Re: netdev watchdog enp1s0 (tg3): transmit queue 0 timed out

On Thu, Aug 31, 2017 at 11:10 PM, Frans van Berckel [off-list ref] wrote:

Dear NetDev Team,

I am new to this machine. On a marketplace website I
bought a Dell PowerEdge sc1435. Booting a today's Fedora (or even a
Debian) amd64 Live CD from usb, and goes all fine.

[    0.000000] Linux version 4.11.8-300.fc26.x86_64 (mockbuild@bkernel0
2.phx2.fedoraproject.org) (gcc version 7.1.1 20170622 (Red Hat 7.1.1-
3) (GCC) ) #1 SMP Thu Jun 29 20:09:48 UTC 2017

Until .. I plunged in the ethernet cable for the first time. I have got
console output, what frightens me a bit. It's about the driver for
bcm95721. This kernel does a DMA Status error. And next it's calling a
watchdog for enp1s0 (tg3): transmit queue 0 timed out.

[  237.169194] tg3 0000:01:00.0 enp1s0: Link is up at 1000 Mbps, full
du
plex
[  237.169335] tg3 0000:01:00.0 enp1s0: Flow control is on for TX
and
on for RX
[  237.169375] IPv6: ADDRCONF(NETDEV_CHANGE): enp1s0: link
becomes
ready
[  243.683910] tg3 0000:01:00.0 enp1s0: DMA Status
error.  Resetting
chip.
[  243.759610] hrtimer: interrupt took 9464192 ns
[  245.317566] tg3 0000:01:00.0 enp1s0: 0x00000000: 0x165914e4,
0x00100406, 0x02000021, 0x00000010

<snap> a long list of likely the same type of error codes.

Please post the entire register dump.