[dpdk-dev] [dpdk-stable] ugb_uio: r3.8xlarge bind failure

[Ferruh Yigit]

On 11/9/2017 5:42 PM, Ferruh Yigit wrote:
> On 11/9/2017 9:20 AM, Gregory Etelson wrote:
>> Hello,
>>
>> There are some AWS R3.8XLARGE instances 
>> that fail to bind Intel 10G VFs with igb_uio [c05cb4f939082]. 
> 
> Hi Gregory,
> 
> Will you dig this issue more? Please keep us updated.
> 
>> System dmeg log show this backtrace:
>>
>> igb_uio: probe of 0000:00:05.0 failed with error -16
>> IRQ handler type mismatch for IRQ 0
>> current handler: timer
>> Pid: 3619, comm: bash Not tainted 2.6.32-642.15.1.el6.x86_64 #1
>> Call Trace:
>>  [<ffffffff810f49e2>] ? __setup_irq+0x382/0x3c0
>>  [<ffffffffa03202a0>] ? uio_interrupt+0x0/0x48 [uio]
>>  [<ffffffff810f51e3>] ? request_threaded_irq+0x133/0x230
>>  [<ffffffffa0320193>] ? __uio_register_device+0x553/0x610 [uio]
>>  [<ffffffffa032698f>] ? igbuio_pci_probe+0x290/0x47a [igb_uio]

Here igb_uio probe() calls request_irq(), this behavior changed in latest code.

Can you please double check that you are using latest code?

Thanks,
ferruh

>>  [<ffffffff8129d00a>] ? kobject_get+0x1a/0x30
>>  [<ffffffff812c04f7>] ? local_pci_probe+0x17/0x20
>>  [<ffffffff812c16e1>] ? pci_device_probe+0x101/0x120
>>  [<ffffffff81382152>] ? driver_sysfs_add+0x62/0x90
>>  [<ffffffff813823fa>] ? driver_probe_device+0xaa/0x3a0
>>  [<ffffffff8138153a>] ? driver_bind+0xca/0x110
>>  [<ffffffff813805dc>] ? drv_attr_store+0x2c/0x30
>>  [<ffffffff812171c5>] ? sysfs_write_file+0xe5/0x170
>>  [<ffffffff81199e48>] ? vfs_write+0xb8/0x1a0
>>  [<ffffffff8119b336>] ? fget_light_pos+0x16/0x50
>>  [<ffffffff8119a981>] ? sys_write+0x51/0xb0
>>
>> The VFs can be returned back to kernel ixgbevf driver with no faults. 
>>
>> The instances can bind VFs with igb_uio[b58eedfc7dd57]
>>
>> I could not find yet why some R3.8XLARGE instances can bind IXGBE VFs with 
>> igb_uio while other fail
>>
>> lspci -vvv -s 0000:00:05.0
>> 00:05.0 Ethernet controller: Intel Corporation 82599 Ethernet Controller 
>> Virtual Function (rev 01)
>>         Physical Slot: 5
>>         Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
>> Stepping- SERR- FastB2B- DisINTx+
>>         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- 
>> <TAbort- <MAbort- >SERR- <PERR- INTx-
>>         Latency: 64
>>         Region 0: Memory at f3010000 (64-bit, prefetchable) [size=16K]
>>         Region 3: Memory at f3014000 (64-bit, prefetchable) [size=16K]
>>         Capabilities: [70] MSI-X: Enable+ Count=3 Masked-
>>                 Vector table: BAR=3 offset=00000000
>>                 PBA: BAR=3 offset=00002000
>>         Kernel driver in use: ixgbevf
>>         Kernel modules: ixgbevf
>>
>> Regards,
>> Gregory
>>
>