Re: [Xen-devel] xen-hypervisor-4.3-amd64 4.3.0-3+b1 -> Intel M/B, I/O virt. enabled, start vm -> Kernel panic

[Jo Mills <jo@xxxxxxxxxxxxxxxx>]

Hi David et al,

Just to try something, I swapped the e1000e NIC for an r8169 NIC and 
tried again.  The realtek device did not bounce up and down like the 
Intel one did, and although ifconfig said the device was up and the 
link LED on the card showed a connection, device seemed to be utterly 
dead (no reply to/from ping).  Then I got the same crash as with the 
Intel card: 

root@vm-server-22:~# [ 1057.824018] ------------[ cut here ]------------
[ 1057.824033] WARNING: at 
/build/linux-5U_ZPM/linux-3.2.57/net/sched/sch_generic.c:256 
dev_watchdog+0xf2/0x151()
[ 1057.824041] NETDEV WATCHDOG: eth0 (r8169): transmit queue 0 timed out
[ 1057.824049] Modules linked in: r8169 mii evdev snd_pcm snd_page_alloc 
snd_timer snd soundcore pcspkr coretemp xen_pcifront ext3 mbcache jbd dm_mod 
xen_blkfront
[ 1057.824089] Pid: 0, comm: swapper/0 Not tainted 3.2.0-4-amd64 #1 Debian 
3.2.57-3+deb7u2
[ 1057.824098] Call Trace:
[ 1057.824103]  <IRQ>  [<ffffffff81046cd9>] ? warn_slowpath_common+0x78/0x8c
[ 1057.824118]  [<ffffffff81046d85>] ? warn_slowpath_fmt+0x45/0x4a
[ 1057.824127]  [<ffffffff810013aa>] ? hypercall_page+0x3aa/0x1000
[ 1057.824135]  [<ffffffff812a7839>] ? netif_tx_lock+0x40/0x75
[ 1057.824143]  [<ffffffff812a79a9>] ? dev_watchdog+0xf2/0x151
[ 1057.824150]  [<ffffffff810524f8>] ? run_timer_softirq+0x19a/0x261
[ 1057.824158]  [<ffffffff812a78b7>] ? netif_tx_unlock+0x49/0x49
[ 1057.824167]  [<ffffffff8109138a>] ? handle_irq_event+0x40/0x52
[ 1057.824176]  [<ffffffff8104c36e>] ? __do_softirq+0xb9/0x177
[ 1057.824185]  [<ffffffff8121c1bd>] ? __xen_evtchn_do_upcall+0x24a/0x287
[ 1057.824194]  [<ffffffff81356e6c>] ? call_softirq+0x1c/0x30
[ 1057.824203]  [<ffffffff8100fa21>] ? do_softirq+0x3c/0x7b
[ 1057.824208]  [<ffffffff8104c5d6>] ? irq_exit+0x3c/0x99
[ 1057.824217]  [<ffffffff8121d57d>] ? xen_evtchn_do_upcall+0x27/0x32
[ 1057.824225]  [<ffffffff81356ebe>] ? xen_do_hypervisor_callback+0x1e/0x30
[ 1057.824233]  <EOI>  [<ffffffff810013aa>] ? hypercall_page+0x3aa/0x1000
[ 1057.824243]  [<ffffffff810013aa>] ? hypercall_page+0x3aa/0x1000
[ 1057.824252]  [<ffffffff8100675a>] ? xen_safe_halt+0xc/0x13
[ 1057.824258]  [<ffffffff81014614>] ? default_idle+0x47/0x7f
[ 1057.824265]  [<ffffffff8100d24c>] ? cpu_idle+0xaf/0xf2
[ 1057.824274]  [<ffffffff816abb36>] ? start_kernel+0x3b8/0x3c3
[ 1057.824282]  [<ffffffff816ad4df>] ? xen_start_kernel+0x412/0x418
[ 1057.824289] ---[ end trace eee1d2411f3779ca ]---
[ 1057.842587] r8169 0000:00:00.0: eth0: link up


Oh hum,

Any suggestions etc. all very gratefully received,

Best regards,

Jo.


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