re(4) use-after-free
Ben Perrault
ben.perrault at gmail.com
Tue Dec 9 19:05:30 UTC 2014
Shawn, I have the same problem on a Lenovo Y40 and a few other systems with that interface. To work around it, I've done:
ifconfig re0 down
ifconfig re0 -tso
ifconfig re0 up ( and give it a go 15 seconds ) and dhclient should do it's thing.
The only way I've been able to get -tso and DHCP together at boot is to place the re0 in a lagg group.
Hope that helps,
Cheers,
-bp
"Remember - no matter where you go, there you are."
- Buckaroo Banzai
> On Dec 9, 2014, at 8:36 AM, Shawn Webb <lattera at gmail.com> wrote:
>
> Hey FreeBSD Peeps,
>
> I just got a new laptop (Lenovo Y50-70) that has a Realtek RTL8111/8168B
> NIC in it. When running `dhclient re0`, I get a message on the console from
> the kernel:
>
> Memory modified after free 0xfffff8001bd85800(2048) val=ffffffff @
> 0xfffff8001bd85800
>
> re0 fails to grab an IP via DHCP. And if I set it statically, I get 100%
> packet drops. Nothing comes in and nothing goes out.
>
> Thanks,
>
> Shawn
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