[Bug 231659] [em][igb] 12-ALPHA8 r339259 crashes on receive under load

[Eugene Grosbein]

> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231659
> 
> --- Comment #43 from Lev A. Serebryakov <lev at FreeBSD.org> ---
> (In reply to Eric Joyner from comment #36)
> Yess! 
> 
> It helps em0 to pass all my torture tests (when I comment out this
> "optimization" twice, for lem and em). I can not test on igb now, but  belive
> it will help too.
> 
> Please, commit this fix :-)
> 

erj@ just did it, try updating to r339338