Panic during kernel boot, igb-init related? (8.3-RELEASE)

[Charles Owens]

On 11/1/12 2:25 AM, Eugene Grosbein wrote:
> 31.10.2012 23:58, Charles Owens пишет:
>> Hello,
>>
>> We're seeing boot-time panics in about 4% of cases when upgrading from
>> FreeBSD 8.1 to 8.3-RELEASE (i386).  This problem is subtle enough that
>> it escaped detection during our regular testing cycle... now with over
>> 100 systems upgraded we're convinced there's a real issue.  Our kernel
>> config is essentially PAE (ie. static modules ... with a few drivers
>> added/removed).  The hardware is Intel Server System SR1625UR.
>>
>> This appears to match a finding discussed in these threads, having to do
>> with timing of initialization of the igb(4)-based NICs (if I'm
>> understanding it properly):
>>
>> http://lists.freebsd.org/pipermail/freebsd-stable/2011-May/062596.html
>> http://lists.freebsd.org/pipermail/freebsd-stable/2011-June/062949.html
>> http://lists.freebsd.org/pipermail/freebsd-stable/2011-September/063867.html
>> http://lists.freebsd.org/pipermail/freebsd-stable/2011-September/063958.html
>>
>>
>> These threads include some potential patches and possibility of
>> commit/MFC... but it isn't clear that there was ever final resolution
>> (and MFC to 8-stable).  I've cc'd a few folks from back then.
>>
>> A real challenge here is the frequency of occurrence. As mentioned, it
>> only hit's a fraction of our systems.  When it _does_ hit, the system
>> may enter a reboot loop for days and then mysteriously break out of
>> it... and thereafter seem to work fine.
>>
>> I'd be very grateful for any help.  Some questions:
>>
>>    * Was there ever a final "blessed" patch?
>>        o if so, will it apply to RELENG_8_3?
>>    * Is there anything that could be said that might help us with
>>      reproducing-the-problem / testing / validating-a-fix?
>>
>>
>> Panic message is --
>>
>> panic: m_getzone: m_getjcl: invalid cluster type
>> cpuid = 0
>> KDB: stack backtrace:
>> #0 0xc059c717 at kdb_backtrace+0x47
>> #1 0xc056caf7 at panic+0x117
>> #2 0xc03c979e at igb_refresh_mbufs+0x25e
>> #3 0xc03c9f98 at igb_rxeof+0x638
>> #4 0xc03ca135 at igb_msix_que+0x105
>> #5 0xc0541e2b at intr_event_execute_handlers+0x13b
>> #6 0xc05434eb at ithread_loop+0x6b
>> #7 0xc053efb7 at fork_exit+0x97
>> #8 0xc0806744 at fork_trampoline+0x8
>>
>> Thanks very much,
>>
>> Charles
> Take a look at http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/172113 that contains
> simple workaround in followup message not involving any patching, and the fix.
>
> Eugene Grosbein
>

Eugene, thanks very much for the pointer.  This is definitely what we 
were looking for! -- Charles


Charles Owens
Great Bay Software, Inc.