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Date:	Tue, 26 Aug 2014 17:54:24 +0200
From:	William Dauchy <>
To:	"Fujinaka, Todd" <>
Cc:	"Wyborny, Carolyn" <>,
	William Dauchy <>,
	"Williams, Mitch A" <>,
	"" <>,
	e1000-devel <>,
	"Kirsher, Jeffrey T" <>
Subject: Re: igbvf warning on 3.14.x

On Aug26 15:25, Fujinaka, Todd wrote:
> Can you please send clear repro steps and I'll submit it to our lab for repro. We'll need what equipment you're running (on both sides of the link), the kind of traffic you're running, the OS & kernel you're running, etc.

the switch used is a cisco C6506
the server is a dell C6100
the network card intel 82576 Gigabit Network Connection

I'm using a linux stable release v3.14.x (last version)
the boot cmdline has igb.max_vfs=2 as argument
no specific traffic but the machine is booting through pxe boot using

the trace is a bit random at boot time (some boot are clean)
here is a the trace as a reminder:

igbvf 0000:01:10.3: PF still resetting
igbvf 0000:01:10.1: PF still resetting
------------[ cut here ]------------
WARNING: CPU: 11 PID: 1 at
drivers/net/ethernet/intel/igbvf/netdev.c:1718 igbvf_close+0x66/0x70()
CPU: 11 PID: 1 Comm: swapper/0 Not tainted 3.14.17 #1
Hardware name: Dell       C6100           /0D61XP, BIOS 1.69 06/22/2012
 0000000000000009 ffffffffa95a5d15 0000000000000000 ffffffffa90954e8
 ffff880c1d33e000 ffff880c1d33e7c0 8000000000000000 0000000000000001
 0000000000000001 ffffffffa93a6676 ffff880c1d33e000 ffffc9000624bdb8
Call Trace:
 [<ffffffffa95a5d15>] ? dump_stack+0x49/0x7c
 [<ffffffffa90954e8>] ? warn_slowpath_common+0x68/0x80
 [<ffffffffa93a6676>] ? igbvf_close+0x66/0x70
 [<ffffffffa946d878>] ? __dev_close_many+0x88/0xe0
 [<ffffffffa946d9f5>] ? __dev_close+0x25/0x40
 [<ffffffffa947440b>] ? __dev_change_flags+0xab/0x180
 [<ffffffffa94744fe>] ? dev_change_flags+0x1e/0x60
 [<ffffffffa9c401fb>] ? ic_close_devs+0x2c/0x40
 [<ffffffffa9c41946>] ? ip_auto_config+0xbf3/0xec7
 [<ffffffffa9273890>] ? kset_register+0x50/0x70
 [<ffffffffa909a2fe>] ? __insert_resource+0x1e/0x130
 [<ffffffffa9c40d53>] ? root_nfs_parse_addr+0xa7/0xa7
 [<ffffffffa9c10ee5>] ? do_one_initcall+0x8c/0x107
 [<ffffffffa9c110ba>] ? kernel_init_freeable+0x15a/0x1e1
 [<ffffffffa9c10857>] ? do_early_param+0x9b/0x9b
 [<ffffffffa959e9f0>] ? rest_init+0x80/0x80
 [<ffffffffa959e9f5>] ? kernel_init+0x5/0xf0
 [<ffffffffa95ac764>] ? ret_from_fork+0x74/0xa0
 [<ffffffffa959e9f0>] ? rest_init+0x80/0x80
---[ end trace 90b2a2646f143695 ]---
igbvf 0000:01:10.1: PF still resetting
igbvf 0000:01:10.3: PF still resetting
ixgbe 0000:03:00.0: removed PHC on eth6
ixgbe 0000:03:00.1: removed PHC on eth7


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