>> Please always CC the list, other UML people could answer your questions,
>> and the answers could be useful to others in the future.
> I'm sorry for that.
> I just click the "answer" button and forget watch the content of the
> "To" field.
You've done it again!
>> Note: there are issues with x86 host kernels >= 2.6.16
> Ok. Could you suggest a good stable 2.6.xx version ?
Host:
On x86: 2.6.15-skas3-v8.2
On amd64: 2.6.19.2 +skas3 + patch Jeff posted yesterday
Guest:
latest.
Antoine
>
> Regards
> Ernani
>
>
>
> 2007/2/1, Antoine Martin <[EMAIL PROTECTED]>:
>> Please always CC the list, other UML people could answer your questions,
>> and the answers could be useful to others in the future.
>>
>> > Because of the our last conversation i downloaded the sources of the
>> > last kernel version, 2.6.19.2.
>> > I am preparing myself with all pertinent information to make my first
>> > kernel compiling.
>> > I think that Linuz Torwalds said that is the best version available
>> > and if something goes wrong during the kernel execution then certainly
>> > is an user fault.
>> I guess you could say that, although the situation is a bit different
>> with UML.
>>
>> > What is the version of your host kernel ?
>> It varies. Depends on which machine.
>> > Is desirable that unl-kernel version match with the host kernel
>> version ?
>> No. If at all possible use an up-to-date host and guest.
>> Note: there are issues with x86 host kernels >= 2.6.16
>>
>> Antoine
>>
>> >
>> > Regards
>> > Ernani
>> >
>> > 2007/2/1, Antoine Martin <[EMAIL PROTECTED]>:
>> >> Haywood Floyd wrote:
>> >> > Hi Antoine.
>> >> >
>> >> > You said below "..Maybe the part that isn't statically linked
>> fails to
>> >> > load because of mismatch with your glibc version?".
>> >> > I just readed int the linux documentation project about that matter.
>> >> > Kernels configured using loadable modules need to find this
>> modules in
>> >> > certain point.
>> >> /lib/modules/`uname -r`
>> >> > This make the kernel dependent (in certain way) of the
>> >> > filesystem.
>> >> > Am i right ? If so, then when we built an uml kernel and make it
>> >> > available we also must make available the matching file system ?
>> >> Yes, (if used) the modules must be added to the filesystem.
>> >>
>> >> > I had the experience of download kernels that you have built and try
>> >> > to use them with the filesystems available at uml home page.
>> Sometimes
>> >> > the uml kernel works, sometimes doesnt.
>> >> > Could be it one possible motive ?
>> >> No, the kernels I build do not use modules.
>> >> That way, anyone can pick and choose any combination of kernel and fs
>> >> (well, that's the theory anyway)
>> >>
>> >> Antoine
>> >>
>> >>
>> >>
>> >> > That line of reasoning is correct ?
>> >> >
>> >> > Regards
>> >> > Ernani
>> >> >
>> >> > 2007/2/1, Antoine Martin <[EMAIL PROTECTED]>:
>> >> >> Pravin wrote:
>> >> >> > Thanx for reply.
>> >> >> >
>> >> >> > I changed my host kernel to 2.6.15 and tried to run those
>> >> >> precompiled and
>> >> >> > manually compiled 2.6.19.2 kernels. but I was facing same
>> problem.
>> >> >> >
>> >> >> > {{{
>> >> >> > $ ./liunx ubd0=FedoraCore5-x86-root_fs
>> >> >> > Checking PROT_EXEC mmap in /tmp...OK
>> >> >> > Checking for the skas3 patch in the host:
>> >> >> > - /proc/mm...not found
>> >> >> > - PTRACE_FAULTINFO...not found
>> >> >> > - PTRACE_LDT...not found
>> >> >> > UML running in SKAS0 mode
>> >> >> >
>> >> >> > $
>> >> >> > }}}
>> >> >> >
>> >> >> >
>> >> >>
>> >>
>> ------------------------------------------------------------------------
>> >> >> > I also tried to use older kernel for guest kernel
>> >> >> > I tried with precompiled kernel 2.6.14.4 from
>> >> >> > http://uml.nagafix.co.uk/kernels/kernel32-2.6.14.4-bs3
>> >> >> > but it also gave same problem.
