RE: [Xen-devel] potentially nasty oops on startup

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> I'm getting the following oops on startup, and I'm not quite 
> sure why.  It looks nasty though, with an invalid page being 
> mapped into a process, and a strange looking EIP ...

Ouch. Is this the unstable tree? Is it deterministic? How far through
the boot process does it happen? Could you try rolling the tree back a
couple of days and check it goes away.

Almost all the core Xen developers are currently in San Francisco
attending OSDI, so I'm afraid bug fix response times might not be quite
as good as usual.

Ian

> do_wp_page: bogus page at address 00000449
> VM: killing process kmodule
> Unable to handle kernel NULL pointer dereference at virtual 
> address 00000449
>   printing eip:
> 00001eca
> *pde = ma 0d183067 pa 0a583067
> *pte = ma 00000025 pa 55555025
>   [<c010d91c>] syscall_call+0x7/0xb
> 
> Oops: 0003 [#1]
> Modules linked in: ext3 jbd
> CPU:    0
> EIP:    c000:[<00001eca>]    Not tainted VLI
> EFLAGS: 00033206   (2.6.9-1.1009_FC4xen0) 
> EIP is at 0x1eca
> eax: 00004f03   ebx: 00000000   ecx: 00000000   edx: 00000000
> esi: 00000000   edi: 00000000   ebp: 00000fdc   esp: c8f99f24
> ds: 0000   es: 0000   ss: 0069
> Process kmodule (pid: 584, threadinfo=c8f99000 task=c8a88d30)
> Stack: 00000fd0 00001000 00001101 00000000 00000000 00000000 
> 00000000 00000000
>         00000000 00000000 00000000 00000000 00000000 00000000 
> 00000000 00000000
>         80000000 00000000 00000000 00000000 00000000 00000000 
> 00000000 00000000 Call Trace:
>   [<c010d91c>] syscall_call+0x7/0xb
> 
> Code:  Bad EIP value.
>   <6>e100: Intel(R) PRO/100 Network Driver, 3.0.27-k2-NAPI
> 
> 
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