RE: A kernel panic occurred when I do some operation about vlan

[joeyli <jlee@suse.com>]

Hi Qianhuibin, 

於 二，2011-11-22 於 08:20 +0000，Qianhuibin 提到：
> We find the crash on SLES11SP1.
> 
> The igb version is 3.0.6-k2 which comes with SLES11SP1
> 

Did you file this bug to novell bugzilla:
	https://bugzilla.novell.com/

I didn't search out your bug from bugzilla, please kindly file it.
Let our experts can help.


Thank's a lot!
Joey Lee

> 
> ________________________________________
> From: Jiri Pirko [jpirko@redhat.com]
> Sent: Tuesday, November 22, 2011 15:48
> To: Qianhuibin
> Cc: jeffrey.t.kirsher@intel.com; e1000-devel@lists.sourceforge.net; davem@davemloft.net; Wuchangyi; Qinchuanyu; Zhanghaoyu
> Subject: Re: A kernel panic occurred when I do some operation about vlan
> 
> Tue, Nov 22, 2011 at 08:11:51AM CET, qianhuibin@huawei.com wrote:
> >Hi, all
> >A kernel panic occurred when I do some operation about vlan.
> >
> >
> >The operation is as below:
> >ifconfig eth2 up
> >modprobe bonding
> >modprobe 8021q
> >ifconfig bond0 up
> >ifenslave bond0 eth2
> >vconfig add eth2 3300
> >vconfig add bond0 33
> >vconfig rem eth2.3300
> >
> >
> >the panic stack is as below:
> >[<ffffffffa002f1c9>] panic_event+0x49/0x70 [ipmi_msghandler]
> >[<ffffffff80378917>] notifier_call_chain+0x37/0x70
> >[<ffffffff80372122>] panic+0xa2/0x195
> >[<ffffffff80376ed8>] oops_end+0xd8/0x140
> >[<ffffffff8001bea7>] no_context+0xf7/0x280
> >[<ffffffff8001c1a5>] __bad_area_nosemaphore+0x175/0x250
> >[<ffffffff80376318>] page_fault+0x28/0x30
> >[<ffffffffa039dabd>] igb_vlan_rx_kill_vid+0x4d/0x100 [igb]
> >[<ffffffffa044045f>] bond_vlan_rx_kill_vid+0x9f/0x290 [bonding]
> >[<ffffffffa047e636>] unregister_vlan_dev+0x136/0x180 [8021q]
> >[<ffffffffa047ed20>] vlan_ioctl_handler+0x170/0x3f0 [8021q]
> >[<ffffffff802c1d3f>] sock_ioctl+0x21f/0x280
> >[<ffffffff800e6d7f>] vfs_ioctl+0x2f/0xb0
> >[<ffffffff800e726b>] do_vfs_ioctl+0x3cb/0x5a0
> >[<ffffffff800e74e1>] sys_ioctl+0xa1/0xb0
> >[<ffffffff80007388>] system_call_fastpath+0x16/0x1b
> >[<00007f108a2b8bd7>] 0x7f108a2b8bd7
> >
> >
> >And the nic is as below:
> >[root@localhost ~]# ethtool -i eth2
> >driver: igb
> >version: 3.0.6-k2
> >firmware-version: 1.2-1
> >bus-info: 0000:04:00.0
> >
> >
> ># lspci | grep Eth
> >01:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)
> >
> >
> >kernel version：
> >2.6.32.12-0.7 also happen in 2.6.32-131
> 
> What kernel is this? RHEL? And what driver you are using? The one which
> came with kernel? In case of [yes, yes] answers I suggest filling up bug
> at bugzilla.redhat.com
> 
> Jirka
> 
> >
> >
> >I had tried the same operation on other nics, like tg3,bnx2. But they haven’t panic.
> >So I find the reason is that igb have two more netdev_ops (ndo_vlan_rx_add_vid and ndo_vlan_rx_kill_vid) than tg3 and bnx2.
> >I think the reason of panic is that when ndo_vlan_rx_kill_vid has been called, the vlgrp haven’t been correctly find.
> >
> >
> >My question is what the purpose of  "vlan_group_set_device(adapter->vlgrp, vid, NULL);" in method igb_vlan_rx_kill_vid?
> >
> >unregister_vlan_dev(vlan.c)  has done the same thing after ops->ndo_vlan_rx_kill_vid was called.
> >
> >If I delete it , Would it cause somthing bad?
> >
> >
> >qinchuanyu
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