>> >> >> >
>> >> >> > but in case of mannual compilation, there was some progress.
>> >> >> > I downloaded 2.6.14.7 and compiled it with UML.
>> >> >> > but then I got
>> >> >> >
>> >> >> > {{{
>> >> >> > $ ./linux ubd0=FedoraCore5-x86-root_fs
>> >> >> > ..
>> >> >> > ..
>> >> >> > ..
>> >> >> > VFS: Cannot open root device "98:0" or unknown-block(98,0)
>> >> >> > Please append a correct "root=" boot option
>> >> >> > Kernel panic - not syncing: VFS: Unable to mount root fs on
>> >> >> > unknown-block(98,0)
>> >> >> > }}}
>> >> >> > When previously (a week before) i got this problem, I was been
>> >> >> advised to
>> >> >> > move to newer version or kernel.
>> >> >> How about adding root=/dev/ubda to the linux command?
>> >> >>
>> >> >> So it looks like the versions that I have built don't work for you.
>> >> I am
>> >> >> not sure why. Maybe the part that isn't statically linked fails to
>> >> load
>> >> >> because of mismatch with your glibc version?
>> >> >> Jeff or Blaisorblade understand this better than I do. (CCed list)
>> >> >>
>> >> >> >
>> >> >>
>> >>
>> -------------------------------------------------------------------------------------------------------------
>>
>>
>> >>
>> >> >>
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > Currently I am having kernel 2.6.19.2 compiled with ARCH=um
>> and its
>> >> >> working
>> >> >> > fine.
>> >> >> > But SELinux is disabled.
>> >> >> >
>> >> >> > so, is it possible to change some kernel configuration parameters
>> >> and
>> >> >> > enable
>> >> >> > SELinux in same 2.6.19.2 kernel which is working ??
>> >> >> The SELinux options are in the Security section, just enable them.
>> >> >> If the kernel you compiled yourself works it should make little
>> >> >> difference.
>> >> >>
>> >> >>
>> >> >> Antoine
>> >> >>
>> >> >>
>> >> >>
>> >> >>
>> >> >>
>> >> >>
>> >> >> >
>> >> >> > On 2/1/07, Antoine Martin <[EMAIL PROTECTED]> wrote:
>> >> >> >>
>> >> >> >> Hi,
>> >> >> >>
>> >> >> >> You are not doing anything wrong, if you check at the top of the
>> >> >> page at
>> >> >> >> http://uml.nagafix.co.uk/
>> >> >> >> It does mention the fact that there are problems with recent
>> host
>> >> >> >> kernels (>=2.6.16). I can only suggest that you try an older
>> host
>> >> >> kernel
>> >> >> >> until the x86 bug is fixed.
>> >> >> >>
>> >> >> >> Antoine
>> >> >> >>
>> >> >> >> (I'll top post, bottom-post or inline-reply whenever I feel like
>> >> it)
>> >> >> >>
>> >> >> >> Pravin wrote:
>> >> >> >> > Hi,
>> >> >> >> > I was trying to make SELinux work on UML with 32 bit kernel
>> >> >> 2.6.19.2.
>> >> >> >> >
>> >> >> >> > I downloaded the latest kernel souce code from
>> >> >> >> > http://www.kernel.org/pub/linux/kernel/v2.6/
>> >> >> >> >
>> >> >> >> >
>> >> >> >> > As, it is supposed to have both UML and SELinux within it.
>> >> >> >> >
>> >> >> >> > I got the ".config" file from
>> >> >> >> > http://uml.nagafix.co.uk/kernels/kernel32-2.6.19.2.config
>> >> >> >> >
>> >> >> >> >
>> >> >> >> > After compilation as per instructions from page
>> >> >> >> > http://uml.nagafix.co.uk/kernels/
>> >> >> >> > When I ran this kernel, it stoped immediately after printing
>> >> "UML
>> >> >> >> running
>> >> >> >> > in SKAS0 mode" without throwing any error message.
