Re: [Xen-devel] crash in is_xen_swiotlb_buffer

[Goncalo Gomes <Goncalo.Gomes@xxxxxxxxxxxxx>]

On Tue, 13 Mar 2012, Konrad Rzeszutek Wilk wrote:

> > (XEN) mm.c:943:d0 Attempt to map superpage without allowsuperpage flag in 
> > hypervisor
> > [    0.000000] ------------[ cut here ]------------
> > [    0.000000] WARNING: at arch/x86/xen/multicalls.c:129 
> > xen_mc_issue+0x34/0x62()
> > [    0.000000] Hardware name: PowerEdge R310
> > [    0.000000] Modules linked in:
> > [    0.000000] Pid: 0, comm: swapper Not tainted 3.2.9 #9
> > [    0.000000] Call Trace:
> > [    0.000000]  [<c104236b>] ? warn_slowpath_common+0x6a/0x7b
> > [    0.000000]  [<c1005442>] ? xen_mc_issue+0x34/0x62
> > [    0.000000]  [<c1042389>] ? warn_slowpath_null+0xd/0x10
> > [    0.000000]  [<c1005442>] ? xen_mc_issue+0x34/0x62
> > [    0.000000]  [<c1005f3b>] ? xen_set_pmd_hyper+0x3c/0x42
> > [    0.000000]  [<c102edbe>] ? set_pmd_pfn+0xde/0xf9
> > [    0.000000]  [<c168b652>] ? init_alloc_remap+0x1b3/0x216
> > [    0.000000]  [<c168aa48>] ? setup_node_data+0x4c/0x22f
> > [    0.000000]  [<c168b203>] ? T.744+0x290/0x2c2
> > [    0.000000]  [<c168b2ac>] ? T.743+0x77/0x1a1
> > [    0.000000]  [<c1025290>] ? default_get_apic_id+0x14/0x33
> > [    0.000000]  [<c168b3ed>] ? initmem_init+0x5/0xb7
> > [    0.000000]  [<c167cef4>] ? setup_arch+0x5bf/0x694
> > [    0.000000]  [<c100b840>] ? __spin_time_accum+0x26/0x36
> > [    0.000000]  [<c167852c>] ? start_kernel+0x81/0x34d
> > [    0.000000]  [<c167a258>] ? xen_start_kernel+0x554/0x55b
> > [    0.000000] ---[ end trace 4eaa2a86a8e2da22 ]---
> 
> So this is first time I am seeing this. It looks like something in 3.2 -> 
> 3.2.9
> is causing this. Can you do one more check - and just try booting the 3.2 
> virgin
> and seeing how it works?

Sure, I'll try it once I have a chance.

Goncalo

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