linux-kernel - Re: Computer fails to resume from suspend unless I rmmod jme before initiating the suspend

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Date:	Sat, 13 Feb 2016 18:38:16 -0200
From:	Diego Viola <diego.viola@...il.com>
To:	cooldavid@...ldavid.org
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Computer fails to resume from suspend unless I rmmod jme before
 initiating the suspend

On Fri, Feb 12, 2016 at 6:17 AM, Diego Viola <diego.viola@...il.com> wrote:
> On Wed, Feb 10, 2016 at 7:36 PM, Diego Viola <diego.viola@...il.com> wrote:
>> On Wed, Feb 10, 2016 at 2:19 AM, Diego Viola <diego.viola@...il.com> wrote:
>>> Hi Guo,
>>>
>>> I have an x86 computer with this network card:
>>>
>>> 02:00.0 Ethernet controller: JMicron Technology Corp. JMC260 PCI
>>> Express Fast Ethernet Controller (rev 03)
>>>
>>> Every time I initiate a suspend (systemctl suspend) the machine hangs
>>> at resume unless I unload the jme driver.
>>>
>>> Here is a Call Trace I was able to get after it hanged:
>>>
>>> <IRQ>
>>> tasklet_action+0xb0/0xd0
>>> __do_softirq+0xcf/0x290
>>> irq_exit+0xa3/0xb0
>>> do_IRQ+0x54/0xd0
>>> common_interrupt+0x82/0x82
>>>
>>> <EOI>
>>> jme_start_irq+0x84/0xa0 [jme]
>>> jme_resume+0x12f/0x210 [jme]
>>> pci_pm_resume+0x64/0xa0
>>> ? pci_pm_thaw+0x90/0x90
>>> dpm_run_callback+0x4e/0x130
>>> device_resume+0xd3/0x1f0
>>> async_resume+0x1d/0x50
>>> async_run_entry_fn+0x48/0x150
>>> process_one_work+0x14b/0x440
>>> worker_thread+0x48/0x4a0
>>> ? process_one_work+0x440/0x440
>>> kthread+0xd8/0xf0
>>> ? kthread_worker_fn+0x170/0x170
>>> ret_from_fork+0x3f/0x70
>>> ? kthread_worker_fn+0x170/0x170
>>>
>>> Please note that I had to type the calltrace above as I don't have a
>>> serial cable and netconsole didn't work for me for some reason, so
>>> there could be typos I didn't notice.
>>>
>>> I run Arch Linux (x86-64), my uname is:
>>>
>>> $ uname -a
>>> Linux myhost 4.4.1-2-ARCH #1 SMP PREEMPT Wed Feb 3 13:12:33 UTC 2016
>>> x86_64 GNU/Linux
>>>
>>> Please let me know if you have any questions or need any other information.
>>>
>>> Thanks,
>>>
>>> Diego
>>
>> I found something interesting, I can suspend/resume just fine when the
>> module is loaded and when I do this:
>>
>> $ ip link set ens34 down
>>
>> When I bring the device up again the hang still occurs.
>>
>> Diego
>
> I have tried to reproduce this problem with the latest git
> (torvalds/linux.git) and also went back to Linux 3.11 and I still got
> the hang with both, my plan was to run git bisect, but the problem
> still occurs.
>
> I opened this bug in bugzilla if it's preferred to deal with the problem there:
>
> https://bugzilla.kernel.org/show_bug.cgi?id=112351
>
> Thanks,
> Diego

So I found that disabling async as in:

$ echo 0 > /sys/power/pm_async

Helps with my issue, I can't reproduce the hang anymore, tried
suspend/resume almost ~15 times.

Diego