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Date: Wed, 16 Sep 2015 14:19:12 -0600
Message-ID: <CANR9swNoQkh6mSkiYncEzqCzcdrD3cFW74Ld=Hj6CkBJ0Zp+CQ@mail.gmail.com> (sfid-20150916_221920_856962_642D1A49)
Subject: Re: lenovo t400 atheros ar242x ath5k bug
From: Brady Lyles <lyles.brady@gmail.com>
To: Bob Copeland <me@bobcopeland.com>
Cc: linux-wireless@vger.kernel.org
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Hi All,
wondering if there are any more questions/suggestions to resolve this issue?
Thank you!

On Thu, Aug 6, 2015 at 11:27 AM, Brady Lyles <lyles.brady@gmail.com> wrote:
> sudo lspci -vnn
>
> 00:00.0 Ethernet controller [0200]: Intel Corporation 82567LM Gigabit
> Network Connection [8086:10f5] (rev 03)
>     Subsystem: Lenovo Device [17aa:20ee]
>     Flags: bus master, fast devsel, latency 0, IRQ 38
>     Memory at fc000000 (32-bit, non-prefetchable) [size=128K]
>     Memory at fc025000 (32-bit, non-prefetchable) [size=4K]
>     I/O ports at 1840 [size=32]
>     Capabilities: [c8] Power Management version 2
>     Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
>     Capabilities: [e0] PCI Advanced Features
>     Kernel driver in use: e1000e
>     Kernel modules: e1000e
>
> 00:01.0 Ethernet controller [0200]: Qualcomm Atheros AR242x / AR542x
> Wireless Network Adapter (PCI-Express) [168c:001c] (rev 01)
>     Subsystem: Qualcomm Atheros Device [168c:0035]
>     Flags: bus master, fast devsel, latency 0, IRQ 39
>     Memory at f4300000 (64-bit, non-prefetchable) [size=64K]
>     Capabilities: [40] Power Management version 2
>     Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit-
>     Capabilities: [60] Express Legacy Endpoint, MSI 00
>     Capabilities: [90] MSI-X: Enable- Count=1 Masked-
>     Capabilities: [100] Advanced Error Reporting
>     Capabilities: [140] Virtual Channel
>     Kernel driver in use: ath5k
>     Kernel modules: ath5k
>
> On Thu, Aug 6, 2015 at 10:19 AM, Bob Copeland <me@bobcopeland.com> wrote:
>> On Thu, Aug 06, 2015 at 10:06:07AM -0600, Brady Lyles wrote:
>>> Hello all,
>>> I was recommended by the qubes-users list to ask here about an ath5k bug.
>>> It looks like my fedora 20 networking virtual machine (netvm) is
>>> trying to load the ath5k driver for the qualcomm atheros ar242x wifi
>>> module in my lenovo t400, but is choking.
>>> Here's an excerpt from netvm dmesg:
>>>
>>> [    5.399092] ath5k 0000:00:01.0: Xen PCI mapped GSI17 to IRQ39
>>> [    5.399311] ath5k 0000:00:01.0: registered as 'phy0'
>>> [    5.401297] PGD 12536067 PUD 12537067 PMD 126f5067 PTE 8010000000000464
>>> [    5.401309] Oops: 0003 [#1] SMP
>>> [    5.401315] Modules linked in: ath5k(+) ath mac80211 cfg80211
>>> rfkill e1000e ptp pps_core pcspkr coretemp hwmon dummy_hcd nfsd
>>> udc_core usbcore auth_rpcgss oid_registry usb_common exportfs nfs_acl
>>> lockd sunrpc u2mfn(O) xen_blkback binfmt_misc ext4 crc16 jbd2
>>> dm_snapshot xen_blkfront autofs4
>>> [    5.401356] CPU: 1 PID: 353 Comm: systemd-udevd Tainted: G
>>>  O 3.12.40-1.pvops.qubes.x86_64 #1
>>
>> My wild guess (not being too familiar with qubes) is that passthrough is not
>> working properly -- this:
>>
>>> [    5.401276] BUG: unable to handle kernel paging request at ffffc90000900014
>>> [    5.401287] IP: [<ffffffff81268928>] iowrite32+0x38/0x40
>>
>> ...looks like a pci write to an unusual address.
>>
>> What does output of lspci -vnn look like, run as root in the guest?
>>
>> --
>> Bob Copeland %% http://bobcopeland.com/