Dear Massimo,<br><br>Thank you very much for your help! <br>It seems that part of the problem is solved.<br>Although <a href="http://kernel.org">kernel.org</a> is down I got the kernel sources from Linus Torvalds github.<br>
I tried a few kernels manually until I got one that booted as a netkit node:<br><br>=> kernel v2.6.27.0 does the uml patch ok, has issues with an already reported bug on vde_user.c, has a bug on making the kernel oldconfig (already reported), but still does not boot as a netkit node.<br>
<br><div class="gmail_quote">=> kernel v2.6.31.0 has issues with the uml patch which be skipped, has the same bug on making the kernel oldconfig (already reported), 
but still does not boot as a netkit node.<br><br>=> kernel v2.6.28.0 has issues with the uml patch which be skipped, has the same bug on making the kernel oldconfig (already reported), boots _almost_ ok as netkit node.<br>
<br>It has a fatal error on loading the "modules.dep" file from v2.6.28-0. It seems that it can't find the file belonging to kernel v2.6.28.0-k2.8. It seems that is searching on the wrong folder.. i'm not sure if it's because i've been passing the kernel path as an argument on the vstart command (a similar issue has been reported on <a href="http://list.dia.uniroma3.it/pipermail/netkit.users/2010-August/000638.html">http://list.dia.uniroma3.it/pipermail/netkit.users/2010-August/000638.html</a>)<br>
Any ideas on how to solve this modules.dep path ?<br><br>Best regards,<br>Rui Costa<br><br><br><br><br>On Mon, Sep 12, 2011 at 2:57 PM, Massimo Rimondini <span dir="ltr"><<a href="mailto:rimondin@dia.uniroma3.it">rimondin@dia.uniroma3.it</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><u></u>

  
    
  
  <div bgcolor="#ffffff" text="#000000">
    <tt>Dear Rui,<br>
      <br>
      not really useless. It may still be possible to apply them with
      minor offsets. I would give them a --dry-run try and see what
      happens.<br>
      Or it may also be that the fixes/functionalities they provide are
      no longer necessary. Consider that about half of the provided
      patches are only required for MPLS support to work.<br>
      <br>
      Regards,<br><font color="#888888">
      Massimo<br>
    </font></tt><div><div></div><div class="h5"><br>
    On 09/12/2011 02:52 PM, Costa >> wrote:
    <blockquote type="cite">Dear Massimo,<br>
      <br>
      compiling for a newer kernel won't make the UML patch useless?<br>
      I thought that the UML patch provided in netkit is specific for
      kernel 2.6.26.5.  <br>
      For a newer kernel the files are not the same or don't have the
      same content <br>
      and therefore the same patch wouldn't work correct?<br>
      <br>
      <br>
      Best Regards,<br>
      Rui Costa<br>
      <br>
      <br>
      <br>
      <div class="gmail_quote">On Sat, Sep 10, 2011 at 3:00 PM, Massimo
        Rimondini <span dir="ltr"><<a href="mailto:rimondin@dia.uniroma3.it" target="_blank">rimondin@dia.uniroma3.it</a>></span>
        wrote:<br>
        <blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
          <div bgcolor="#FFFFFF" text="#000000"> <tt>Dear Rui,<br>
              <br>
              could you try by recompiling a more recent version of the
              kernel?<br>
              The Makefile contains appropriate parameters to choose the
              release to work on, see <a href="https://github.com/maxonthegit/netkit-uml-kernel/blob/master/Makefile.devel#L35" target="_blank">https://github.com/maxonthegit/netkit-uml-kernel/blob/master/Makefile.devel#L35</a>.
              Most likely, you will need to disable MPLS support, which
              requires quite a bit of tweaking of the Makefile itself
              (or just a round of kernel compilation by hand).<br>
              <br>
              Regards,<br>
              Massimo<br>
            </tt><br>
            Il 09/09/2011 16.25, Costa >> ha scritto:
            <blockquote type="cite">
              <div>
                <div><br>
                  Hi all,<br>
                  <br>
                  I'm new with netkit as well as with kernel building
                  and I'm <br>
                  having some trouble setting up a custom kernel for
                  netkit.<br>
                  I've tried both the ways that come in netkit's
                  documentation <br>
                  (automatic and manual) and tried a few more tweaks by
                  myself.<br>
                  <br>
                  Compiling the customized kernel always goes OK, in
                  whatever <br>
                  way I do it, but the netkit's virtual machines crash
                  on <br>
                  booting. The trace results (you can check them at the
                  end of <br>
                  the e-mail below) are always extremely similar to
                  another <br>
                  issue reported on the netkit mailing list:<br>
                  <a href="http://list.dia.uniroma3.it/pipermail/netkit.users/2010-November/000686.html" target="_blank">http://list.dia.uniroma3.it/pipermail/netkit.users/2010-November/000686.html</a><br>
                  I've also tried the approach explained in this thread
                  but <br>
                  ended up with the same result as before.<br>
                  <br>
                  <br>
                  Does anyone have any hint on what is causing this or
                  how to <br>
                  solve it?<br>
                  <br>
                  Thanks in advance,<br>
                  Best Regards,<br>
                  <br>
                  Rui Costa<br>
                  <br>
                  <br>
                  <br>
                  <br>
                  <br>
                  Here is the Netkit output:<br>
                  <br>
                  ============= Starting virtual machine "pc1"
                  =============<br>
                     Kernel:    
                  /home/user-netkit/Desktop/netkit/custom-kernel/netkit/kernel/linu<br>
                  x-2.6.26.5/linux<br>
                     Memory:     32 MB<br>
                     Model fs:  
                  /home/user-netkit/Desktop/netkit/netkit/fs/netkit-fs<br>
                     Filesystem:
                  /home/user-netkit/Desktop/netkit/pc1.disk (new)<br>
                     Hostfs at:  /home/user-netkit<br>
                     Other args: sch_teql.max_equalizers=0<br>
                  <br>
                  Running ==>
                  /home/user-netkit/Desktop/netkit/custom-kernel/netkit/kernel/linux-2<br>
                  .6.26.5/linux name=pc1 title=pc1 umid=pc1 mem=36M
                  ubd0=/home/user-netkit/Desktop<br>
                  /netkit/pc1.disk,/home/user-netkit/Desktop/netkit/netkit/fs/netkit-fs

