Re: [E1000-devel] 2.6.36-rc7-git2 - panic/GPF: e1000e/vlans?

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From: Nikola Ciprich
Date: Thursday, October 21, 2010 - 12:02 pm

Ok, here're the steps to reproduce the problem:

ip link set up dev eth0
vconfig add eth0 10
ip link set up dev eth0.10
brctl addbr brtest
# to bylo ok, sundá to až:
brctl add brtest eth0.10

last command causes panic in few seconds..

Interesting thing is that it're reproducible only for eth0, not for
eth1 (both are onboard 80003ES2LAN)

here's the lspci for those:
06:00.0 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit Ethernet Controller (Copper) (rev 01)
	Subsystem: Super Micro Computer Inc Unknown device 0000
	Flags: bus master, fast devsel, latency 0, IRQ 65
	Memory at d8300000 (32-bit, non-prefetchable) [size=128K]
	I/O ports at 3000 [size=32]
	Capabilities: [c8] Power Management version 2
	Capabilities: [d0] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+
	Capabilities: [e0] Express Endpoint IRQ 0
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [140] Device Serial Number 5a-19-34-ff-ff-48-30-00

06:00.1 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit Ethernet Controller (Copper) (rev 01)
	Subsystem: Super Micro Computer Inc Unknown device 0000
	Flags: bus master, fast devsel, latency 0, IRQ 66
	Memory at d8320000 (32-bit, non-prefetchable) [size=128K]
	I/O ports at 3020 [size=32]
	Capabilities: [c8] Power Management version 2
	Capabilities: [d0] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+
	Capabilities: [e0] Express Endpoint IRQ 0
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [140] Device Serial Number 5a-19-34-ff-ff-48-30-00

last but not least, I've done bisect and it leads to:
commit ae878ae280bea286ff2b1e1cb6e609dd8cb4501d
Author: Maciej Żenczykowski <maze@google.com>
Date:   Sun Oct 3 14:49:00 2010 -0700                                                                                                                                                                                                      net: Fix IPv6 PMTU disc. w/ asymmetric routes

doesn't seem to me to be related at all, but reverting really seems to fix the problem for me..
I hope it helps..
with best regards
nik



On Wed, Oct 20, 2010 at 06:36:59PM +0200, Nikola Ciprich wrote:

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Messages in current thread:
RE: [E1000-devel] 2.6.36-rc7-git2 - panic/GPF: e1000e/vlans?, Tantilov, Emil S, (Fri Oct 15, 9:58 am)
Re: [E1000-devel] 2.6.36-rc7-git2 - panic/GPF: e1000e/vlans?, Nikola Ciprich, (Sun Oct 17, 11:12 pm)
Re: [E1000-devel] 2.6.36-rc7-git2 - panic/GPF: e1000e/vlans?, Nikola Ciprich, (Thu Oct 21, 12:02 pm)
Re: [E1000-devel] 2.6.36-rc7-git2 - panic/GPF: e1000e/vlans?, Brandeburg, Jesse, (Thu Oct 21, 12:09 pm)