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
--
Charles Owens
Great Bay Software, Inc.
_______________________________________________
freebsd-stable@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-stable
To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
