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Date:	Fri, 12 Feb 2016 06:17:18 -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 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

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