Reproducible crash in em/igb

[Lev Serebryakov]

 I have reproducible crash in igb and em driver on CURRENT, with KASSERT
violation if kernel is built INVARIANTS.

 All information is here:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231659

(please, start from newest comments, as first ones gives wrong
interpretation).

 I can not reproduce this crash on 11.2-STABLE, so it is regression.

 I could provide kernel binaries and corresponding crashdumps, test any
patches, etc.

-- 
// Lev Serebryakov



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