Xen 3.4 & tg3 gigabit ethernet stalls

["René Bühlmann" <buehlmann@gmx.ch>]

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Hi all,

Some Weeks ago, i've upgraded my Xen 3.3 installation to a 3.4 Xen. The 
same time, i upgraded Dom0 Kernel to 2.6.31.2 which also made the 
interface to switch from 100Mbit to 1Gbit. Since then, the tg3 interface 
stalls about once a week and i need to reboot Xen. The problem looks 
similar to 
http://lists.xensource.com/archives/html/xen-devel/2009-07/msg00139.html 
but the solution there (adding cpuidle=0 cpufreq=none to kernel param.) 
did not help for me.

Does anyone has a solution or workaround for this or how could i debug 
the problem?

Thanks
René

Here is the dmesg output:

WARNING: at net/sched/sch_generic.c:246 dev_watchdog+0x23e/0x250()
Hardware name: ProLiant ML110 G4
NETDEV WATCHDOG: peth1 (tg3): transmit queue 0 timed out
Modules linked in:
Pid: 0, comm: swapper Not tainted 2.6.31.6 #2
Call Trace:
<IRQ>  [<ffffffff8143bbbe>] ? dev_watchdog+0x23e/0x250
[<ffffffff8143bbbe>] ? dev_watchdog+0x23e/0x250
[<ffffffff81045054>] ? warn_slowpath_common+0x74/0xd0
[<ffffffff814c1fdf>] ? br_handle_frame_finish+0x14f/0x190
[<ffffffff81045111>] ? warn_slowpath_fmt+0x51/0x60
[<ffffffff8100f10f>] ? xen_restore_fl_direct_end+0x0/0x1
[<ffffffff81503f4c>] ? _spin_unlock_irqrestore+0xc/0x10
[<ffffffff8104150f>] ? try_to_wake_up+0xbf/0x1e0
[<ffffffff8100f009>] ? xen_clocksource_get_cycles+0x9/0x20
[<ffffffff81218111>] ? strlcpy+0x41/0x50
[<ffffffff81426e6b>] ? netdev_drivername+0x3b/0x40
[<ffffffff8143bbbe>] ? dev_watchdog+0x23e/0x250
[<ffffffff8100e9a9>] ? xen_force_evtchn_callback+0x9/0x10
[<ffffffff8100f122>] ? check_events+0x12/0x20
[<ffffffff8143b980>] ? dev_watchdog+0x0/0x250
[<ffffffff8104f1ac>] ? run_timer_softirq+0x13c/0x210
[<ffffffff8104a935>] ? __do_softirq+0xa5/0x140
[<ffffffff810141ac>] ? call_softirq+0x1c/0x30
[<ffffffff8101613d>] ? do_softirq+0x4d/0x90
[<ffffffff812740be>] ? xen_evtchn_do_upcall+0x14e/0x1d0
[<ffffffff810141fe>] ? xen_do_hypervisor_callback+0x1e/0x30
<EOI>  [<ffffffff810093aa>] ? hypercall_page+0x3aa/0x1010
[<ffffffff810093aa>] ? hypercall_page+0x3aa/0x1010
[<ffffffff8100ea3c>] ? xen_safe_halt+0xc/0x20
[<ffffffff8100b825>] ? xen_idle+0x25/0x50
[<ffffffff810122a6>] ? cpu_idle+0x66/0xa0
[<ffffffff818208df>] ? start_kernel+0x2e6/0x328
[<ffffffff818229d5>] ? xen_start_kernel+0x65c/0x6dc
---[ end trace 8108a21093ed2967 ]---
tg3: peth1: transmit timed out, resetting
tg3: DEBUG: MAC_TX_STATUS[ffffffff] MAC_RX_STATUS[ffffffff]
tg3: DEBUG: RDMAC_STATUS[ffffffff] WDMAC_STATUS[ffffffff]
tg3: tg3_stop_block timed out, ofs=2c00 enable_bit=2
tg3: tg3_stop_block timed out, ofs=2000 enable_bit=2
tg3: tg3_stop_block timed out, ofs=2400 enable_bit=2
tg3: tg3_stop_block timed out, ofs=2800 enable_bit=2
tg3: tg3_stop_block timed out, ofs=3000 enable_bit=2
tg3: tg3_stop_block timed out, ofs=1400 enable_bit=2
tg3: tg3_stop_block timed out, ofs=1800 enable_bit=2
tg3: tg3_stop_block timed out, ofs=c00 enable_bit=2
tg3: tg3_stop_block timed out, ofs=4800 enable_bit=2
tg3: tg3_stop_block timed out, ofs=1000 enable_bit=2
tg3: tg3_stop_block timed out, ofs=1c00 enable_bit=2
tg3: tg3_abort_hw timed out for peth1, TX_MODE_ENABLE will not clear 
MAC_TX_MODE=ffffffff
tg3: tg3_stop_block timed out, ofs=3c00 enable_bit=2
tg3: tg3_stop_block timed out, ofs=4c00 enable_bit=2
tg3: peth1: No firmware running.
tg3: tg3_abort_hw timed out for peth1, TX_MODE_ENABLE will not clear 
MAC_TX_MODE=ffffffff
tg3: peth1: Link is down.
xenbr1: port 1(peth1) entering disabled state


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