>] bus_add_driver+0xf1/0x1d6 [ 68.653305] [<ffffffff81304c23>] driver_register+0x87/0xbe [ 68.654652] [<ffffffff81255a74>] __pci_register_driver+0x5d/0x62 [ 68.656087] [<ffffffffa0378000>] ? 0xffffffffa0378000 [ 68.657367] [<ffffffffa0378039>] rocker_module_init+0x39/0x1000 [rocker] [ 68.658900] [<ffffffffa0378000>] ? 0xffffffffa0378000 [ 68.660178] [<ffffffffa0378000>] ? 0xffffffffa0378000 [ 68.661461] [<ffffffff8100030d>] do_one_initcall+0xe9/0x186 [ 68.662813] [<ffffffff8113d228>] ? kmem_cache_alloc_trace+0xee/0x100 [ 68.664316] [<ffffffff814418bf>] do_init_module+0x5b/0x1ca [ 68.665666] [<ffffffff810b2364>] load_module+0x1cf2/0x1ee1 [ 68.667002] [<ffffffff810aefed>] ? __module_get+0x29/0x29 [ 68.668336] [<ffffffff8144a4e7>] ? retint_kernel+0x10/0x10 [ 68.669694] [<ffffffff810b2666>] SyS_init_module+0x113/0x124 [ 68.671062] [<ffffffff81449957>] system_call_fastpath+0x12/0x6f -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
