[Xen-devel] xc_dom_probe_bzimage_kernel: kernel is not a bzImage

[Jed Smith <jed@xxxxxxxxxx>]

Good afternoon,

We had a report from a customer that OpenSUSE's paravirt 2.6.31.8-0.1.1 boots
inconsistently under PV-Grub.  Here is one attempt:

> root (hd0)
>  Filesystem type is ext2fs, using whole disk
> kernel /boot/vmlinuz-xen root=/dev/xvdc resume=/dev/xvdb xencons=hvc0 
> kbdtype=u
> s text nofb selinux=0 edd=off splash=silent noshell showopts
> initrd /boot/initrd-xen
> 
> ERROR Invalid kernel: xc_dom_probe_bzimage_kernel: kernel is not a bzImage
> 
> xc_dom_bzimageloader.c:350: panic: xc_dom_probe_bzimage_kernel: kernel is not 
> a bzImage
> Map 135 (4a8c46, ...) at 0x22c82000 failed: -22.
> Do_exit called!
> base is 0xbcf2f8 caller is 0x457cf
> base is 0xbcf328 caller is 0x50536
> base is 0xbcfbf8 caller is 0x505f5
> base is 0xbcfc38 caller is 0x368ae
> base is 0xbcfc78 caller is 0x26447
> base is 0xbcfcb8 caller is 0x25981
> base is 0xbcfcf8 caller is 0x25f8e
> base is 0xbcfd68 caller is 0x29f27
> base is 0xbcfd98 caller is 0x261a3
> base is 0xbcfdd8 caller is 0x17c1b
> base is 0xbcfe38 caller is 0x3a78
> base is 0xbcfe58 caller is 0x8a3e
> base is 0xbcfe68 caller is 0xa389
> base is 0xbcfe88 caller is 0x101a9
> base is 0xbcfef8 caller is 0x107cb
> base is 0xbcff68 caller is 0x3f18
> base is 0xbcff88 caller is 0x46e2f
> base is 0xbcfff0 caller is 0x31ad

And here is another where a similar message appears but our user is able to go
back to the grub menu, boot the same entry again, and have it boot after
another error:

> root (hd0)
>  Filesystem type is ext2fs, using whole disk
> kernel /boot/vmlinuz-xen root=/dev/xvdc resume=/dev/xvdb xencons=hvc0 
> kbdtype=u
> s text nofb selinux=0 edd=off splash=silent noshell showopts
> initrd /boot/initrd-xen
> 
> ERROR Invalid kernel: xc_dom_probe_bzimage_kernel: kernel is not a bzImage
> 
> xc_dom_bzimageloader.c:350: panic: xc_dom_probe_bzimage_kernel: kernel is not 
> a bzImage
> pin_table(x) returned 4879168
> 
> Error 9: Unknown boot failure
> 
> Press any key to continue...

[Strike <Return>]

> GNU GRUB  version 0.97  (552960K lower / 0K upper memory)

[Strike <Return>]

> root (hd0)
>  Filesystem type is ext2fs, using whole disk
> kernel /boot/vmlinuz-xen root=/dev/xvdc resume=/dev/xvdb xencons=hvc0 
> kbdtype=u
> s text nofb selinux=0 edd=off splash=silent noshell showopts                  
>  
> initrd /boot/initrd-xen                                                       
>  
> 
> ERROR Invalid kernel: xc_dom_probe_bzimage_kernel: kernel is not a bzImage
> 
> xc_dom_bzimageloader.c:350: panic: xc_dom_probe_bzimage_kernel: kernel is not 
> a bzImage
> close blk: backend at /local/domain/0/backend/vbd/324/51712                   
>          
> close blk: backend at /local/domain/0/backend/vbd/324/51728                   
>          
> close blk: backend at /local/domain/0/backend/vbd/324/51744                   
>          
> close blk: backend at /local/domain/0/backend/vbd/324/51760                   
>          
> [    0.000000] Reserving virtual address space above 0xf5800000               
>          
> [    0.000000] Initializing cgroup subsys cpuset                              
>          
> [    0.000000] Initializing cgroup subsys cpu                                 
>          
> [    0.000000] Linux version 2.6.31.8-0.1-xen (geeko@buildhost) (gcc version 
> 4.4.1 [gcc-4_4-branch revision 150839] (SUSE Linux) ) #1 SMP 2009-12-15 
> 23:55:40 +0100


We're suspecting kernel compression here.  Any tips or debugging we can do?

It's odd that the behavior is intermittent.

Regards,

Jed Smith
Systems Administrator
Linode, LLC
+1 (609) 593-7103 x1209
jed@xxxxxxxxxx


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