Re: [uml-user] user mode linux: trinity syscall "madvise" triggers quickly BUG: Bad page map

[richard -r. w. <ric...@gm...>]

On Thu, Apr 4, 2013 at 7:04 PM, Toralf Förster <tor...@gm...>wrote:

> if SLUB is used (SLAB works fine till now with this syscall).
>
> What I get with the this trinity command line
>
> $> trinity --children 2 -c madvise
>
> 2013-04-04T19:00:29.220+02:00 trinity kernel: BUG: Bad page map in process
> trinity-child1  pte:0032d045 pmd:3932e1e1
> 2013-04-04T19:00:29.220+02:00 trinity kernel: page:0a73f5a0 count:1
> mapcount:-1 mapping:  (null) index:0x0
> 2013-04-04T19:00:29.220+02:00 trinity kernel: page flags:
> 0x404(referenced|reserved)
> 2013-04-04T19:00:29.220+02:00 trinity kernel: addr:00100000
> vm_flags:00040055 anon_vma:  (null) mapping:  (null) index:100
>

Okay, there is definitely something wrong with mapping 0x100000 in UML.
We have seen something else with mmap() already...

Thanks,
//richard