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Date:	Fri, 11 May 2012 11:49:59 -0700
From:	"Andy Cress" <andy.cress@...kontron.com>
To:	"netdev" <netdev@...r.kernel.org>
Subject: pch_gbe oops with vlan

Folks,

I am looking for help in debugging a pch_gbe driver oops/abort.

Kernel: version 2.6.32-220.el6.i686 (RHEL6.2)
Driver: pch_gbe version 0.91-NAPI  (source tarball we used is at https://sendfile.kontron.com/message/24tdUi6MXklnUtBLnOsumq until May 16)
NIC: 0b:00.1 Ethernet controller [0200]: Intel Corporation Platform Controller Hub EG20T Gigabit Ethernet Controller [8086:8802] (rev 02)

Configuration, with VLAN:
 eth0 (not started)
 eth0.100 = 192.168.100.1 
 eth0.200 = 192.168.200.1 
 eth0.6  = 192.168.6.1

When starting the VLAN configuration, then doing a ping test for >= 5 minutes, I get a kernel oop/abort message as shown below.  This does not happen without configuring VLAN.
Where should I look for possible causes for a transmit queue timeout like this?  

I have contacted the OKI/LAPIS driver authors, but no response so far.  I thought that this group might be able to comment from similar experiences.

Andy

May 11 11:06:09 kontron kernel: ------------[ cut here ]------------
May 11 11:06:09 kontron kernel: WARNING: at net/sched/sch_generic.c:261 dev_watchdog+0x1ec/0x200() (Not tainted)
May 11 11:06:09 kontron kernel: Hardware name: N/A
May 11 11:06:09 kontron kernel: NETDEV WATCHDOG: eth0 (pch_gbe): transmit queue 0 timed out
May 11 11:06:09 kontron kernel: Modules linked in: fuse ip6table_filter ip6_tables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle iptable_filter ip_tables tun bridge autofs4 sunrpc cpufreq_ondemand acpi_cpufreq mperf 8021q garp stp llc ipv6 ext3 jbd uinput ppdev parport_pc parport sg microcode pch_gbe(U) mii serio_raw snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc ext4 mbcache jbd2 sd_mod crc_t10dif ahci sdhci_pci sdhci mmc_core video output dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan]
May 11 11:06:09 kontron kernel: Pid: 0, comm: swapper Not tainted 2.6.32-220.el6.i686 #1
May 11 11:06:09 kontron kernel: Call Trace:
May 11 11:06:09 kontron kernel: [<c0454c81>] ? warn_slowpath_common+0x81/0xc0
May 11 11:06:09 kontron kernel: [<c07a16bc>] ? dev_watchdog+0x1ec/0x200
May 11 11:06:09 kontron kernel: [<c07a16bc>] ? dev_watchdog+0x1ec/0x200
May 11 11:06:09 kontron kernel: [<c0454d53>] ? warn_slowpath_fmt+0x33/0x40
May 11 11:06:09 kontron kernel: [<c07a16bc>] ? dev_watchdog+0x1ec/0x200
May 11 11:06:09 kontron kernel: [<c0471bfa>] ? insert_work+0x5a/0xb0
May 11 11:06:09 kontron kernel: [<c04656f9>] ? run_timer_softirq+0x139/0x2c0
May 11 11:06:09 kontron kernel: [<c0831315>] ? apic_timer_interrupt+0x31/0x38
May 11 11:06:09 kontron kernel: [<c07a14d0>] ? dev_watchdog+0x0/0x200
May 11 11:06:09 kontron kernel: [<c045be4a>] ? __do_softirq+0x8a/0x1a0
May 11 11:06:09 kontron kernel: [<c045bf9d>] ? do_softirq+0x3d/0x50
May 11 11:06:09 kontron kernel: [<c045c0f5>] ? irq_exit+0x65/0x70
May 11 11:06:09 kontron kernel: [<c0428473>] ? smp_apic_timer_interrupt+0x53/0x90
May 11 11:06:09 kontron kernel: [<c0831315>] ? apic_timer_interrupt+0x31/0x38
May 11 11:06:09 kontron kernel: [<c045007b>] ? throttle_cfs_rq+0x6b/0x130
May 11 11:06:09 kontron kernel: [<c064735f>] ? intel_idle+0xaf/0x140
May 11 11:06:09 kontron kernel: [<c075c282>] ? cpuidle_idle_call+0x72/0x100
May 11 11:06:09 kontron kernel: [<c0408964>] ? cpu_idle+0x94/0xd0
May 11 11:06:09 kontron kernel: [<c082a645>] ? start_secondary+0x20d/0x252
May 11 11:06:09 kontron kernel: ---[ end trace 3672ff56500ae344 ]---
May 11 11:06:09 kontron NetworkManager[1608]: <info> (eth0): carrier now OFF (device state 3)
May 11 11:06:09 kontron NetworkManager[1608]: <info> (eth0): device state change: 3 -> 2 (reason 40)
May 11 11:06:09 kontron NetworkManager[1608]: <info> (eth0): deactivating device (reason: 40).
May 11 11:06:10 kontron abrtd: Directory 'oops-2012-05-11-11:06:10-1924-0' creation detected
May 11 11:06:10 kontron abrt-dump-oops: Reported 1 kernel oopses to Abrt

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