[etherlab-users] BUG! Tx Ring full when queue awake! using ec_r8169

[Raimarius Delgado]

Hi everyone,
I am experiencing problems regarding realtek r8169. My system is flooded 
with:
[   98.153777] ec_r8169 0000:01:00.0 (unregistered net_device): BUG! Tx 
Ring full when queue awake!
[   98.164732] ec_r8169 0000:01:00.0 (unregistered net_device): BUG! Tx 
Ring full when queue awake!
[   98.175721] ec_r8169 0000:01:00.0 (unregistered net_device): BUG! Tx 
Ring full when queue awake!
[   98.185671] ec_r8169 0000:01:00.0 (unregistered net_device): BUG! Tx 
Ring full when queue awake!
[   98.196641] ec_r8169 0000:01:00.0 (unregistered net_device): BUG! Tx 
Ring full when queue awake!
[   98.207627] ec_r8169 0000:01:00.0 (unregistered net_device): BUG! Tx 
Ring full when queue awake!
[   98.218587] ec_r8169 0000:01:00.0 (unregistered net_device): BUG! Tx 
Ring full when queue awake!
[   98.229550] ec_r8169 0000:01:00.0 (unregistered net_device): BUG! Tx 
Ring full when queue awake!
[   98.240504] ec_r8169 0000:01:00.0 (unregistered net_device): BUG! Tx 
Ring full when queue awake!
[   98.251454] ec_r8169 0000:01:00.0 (unregistered net_device): BUG! Tx 
Ring full when queue awake!
[   98.262402] ec_r8169 0000:01:00.0 (unregistered net_device): BUG! Tx 
Ring full when queue awake!
[   98.273349] ec_r8169 0000:01:00.0 (unregistered net_device): BUG! Tx 
Ring full when queue awake!
[   98.284296] ec_r8169 0000:01:00.0 (unregistered net_device): BUG! Tx 
Ring full when queue awake!

I am running IgH EtherCAT 1.5.2 on top of Linux 3.14.15 using the 
real-time co-kernel Xenomai 2.6.5. The error occurs when the ec_r8169 is 
loaded and the master is connected with different products that I have 
tested:
Sanyo Sansmotion R
Maxon EPOS3

However, the error does not occur for the following servo drives though:
LS Mecapion L7
Panasonic


Does anyone have an idea what seem to be the problem?

Raimarius Delgado