Re: [Xen-users] Kernel ops when loading dom0

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Tue, Oct 03, 2017 at 09:57:18PM +0000, Peter Mairhofer wrote:
> Hi,
> 
> After loading Xen, while loading dom0 I get the following kernel ops:
> 
> [    0.000000] PCI: Warning: Cannot find a gap in the 32bit address range
> [    0.000000] PCI: Unassigned devices with 32bit resource registers may 
> break!
> [    0.173476] BUG: unable to handle kernel paging request at ffff87fffffff804
> [    0.173982] IP: [<ffffffff8133f745>] xb_init_comms+0x15/0xe0
> [    0.173982] PGD 0
> [    0.173982] Oops: 0000 [#1] SMP
> [    0.173982] last sysfs file:
> [    0.173982] CPU 0
> [    0.173982] Modules linked in:
> [    0.173982]
> [    0.173982] Pid: 1, comm: swapper veid: 0 Not tainted 
> 2.6.32-openvz-042stab116.2-amd64 #1 042stab116_2
> [    0.173982] RIP: e030:[<ffffffff8133f745>]  [<ffffffff8133f745>] 
> xb_init_comms+0x15/0xe0
> [    0.173982] RSP: e02b:ffff8803ea90be30  EFLAGS: 00010286
> [    0.173982] RAX: ffffffff8240a8a0 RBX: ffff87fffffff000 RCX: 
> ffff8803eaadbeb0
> [    0.173982] RDX: ffffffff8240a7e0 RSI: ffffffff817f85b8 RDI: 
> ffffffff8240a890
> [    0.173982] RBP: ffff8803ea90be40 R08: ffff8803eaadbeb0 R09: 
> 0000000000000300
> [    0.173982] R10: ffff8803eaadbde8 R11: 0000000000000098 R12: 
> 0000000000000000
> [    0.173982] R13: ffff8803eaad4440 R14: 0000000000000004 R15: 
> ffffffff81a969d0
> [    0.173982] FS:  0000000000000000(0000) GS:ffff88002804f000(0000) 
> knlGS:0000000000000000
> [    0.173982] CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
> [    0.173982] CR2: ffff812000002480 CR3: 0000000001a8d000 CR4: 
> 0000000000000660
> [    0.173982] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 
> 0000000000000000
> [    0.173982] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 
> 0000000000000400
> [    0.173982] Process swapper (pid: 1, veid: 0, threadinfo ffff8803ea908000, 
> task ffff8803ea904b40)
> [    0.173982] Stack:
> [    0.173982]  ffff8803ea90be90 0000000000000000 ffff8803ea90be60 
> ffffffff8133fdec
> [    0.173982] <d> 0000000000000000 0000000000000000 ffff8803ea90be90 
> ffffffff81c7ebb8
> [    0.173982] <d> 0000000000000000 ffff8803eaad4440
> 
> System is Debian 8.9 with Xen 4.4.1.
> 
> dom0 kernel is 2.6.32-openvz-042stab116.2-amd64. This kernel supports Xen:

This Linux kernel version is _very_ old, any reason you cannot use a
more current 4.x version?

Roger.

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