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SubjectRe: [3.11.4] Thunderbolt/PCI unplug oops in pci_pme_list_scan
>>> Bisection points to 928bea964827d7824b548c1f8e06eccbbc4d0d7d .
>>
>> This is "PCI: Delay enabling bridges until they're needed" by Yinghai.
>
> that double disabling should be addressed by:
>
> https://lkml.org/lkml/2013/4/25/608
>
> [PATCH] PCI: Remove duplicate pci_disable_device for pcie port

Hi Yinghai and Bjorn,
I found a related issue in the latest Bjorn/pci-next branch.

Now if we remove the pcie port device in the system, there is a warning occured.
It seems introduced after commit 928bea9 "PCI: Delay enabling bridges until they're needed".

[ 2124.129478] ------------[ cut here ]------------
[ 2124.129490] WARNING: CPU: 3 PID: 7 at drivers/pci/pci.c:1424 pci_disable_device+0x90/0xa0()
[ 2124.129492] Device pcieport
[ 2124.129492] disabling already-disabled device
[ 2124.129494] Modules linked in: binfmt_misc cpufreq_conservative cpufreq_userspace cpufreq_powersave loop bnx2 igb kvm_intel kvm dca i2c_algo_bit ptp pps_core i2c_i801 i7core_edac iTCO_wdt iTCO_vendor_support lpc_ich mfd_core edac_core acpi_cpufreq serio_raw sg button pcspkr microcode autofs4 processor thermal_sys scsi_dh_rdac scsi_dh_alua scsi_dh_emc scsi_dh_hp_sw scsi_dh ata_generic ata_piix megaraid_sas
[ 2124.129530] CPU: 3 PID: 7 Comm: kworker/u49:0 Not tainted 3.12.0-rc2-2.10-desktop+ #22
[ 2124.129533] Hardware name: Huawei Technologies Co., Ltd. Tecal RH2285 /BC11BTSA , BIOS CTSAV036 04/27/2011
[ 2124.129540] Workqueue: sysfsd sysfs_schedule_callback_work
[ 2124.129543] 0000000000000009 ffff880532cd9bb8 ffffffff8162f51c 0000000000000007
[ 2124.129547] ffff880532cd9c08 ffff880532cd9bf8 ffffffff8105060c 0000000000000286
[ 2124.129552] ffff8805329f2000 ffffffff81c67bc0 ffff8805329f2000 0000000000000000
[ 2124.129556] Call Trace:
[ 2124.129564] [<ffffffff8162f51c>] dump_stack+0x55/0x86
[ 2124.129572] [<ffffffff8105060c>] warn_slowpath_common+0x8c/0xc0
[ 2124.129576] [<ffffffff810506f6>] warn_slowpath_fmt+0x46/0x50
[ 2124.129580] [<ffffffff81345ef0>] pci_disable_device+0x90/0xa0
[ 2124.129587] [<ffffffff8135524e>] pcie_portdrv_remove+0x1e/0x30
[ 2124.129592] [<ffffffff813491d6>] pci_device_remove+0x46/0xc0
[ 2124.129598] [<ffffffff814139cf>] __device_release_driver+0x7f/0xf0
[ 2124.129602] [<ffffffff81413c5c>] device_release_driver+0x2c/0x40
[ 2124.129606] [<ffffffff81413368>] bus_remove_device+0x108/0x170
[ 2124.129610] [<ffffffff814102f0>] device_del+0x130/0x1c0
[ 2124.129614] [<ffffffff813427dc>] pci_stop_bus_device+0x9c/0xb0
[ 2124.129618] [<ffffffff81342986>] pci_stop_and_remove_bus_device+0x16/0x30
[ 2124.129622] [<ffffffff8134a599>] remove_callback+0x29/0x40
[ 2124.129625] [<ffffffff811fd7d8>] sysfs_schedule_callback_work+0x18/0x80
[ 2124.129632] [<ffffffff8106bbbd>] process_one_work+0x17d/0x470
[ 2124.129635] [<ffffffff8106c342>] worker_thread+0x122/0x380
[ 2124.129639] [<ffffffff8106c220>] ? rescuer_thread+0x330/0x330
[ 2124.129643] [<ffffffff81073330>] kthread+0xc0/0xd0
[ 2124.129647] [<ffffffff81073270>] ? kthread_create_on_node+0x130/0x130
[ 2124.129653] [<ffffffff8163dbec>] ret_from_fork+0x7c/0xb0
[ 2124.129657] [<ffffffff81073270>] ? kthread_create_on_node+0x130/0x130
[ 2124.129660] ---[ end trace 5b020b35ec6adb4c ]---


>
> Thanks
>
> Yinghai
> --
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>
> .
>


--
Thanks!
Yijing



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