[REG][4.8] Multicast frames sent on a VLAN interface/ethX.Y cause panic. (Regression of BZ#555070/BZ#580842 fix)

Solution Verified - Updated -

Environment

  • Red  Hat Enterprise Linux 4 Update 8
  • x86_64
  • 2.6.9-89.0.26.ELlargesmp

Issue

  • Kernel panics on the system  linux-2.6.9-net-fixup-problems-with-vlan-tagging-and-bonding-dr.patch
    (BZ#555070/BZ#580842) is applied to when multicast frames are sent on a  VLAN interface/ethX.Y.

Resolution

  • 4.8.z released: RHSA-2010-0936

Root Cause

  • linux-2.6.9-net-fixup-problems-with-vlan-tagging-and-bonding-dr.patch has a bug.

Diagnostic  Steps

  • No steps to reproduce the issue.

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