Re: WARNING: at net/ipv4/tcp_input.c:3418

On 2012.03.06 at 00:46 -0500, Neal Cardwell wrote:

On Wed, Feb 29, 2012 at 12:41 PM, Christian Kujau [off-list ref] wrote:

quoted

This is still happening with 3.3.0-rc5, .config & dmesg here:

  http://nerdbynature.de/bits/3.3.0-rc4/ipv4/

I was finally able to reproduce this issue where there are warnings
about sacked_out going negative (since 3.3.0-rc4), and my testing
shows that this patch seems to fix the issue:

  http://patchwork.ozlabs.org/patch/144844/

For folks who were seeing this problem and are so inclined, feel free
to try the latest 3.3-rc6 kernel (or davem's "net" tree in git, if
that's easier) with that patch applied, and let me know how it goes.

Thanks for tracking this down, Neal.

In my case it looks like the issue was an "once in a lifetime" event.
So no amount of testing would prove anything.

-- 
Markus