Re: [Xen-devel] pv_ops DomU boot problem using pvgrub, xen 3.4.1-rc7, debian 2.6.26 dom0

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

On 07/19/09 04:18, Sander Eikelenboom wrote:
> I can't boot my PV domU domain using a pv_ops 2.6.30.1 kernel.
> Using the xenified standard debian kernel (2.6.26, the same as in dom0) in
> DomU it does boot with pvgrub.
>
> Any clues, to what to try or test ?
>   

Did you build the 2.6.30.1 kernel?  Could you try:

$ gdb vmlinux
(gdb) x/i 0xffffffff813ce1df

to see where it crashed in the kernel (assuming it did crash in the
kernel; its not entirely clear to me where the crash happened from your
info).

Also, add "earlyprink=xen" to your kernel's command line to see if
anything comes up.

Thanks,
    J

> Regards,
>
> Sander
>
> xm dmesg gives:
>
>  traps.c:437:d12 Unhandled general protection fault fault/trap [#13] on VCPU 
> 0 [ec=0000]
> (XEN) domain_crash_sync called from entry.S
> (XEN) Domain 12 (vcpu#0) crashed on cpu#0:
> (XEN) ----[ Xen-3.4.1-rc7  x86_64  debug=n  Not tainted ]----
> (XEN) CPU:    0
> (XEN) RIP:    e033:[<ffffffff813ce1df>]
> (XEN) RFLAGS: 0000000000000282   EM: 1   CONTEXT: pv guest
> (XEN) rax: 000000008000c068   rbx: ffffffff817e8740   rcx: 0000000000000068
> (XEN) rdx: 0000000000000cf8   rsi: 000000000000c000   rdi: 0000000000000000
> (XEN) rbp: ffffffff817f5e68   rsp: ffffffff817f5e20   r8:  ffffffff817f5e84
> (XEN) r9:  00000000ffffffff   r10: ffffffff817f5e80   r11: 00000000ffffffff
> (XEN) r12: 0000000000000018   r13: ffffffff817f5f80   r14: 0000002010403eb0
> (XEN) r15: 00000000003f6000   cr0: 000000008005003b   cr4: 00000000000006f0
> (XEN) cr3: 000000014f372000   cr2: 00000020117cb000
> (XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: e02b   cs: e033
> (XEN) Guest stack trace from rsp=ffffffff817f5e20:
> (XEN)    0000000000000068 00000000ffffffff 0000000000000000 ffffffff813ce1df
> (XEN)    000000010000e030 0000000000010082 ffffffff817f5e68 000000000000e02b
> (XEN)    ffffffff817e8740 ffffffff817f5e98 ffffffff814e766c 0000000000000018
> (XEN)    0000000100000000 0000302800000000 ffffffff81724500 ffffffff817f5ec8
> (XEN)    ffffffff81829333 ffffffff817f5eb8 0000000000000246 0000000000000000
> (XEN)    ffffffffffffffff ffffffff817f5f68 ffffffff81825ed4 ffffffff8167708f
> (XEN)    ffffffff816727bf 0000000000000040 ffffffff817f5f58 ffffffff817335b0
> (XEN)    0000000000000000 ffffffffffffffff 0000002010403eb0 ffffffff817f5f38
> (XEN)    ffffffff817f5fa8 ffffffff8100d231 ffffffff81860d00 ffffffff817f5f58
> (XEN)    0000000000000000 ffffffffffffffff ffffffff8185d920 0000002010403eb0
> (XEN)    00000000003f6000 ffffffff817f5fa8 ffffffff818219fe ffffffff817f5fa8
> (XEN)    ffffffff81827b17 00000000019be188 0000000000004000 000000201178c7d0
> (XEN)    0000002010403eb0 ffffffff817f5fc8 ffffffff818212bf 0000000000000018
> (XEN)    ffffffff81e58000 ffffffff817f5ff8 ffffffff81824d0e 0000000000000000
> (XEN)    0000000000000000 0000000000000000 ffffffff81e6b000 0000000000b5fd78
> (XEN)    ffffffff81dd5000 ffffffff81dd6000 ffffffff81dd7000 ffffffff81dd8000
> (XEN)    ffffffff81dd9000 ffffffff81dda000 ffffffff81ddb000 ffffffff81ddc000
> (XEN)    ffffffff81ddd000 ffffffff81dde000 ffffffff81ddf000 ffffffff81de0000
> (XEN)    ffffffff81de1000 ffffffff81de2000 ffffffff81de3000 ffffffff81de4000
> (XEN)    ffffffff81de5000 ffffffff81de6000 ffffffff81de7000 ffffffff81de8000
> (END)
>
> On the domU console trying to boot the pv_ops 2.6.30.1 kernel with pvgrub:
>
> Started domain security (id=13)
