kern/172113: [panic] [e1000] [patch] 9.1-RC1/amd64 panices in igb(4): m_getjcl: invalid cluster type

[John Baldwin]

The following reply was made to PR kern/172113; it has been noted by GNATS.

From: John Baldwin <jhb at freebsd.org>
To: bug-followup at freebsd.org,
 egrosbein at rdtc.ru
Cc:  
Subject: Re: kern/172113: [panic] [e1000] [patch] 9.1-RC1/amd64 panices in igb(4): m_getjcl: invalid cluster type
Date: Thu, 21 Feb 2013 17:12:55 -0500

 An update on this.  I think we should just use a workaround as this seems to 
 be specific to a certain set of motherboards.  This is the fix I'm using 
 locally:
 
 Index: if_igb.c
 ===================================================================
 --- if_igb.c    (revision 243732)
 +++ if_igb.c    (working copy)
 @@ -1522,6 +1522,15 @@
         u32             newitr = 0;
         bool            more_rx;
  
 +       /*
 +        * The onboard adapters on certain SuperMicro X8* boards
 +        * trigger a spurious interrupt during boot.  Since it
 +        * occurs before the interface is fully configured it
 +        * triggers a panic.  Ignore the interrupt instead.
 +        */
 +       if (!(adapter->ifp->if_drv_flags & IFF_DRV_RUNNING))
 +               return;
 +
         E1000_WRITE_REG(&adapter->hw, E1000_EIMC, que->eims);
         ++que->irqs;
 
 -- 
 John Baldwin