Have had this problem since months, with random unexplained reboots -
replaced the board because I thought it was faulty, but I'm actually
getting it more and more... now I finally got to log the serial output:


[ 9897.901805] iret exception: 0000 [#1] SMP
[ 9897.902033] Modules linked in: xt_physdev iptable_filter ip_tables
x_tables inet_diag ipv6 bridge ext3 jbd mbcache drbd cn loop evdev
parport_pc parport i2c_i801 i2c_core pcspkr rng_core button intel_agp
agpgart shpchp pci_hotplug i82875p_edac edac_core xfs dm_mirror dm_log
dm_snapshot dm_mod raid1 md_mod sd_mod ide_cd_mod cdrom ata_piix
ata_generic libata scsi_mod piix dock floppy e1000 ide_pci_generic
ehci_hcd ide_core uhci_hcd usbcore thermal processor fan thermal_sys
[last unloaded: scsi_wait_scan]

[ 9897.904490]
[ 9897.904490] Pid: 0, comm: swapper Not tainted (2.6.26-2-xen-686 #1)
[ 9897.904490] EIP: 0061:[<c0101427>] EFLAGS: 00000086 CPU: 0
[ 9897.904490] EIP is at 0xc0101427
[ 9897.904490] EAX: 00000000 EBX: 0000000c ECX: c0389f1c EDX: f5656000
[ 9897.904490] ESI: 00000012 EDI: ce2f4e20 EBP: c0378910 ESP: c0389f0c
[ 9897.904490] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0069
[ 9897.904490] Process swapper (pid: 0, ti=c0388000 task=c035a1a0
task.ti=c0388000)
[ 9897.904490] Stack: c023cf54 00000012 00000000 00000012 00000012
c03788e0 c03788e0 00000012
[ 9897.906546] ce2f4e20 c014aa96 000006c0 c03788e0 00000000
00000012 c0105b00 00000011
[ 9897.906546] 00000000 00000001 00000000 c023d76f 00000000
00000001 f5656000 f5656000

[ 9897.906546] Call Trace:
[ 9897.906546] [<c023cf54>] startup_pirq+0xe6/0xef
[ 9897.906546] [<c014aa96>] handle_level_irq+0xc9/0xed
[ 9897.906546] [<c0105b00>] do_IRQ+0x4d/0x65
[ 9897.906546] [<c023d76f>] evtchn_do_upcall+0xfa/0x191
[ 9897.906546] [<c010412c>] hypervisor_callback+0x3c/0x44
[ 9897.906546] [<c0105f52>] xen_safe_halt+0x9f/0xb3
[ 9897.906546] [<c01028ab>] xen_idle+0x1b/0x46
[ 9897.906546] [<c0102810>] cpu_idle+0xa8/0xc0
[ 9897.906546] =======================
[ 9897.906546] Code: cc cc cc cc b8 20 00 00 00 cd 82 c3 cc cc cc cc cc
cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc b8 21 00 00 00
cd 82 <c3> cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc

[ 9897.910553] EIP: [<c0101427>] 0xc0101427 SS:ESP 0069:c0389f0c
[ 9897.910553] Kernel panic - not syncing: Fatal exception in interrupt
(XEN) Domain 0 crashed: rebooting machine in 5 seconds.


This is

ii linux-image-2.6.26-2-xen-686 2.6.26-19lenny2 Linux
2.6.26 image on i686, oldstyle Xen sup
ii xen-hypervisor-3.2-1-i386 3.2.1-2 The Xen
Hypervisor on i386



If anyone has any idea how to fix, I'd be quite happy :|

Tom



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