>                                Xen Minimal OS!
>   start_info: 0xa12000(VA)
>     nr_pages: 0x10000
>   shared_inf: 0xb3ad0000(MA)
>      pt_base: 0xa15000(VA)
> nr_pt_frames: 0x9
>     mfn_list: 0x992000(VA)
>    mod_start: 0x991000(VA)
>      mod_len: 4096
>        flags: 0x0
>     cmd_line:
>   stack:      0x950860-0x970860
> MM: Init
>       _text: 0x0(VA)
>      _etext: 0x617a4(VA)
>    _erodata: 0x79000(VA)
>      _edata: 0x81b00(VA)
> stack start: 0x950860(VA)
>        _end: 0x990e68(VA)
>   start_pfn: a21
>     max_pfn: 10000
> Mapping memory range 0xc00000 - 0x10000000
> setting 0x0-0x79000 readonly
> skipped 0x1000
> MM: Initialise page allocator for a9b000(a9b000)-10000000(10000000)
> MM: done
> Demand map pfns at 10001000-2010001000.
> Heap resides at 2010002000-4010002000.
> Initialising timer interface
> Initialising console ... done.
> gnttab_table mapped at 0x10001000.
> Initialising scheduler
> Thread "Idle": pointer: 0x2010002010, stack: 0xb30000
> Initialising xenbus
> Thread "xenstore": pointer: 0x20100027c0, stack: 0xb40000
> Dummy main: start_info=0x970960
> Thread "main": pointer: 0x2010002f70, stack: 0xb50000
> "main"
> vbd 2049 is hd0
> ******************* BLKFRONT for device/vbd/2049 **********
>
>
> backend at /local/domain/0/backend/vbd/13/2049
> Failed to read /local/domain/0/backend/vbd/13/2049/feature-flush-cache.
> 1048576 sectors of 512 bytes
> **************************
> vbd 2050 is hd1
> ******************* BLKFRONT for device/vbd/2050 **********
>
>
> backend at /local/domain/0/backend/vbd/13/2050
> Failed to read /local/domain/0/backend/vbd/13/2050/feature-flush-cache.
> 8388608 sectors of 512 bytes
> **************************
>
>     GNU GRUB  version 0.97  (262144K lower / 0K upper memory)
>
>  +-------------------------------------------------------------------------+
>  | Debian GNU/Linux, vmlinuz-2.6.30-1-amd64                                |
>  |                                                                         |
>  |                                                                         |
>  |                                                                         |
>  |                                                                         |
>  |                                                                         |
>  |                                                                         |
>  |                                                                         |
>  |                                                                         |
>  |                                                                         |
>  |                                                                         |
>  |                                                                         |
>  +-------------------------------------------------------------------------+
>     Use the ^ and v keys to select which entry is highlighted.
>     Press enter to boot the selected OS, 'e' to edit the
>     commands before booting, or 'c' for a command-line.
>   Booting 'Debian GNU/Linux, vmlinuz-2.6.30-1-amd64'
>
> lock
> root            (hd1)
>  Filesystem type is ext2fs, using whole disk
> kernel          /boot/vmlinuz-2.6.30.1
> initrd          /boot/initrd.img-2.6.30.1
>
> block error -2 for op 2
> close blk: backend at /local/domain/0/backend/vbd/13/2049
> block error -2 for op 2
> close blk: backend at /local/domain/0/backend/vbd/13/2050
> serveerstertje:~#
>
>
>
>   
>
>   


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