>> >> >> >> >
>> >> >> >> > I got following as output when I ran UML kernel complied from
>> >> >> 2.6.19.2
>> >> >> >> >
>> >> >> >> > {{{
>> >> >> >> > $ ./linux ubd0=FedoraCore5-x86-root_fs
>> >> >> >> > Checking that ptrace can change system call numbers...OK
>> >> >> >> > Checking syscall emulation patch for ptrace...OK
>> >> >> >> > Checking advanced syscall emulation patch for ptrace...OK
>> >> >> >> > Checking for tmpfs mount on /dev/shm...nothing mounted on
>> >> /dev/shm
>> >> >> >> > Checking PROT_EXEC mmap in /tmp/...OK
>> >> >> >> > Checking for the skas3 patch in the host:
>> >> >> >> > - /proc/mm...not found
>> >> >> >> > - PTRACE_FAULTINFO...not found
>> >> >> >> > - PTRACE_LDT...not found
>> >> >> >> > UML running in SKAS0 mode
>> >> >> >> >
>> >> >> >> > $
>> >> >> >> > }}}
>> >> >> >> >
>> >> >> >> >
>> >> >> >> > I have also applied the vm non-standard split patch to the
>> >> >> kernel, but
>> >> >> >> > still
>> >> >> >> > it behaves in same way.
>> >> >> >> >
>> >> >> >> >
>> >> >> >> > I also downloaded the precompiled kernels from
>> >> >> >> > http://uml.nagafix.co.uk/kernels/ but they also gave same
>> >> behaviour.
>> >> >> >> >
>> >> >> >> > I am trying these experiments on Debian x86 machine with
>> kernel
>> >> >> 2.6.18
>> >> >> >> >
>> >> >> >> > The filesystem used by me is from
>> >> >> >> >
>> http://uml.nagafix.co.uk/FedoraCore5/FedoraCore5-x86-root_fs.bz2
>> >> >> >> >
>> >> >> >> > Can I know what wrong steps I am doing ? Do I need to
>> change the
>> >> >> >> > configuration file ?
>> >> >> >> > or I need to have special file system to run SELinux on UML ?
>> >> >> >> >
>> >> >> >> >
>> >> >> >> > Thank you
>> >> >> >> >
>> >> >> >> >
>> >> >> >> >
>> >> >> >>
>> >> >>
>> >>
>> ------------------------------------------------------------------------
>> >> >> >> >
>> >> >> >> >
>> >> >> >>
>> >> >>
>> >>
>> -------------------------------------------------------------------------
>> >> >> >> > Using Tomcat but need to do more? Need to support web
>> services,
>> >> >> >> security?
>> >> >> >> > Get stuff done quickly with pre-integrated technology to make
>> >> >> your job
>> >> >> >> easier.
>> >> >> >> > Download IBM WebSphere Application Server v.1.0.1 based on
>> Apache
>> >> >> >> Geronimo
>> >> >> >> >
>> >> >> >>
>> >> >>
>> >>
>> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>> >> >> >> >
>> >> >> >> >
>> >> >> >> >
>> >> >> >>
>> >> >>
>> >>
>> ------------------------------------------------------------------------
>> >> >> >> >
>> >> >> >> > _______________________________________________
>> >> >> >> > User-mode-linux-user mailing list
>> >> >> >> > [email protected]
>> >> >> >> >
>> https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
>> >> >> >>
>> >> >> >>
>> >> >> >
>> >> >> >
>> >> >>
>> >> >>
>> >> >>
>> >>
>> -------------------------------------------------------------------------
>> >> >> Using Tomcat but need to do more? Need to support web services,
>> >> security?
>> >> >> Get stuff done quickly with pre-integrated technology to make
>> your job
>> >> >> easier.
>> >> >> Download IBM WebSphere Application Server v.1.0.1 based on Apache
>> >> >> Geronimo
>> >> >>
>> >>
>> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>> >> >> _______________________________________________
>> >> >> User-mode-linux-user mailing list
>> >> >> [email protected]
>> >> >> https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
>> >> >>
>> >> >
>> >>
>> >>
>> >
>>
>>
>
-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier.
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
User-mode-linux-user mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
