Re: [Xen-devel] Unable to handle kernel paging request at virtual address e9042464

[Andrew Theurer <habanero@xxxxxxxxxx>]

Excellent, thanks very much.  I'll bk pull and try asap.

-Andrew

Bin Ren wrote:

> I've fixed this bug in the unstable repository. It's caused by two
> improperly set memory-related parameters and an lack of initialization
> of machine-to-phys mapping for newly allocated pages for the created
> domains.
>
> - Bin
>
> On 4/25/05, Andrew Theurer <habanero@xxxxxxxxxx> wrote:
>  
>
> > On Monday 25 April 2005 16:54, Keir Fraser wrote:
> >    
> >
> > > On 25 Apr 2005, at 21:03, Jacob Gorm Hansen wrote:
> > >      
> > >
> > > > Do you know how the interface has changed, i.e. what I need to
> > > > modify in vmtools (xend is not an option since I am running with my
> > > > own userspace relinked above 0xf0000000 in dom0) to get this
> > > > working again?
> > > >        
> > > I don't think this was the problem actually, but anyway: createdomain
> > > no longer takes memsize nor initial mem size. To pin to a cpu you now
> > > use DOM0_PINCPU. To set max mem reservation you use DOM0_SETMAXMEM.
> > > To actually reserve memory you use
> > > do_dom_mem_op(MEMOP_increase_reservation).
> > >      
> > FWIW, I think I am hitting an BUG on that very changeset (1.1367) by
> > trying to start a smp domU.  I have narrowed it down the 1.1367, and I
> > am going to remove that diff from very latest bk pull an see what
> > happens.
> >
> > -Andrew
> >
> > BUG output:
> >
> > Starting domain dom1
> > ------------[ cut here ]------------
> >
> > kernel BUG at <bad filename>:46733!
> > invalid operand: 0000 [#1]
> > PREEMPT
> > Modules linked in: ipt_MASQUERADE iptable_nat ip_conntrack ip_tables
> > qla2300 qla2xxx scsi_transport_fc mptscsih mptbase
> > CPU:    0
> > EIP:    0061:[<c014c6e8>]    Not tainted VLI
> > EFLAGS: 00010286   (2.6.11-xen0-up)
> > EIP is at page_remove_rmap+0x3d/0x47
> > eax: ffffffff   ebx: 00000000   ecx: c04f771c   edx: c16fdfe0
> > esi: f48d5494   edi: 0feff067   ebp: 00001000   esp: f459de48
> > ds: 007b   es: 007b   ss: 0069
> > Process python (pid: 4300, threadinfo=f459c000 task=f76c3a80)
> > Stack: c1641640 f459c000 c0145244 c16fdfe0 0a3d5067 c01471fe 00000010
> > c16fdfe0
> >       00000000 b7525000 c04f771c b7925000 f455fb78 b7526000 00000000
> > c0145408
> >       c04f771c f455fb74 b7525000 00001000 00000000 b7525000 f455fb78
> > b7526000
> > Call Trace:
> > [<c0145244>] zap_pte_range+0x186/0x2f3
> > [<c01471fe>] do_anonymous_page+0x169/0x210
> > [<c0145408>] zap_pmd_range+0x57/0x75
> > [<c0145460>] zap_pud_range+0x3a/0x5e
> > [<c01454f8>] unmap_page_range+0x74/0x8b
> > [<c014560c>] unmap_vmas+0xfd/0x223
> > [<c0149ff4>] unmap_region+0x7b/0xe9
> > [<c014a2c8>] do_munmap+0x122/0x191
> > [<c014a37e>] sys_munmap+0x47/0x62
> > [<c010965c>] syscall_call+0x7/0xb
> > Code: 0f 98 c0 84 c0 74 1c 8b 42 08 83 c0 01 78 1c c7 44 24 04 ff ff ff
> > ff c7 04 24 10 00 00 00 e8 a3 ef fe ff 83 c4 08 c3 0f 0b eb d1 <0f> 0b
> > 8d b6 00 00 00 00 eb da 55 57 56 53 83 ec 1c 8b 4c 24 34
> > <6>note: python[4300] exited with preempt_count 1
> > scheduling while atomic: python/0x00000001/4300
> > [<c03ae564>] schedule+0x534/0x5d8
> > [<c010980b>] hypervisor_callback+0x37/0x40
> > [<c03af64d>] rwsem_down_read_failed+0x8d/0x18b
> > [<c011da4b>] .text.lock.exit+0x27/0x8c
> > [<c010a33f>] do_invalid_op+0x0/0xab
> > [<c011c212>] do_exit+0x9d/0x36b
> > [<c010a33f>] do_invalid_op+0x0/0xab
> > [<c010a02d>] do_trap+0x0/0xd5
> > [<c010a3e1>] do_invalid_op+0xa2/0xab
> > [<c014c6e8>] page_remove_rmap+0x3d/0x47
> > [<c013aa7e>] rmqueue_bulk+0x4a/0xd5
> > [<c013a94a>] prep_new_page+0x72/0x77
> > [<c013adfe>] buffered_rmqueue+0x153/0x2ba
> > [<c01097cc>] error_code+0x38/0x40
> > [<c014c6e8>] page_remove_rmap+0x3d/0x47
> > [<c0145244>] zap_pte_range+0x186/0x2f3
> > [<c01471fe>] do_anonymous_page+0x169/0x210
> > [<c0145408>] zap_pmd_range+0x57/0x75
> > [<c0145460>] zap_pud_range+0x3a/0x5e
> > [<c01454f8>] unmap_page_range+0x74/0x8b
> > [<c014560c>] unmap_vmas+0xfd/0x223
> > [<c0149ff4>] unmap_region+0x7b/0xe9
> > [<c014a2c8>] do_munmap+0x122/0x191
> > [<c014a37e>] sys_munmap+0x47/0x62
> > [<c010965c>] syscall_call+0x7/0xb
> >
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-devel
> >
> >    
>  


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