Re: Problem with re(4) Ethernet driver has resurfaced in 11-STABLE and HEAD

On Thu, May 18, 2017 at 07:04:51AM +0000, Thomas Mueller wrote:

[removed stable_at_ from CC]

> I recently updated my 10.1-STABLE to 11.0-STABLE and find I can no longer connect with the Ethernet.
> 
> dhclient re0 produces
> 
> DHCPDISCOVER on re0 to 255.255.255.255 port 67 interval 4
> DHCPDISCOVER on re0 to 255.255.255.255 port 67 interval 11
> DHCPDISCOVER on re0 to 255.255.255.255 port 67 interval 19
> DHCPDISCOVER on re0 to 255.255.255.255 port 67 interval 7
> DHCPDISCOVER on re0 to 255.255.255.255 port 67 interval 14
> DHCPDISCOVER on re0 to 255.255.255.255 port 67 interval 5
> No DHCPOFFERS received.
> No working leases in persistent database - sleeping.
> 

If you assign an static IPv4 address to re(4) are you able to use
the network interface?

> uname -a shows
> 
> FreeBSD amelia2 11.0-STABLE FreeBSD 11.0-STABLE #1 r317932: Mon May  8 23:23:37 UTC 2017     root_at_amelia2:/usr/obj/usr/src11/sys/SANDY11NC  amd64
> 
> Relevant lines from /var/run/dmesg.boot are
> 
> re0: <RealTek 8168/8111 B/C/CP/D/DP/E/F/G PCIe Gigabit Ethernet> port 0xe000-0xe0ff mem 0xf7d04000-0xf7d04fff,0xf7d00000-0xf7d03fff irq 17 at device 0.0 on pci2
> re0: Using 1 MSI-X message
> re0: Chip rev. 0x2c800000
> re0: MAC rev. 0x00100000
> miibus0: <MII bus> on re0
> rgephy0: <RTL8169S/8110S/8211 1000BASE-T media interface> PHY 1 on miibus0
> rgephy0:  none, 10baseT, 10baseT-FDX, 10baseT-FDX-flow, 100baseTX, 100baseTX-FDX, 100baseTX-FDX-flow, 1000baseT, 1000baseT-master, 1000baseT-FDX, 1000baseT-FDX-master, 1000baseT-FDX-flow, 1000baseT-FDX-flow-master, auto, auto-flow
> re0: Using defaults for TSO: 65518/35/2048
> re0: Ethernet address: d4:3d:7e:97:17:e2
> re0: netmap queues/slots: TX 1/256, RX 1/256
> 
> Problem shows much quicker in my recent build of HEAD (12-current), where 
> dhclient re0
> gives just a couple lines screen output before crashing into debugger 
> db> prompt
> 

AFAIK there was no significant re(4) changes for a long time. Could
you show us back trace information?

Thanks.