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Date:	Thu, 15 Jul 2010 16:56:46 -0700
From:	Ben Greear <greearb@...delatech.com>
To:	NetDev <netdev@...r.kernel.org>
Subject: igb:  2.6.34.1: kernel warning at igb_main.c:2080

We just saw this kernel warning on 2.6.34.1 + a few patches from the pending stable queue,
plus our own hacks (though none to igb).

We were running a modified version of pktgen traffic and at the same time
bounced the port.

This warning didn't seem to cause any real problems.

Please let us know if you would like any additional information.

]# lspci|grep Ethern
01:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
02:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
05:00.0 Ethernet controller: Intel Corporation 82575EB Gigabit Network Connection (rev 02)
05:00.1 Ethernet controller: Intel Corporation 82575EB Gigabit Network Connection (rev 02)
06:00.0 Ethernet controller: Intel Corporation 82575EB Gigabit Network Connection (rev 02)
06:00.1 Ethernet controller: Intel Corporation 82575EB Gigabit Network Connection (rev 02)


Jul 15 16:36:01 localhost kernel: ------------[ cut here ]------------
Jul 15 16:36:01 localhost kernel: WARNING: at /home/greearb/git/linux-2.6.dev.34.y/drivers/net/igb/igb_main.c:2080 igb_close+0x28/0x9f [igb]()
Jul 15 16:36:01 localhost kernel: Hardware name: X8STi
Jul 15 16:36:01 localhost kernel: Modules linked in: bridge arc4 michael_mic wanlink(P) 8021q garp xt_CT iptable_raw ipt_addrtype xt_DSCP xt_dscp xt_string 
xt_owner xt_NFQUEUE xt_multiport xt_mark xt_iprange xt_hashlimit xt_CONNMARK xt_connmark stp llc veth fuse macvlan bpctl_mod pktgen iscsi_tcp libiscsi_tcp 
libiscsi scsi_transport_iscsi nfs lockd fscache nfs_acl auth_rpcgss sunrpc ipv6 dm_multipath uinput i2c_i801 iTCO_wdt i2c_core ioatdma e1000e igb pcspkr 
iTCO_vendor_support dca ata_generic pata_acpi [last unloaded: nf_nat]
Jul 15 16:36:01 localhost kernel: Pid: 17516, comm: ip Tainted: P           2.6.34.1 #2
Jul 15 16:36:01 localhost kernel: Call Trace:
Jul 15 16:36:01 localhost kernel: [<ffffffffa002a37f>] ? igb_close+0x28/0x9f [igb]
Jul 15 16:36:01 localhost kernel: [<ffffffff81041bb6>] warn_slowpath_common+0x77/0x8f
Jul 15 16:36:01 localhost kernel: [<ffffffff81041bdd>] warn_slowpath_null+0xf/0x11
Jul 15 16:36:01 localhost kernel: [<ffffffffa002a37f>] igb_close+0x28/0x9f [igb]
Jul 15 16:36:01 localhost kernel: [<ffffffff8133c626>] __dev_close+0x73/0x86
Jul 15 16:36:01 localhost kernel: [<ffffffff8133a719>] __dev_change_flags+0xa8/0x12b
Jul 15 16:36:01 localhost kernel: [<ffffffff8133c2aa>] dev_change_flags+0x1c/0x51
Jul 15 16:36:01 localhost kernel: [<ffffffff813466bc>] do_setlink+0x273/0x482
Jul 15 16:36:01 localhost kernel: [<ffffffff810ab1bb>] ? zone_statistics+0x5e/0x63
Jul 15 16:36:01 localhost kernel: [<ffffffff8134755e>] rtnl_newlink+0x26c/0x422
Jul 15 16:36:01 localhost kernel: [<ffffffff81345a06>] ? nla_nest_start+0x1d/0x31
Jul 15 16:36:01 localhost kernel: [<ffffffff810ca997>] ? virt_to_head_page+0x9/0x2a
Jul 15 16:36:01 localhost kernel: [<ffffffff813dd1f5>] ? __mutex_lock_common+0x38e/0x3ac
Jul 15 16:36:01 localhost kernel: [<ffffffff81346ffb>] rtnetlink_rcv_msg+0x1d9/0x1f7
Jul 15 16:36:01 localhost kernel: [<ffffffff81346e22>] ? rtnetlink_rcv_msg+0x0/0x1f7
Jul 15 16:36:01 localhost kernel: [<ffffffff81356939>] netlink_rcv_skb+0x3e/0x8e
Jul 15 16:36:01 localhost kernel: [<ffffffff81346cc9>] rtnetlink_rcv+0x20/0x29
Jul 15 16:36:01 localhost kernel: [<ffffffff813567b2>] netlink_unicast+0xea/0x151
Jul 15 16:36:01 localhost kernel: [<ffffffff8133545c>] ? memcpy_fromiovec+0x42/0x73
Jul 15 16:36:01 localhost kernel: [<ffffffff81357bc8>] netlink_sendmsg+0x242/0x255
Jul 15 16:36:01 localhost kernel: [<ffffffff8132a771>] ? __sock_recvmsg_nosec+0x29/0x2b
Jul 15 16:36:01 localhost kernel: [<ffffffff8132bd02>] __sock_sendmsg+0x56/0x5f
Jul 15 16:36:01 localhost kernel: [<ffffffff8132c127>] sock_sendmsg+0xa3/0xbc
Jul 15 16:36:01 localhost kernel: [<ffffffff813351e5>] ? copy_from_user+0x28/0x30
Jul 15 16:36:01 localhost kernel: [<ffffffff8133555e>] ? verify_iovec+0x52/0x95
Jul 15 16:36:01 localhost kernel: [<ffffffff8132c368>] sys_sendmsg+0x1c6/0x22a
Jul 15 16:36:01 localhost kernel: [<ffffffff810a277f>] ? lru_cache_add_lru+0x38/0x3d
Jul 15 16:36:01 localhost kernel: [<ffffffff813de23e>] ? _raw_spin_unlock+0x2d/0x38
Jul 15 16:36:01 localhost kernel: [<ffffffff810ad802>] ? spin_unlock+0x9/0xb
Jul 15 16:36:01 localhost kernel: [<ffffffff810b0138>] ? handle_mm_fault+0x6d3/0x6f3
Jul 15 16:36:01 localhost kernel: [<ffffffff810b3a0a>] ? __vma_link_rb+0x2b/0x2d
Jul 15 16:36:01 localhost kernel: [<ffffffff810b45f7>] ? vma_link+0xcd/0xcf
Jul 15 16:36:01 localhost kernel: [<ffffffff810d9369>] ? fget_light+0x39/0x87
Jul 15 16:36:01 localhost kernel: [<ffffffff81083b91>] ? audit_syscall_entry+0xfe/0x12a
Jul 15 16:36:01 localhost kernel: [<ffffffff81009ac2>] system_call_fastpath+0x16/0x1b
Jul 15 16:36:01 localhost kernel: ---[ end trace 75242fae6dbfdf6d ]---


Thanks,
Ben

-- 
Ben Greear <greearb@...delatech.com>
Candela Technologies Inc  http://www.candelatech.com

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