                  root=98:1<br>
                  uml_dir=/home/user-netkit/.netkit/mconsole
                  hosthome=/home/user-netkit  sch_teql.<br>
                  max_equalizers=0 quiet con0=fd:0,fd:1 con1=null
                  SELINUX_INIT=0<br>
                  Locating the bottom of the address space ... 0x10000<br>
                  Locating the top of the address space ... 0xc0000000<br>
                  Core dump limits :<br>
                          soft - 0<br>
                          hard - NONE<br>
                  0xc0000000<br>
                  Core dump limits :<br>
                          soft - 0<br>
                          hard - NONE<br>
                  0xc0000000<br>
                  Core dump limits :<br>
                          soft - 0<br>
                          hard - NONE<br>
                  0xc0000000<br>
                  Core dump limits :<br>
                          soft - 0<br>
                          hard - NONE<br>
                  Checking for tmpfs mount on /dev/shm...OK<br>
                  Checking PROT_EXEC mmap in /dev/shm/...OK<br>
                  OK<br>
                  OK<br>
                  OK<br>
                  UML running in SKAS0 mode<br>
                  Adding 2260992 bytes to physical memory to account for
                  exec-shield gap<br>
                  Checking that ptrace can change system call
                  numbers...OK<br>
                  Checking syscall emulation patch for ptrace...OK<br>
                  Checking advanced syscall emulation patch for
                  ptrace...OK<br>
                  Checking for the skas3 patch in the host:<br>
                    - /proc/mm...not found: No such file or directory<br>
                    - PTRACE_FAULTINFO...not found<br>
                    - PTRACE_LDT...not found<br>
                  *** buffer overflow detected ***:
                  /home/user-netkit/Desktop/netkit/custom-kernel<br>
                  /netkit/kernel/linux-2.6.26.5/linux terminated<br>
                  ======= Backtrace: =========<br>
/lib/tls/i686/cmov/libc.so.6(__fortify_fail+0x50)[0x1f2390]<br>
                  /lib/tls/i686/cmov/libc.so.6(+0xe12ca)[0x1f12ca]<br>
                  /lib/tls/i686/cmov/libc.so.6(+0xe0c29)[0x1f0c29]<br>
/lib/tls/i686/cmov/libc.so.6(__snprintf_chk+0x34)[0x1f0b14]<br>
/home/user-netkit/Desktop/netkit/custom-kernel/netkit/kernel/linux-2.6.26.5/linu<br>
                  x[0x808cdee]<br>
                  [0x0]<br>
                  ======= Memory map: ========<br>
                  00110000-00263000 r-xp 00000000 68:01 9438224   
                  /lib/tls/i686/cmov/libc-2.11.1.<br>
                  so<br>
                  00263000-00264000 ---p 00153000 68:01 9438224   
                  /lib/tls/i686/cmov/libc-2.11.1.<br>
                  so<br>
                  00264000-00266000 r-xp 00153000 68:01 9438224   
                  /lib/tls/i686/cmov/libc-2.11.1.<br>
                  so<br>
                  00266000-00267000 rwxp 00155000 68:01 9438224   
                  /lib/tls/i686/cmov/libc-2.11.1.<br>
                  so<br>
                  00267000-0026a000 rwxp 00000000 00:00 0<br>
                  0026a000-00272000 r-xp 00000000 68:01 9438245   
                  /lib/tls/i686/cmov/libnss_nis-2<br>
                  .<a href="http://11.1.so" target="_blank">11.1.so</a><br>
                  00272000-00273000 r-xp 00007000 68:01 9438245   
                  /lib/tls/i686/cmov/libnss_nis-2<br>
                  .<a href="http://11.1.so" target="_blank">11.1.so</a><br>
                  00273000-00274000 rwxp 00008000 68:01 9438245   
                  /lib/tls/i686/cmov/libnss_nis-2<br>
                  .<a href="http://11.1.so" target="_blank">11.1.so</a><br>
                  00276000-00291000 r-xp 00000000 68:01 9306137    /lib/<a href="http://ld-2.11.1.so" target="_blank">ld-2.11.1.so</a><br>
                  00291000-00292000 r-xp 0001a000 68:01 9306137    /lib/<a href="http://ld-2.11.1.so" target="_blank">ld-2.11.1.so</a><br>
                  00292000-00293000 rwxp 0001b000 68:01 9306137    /lib/<a href="http://ld-2.11.1.so" target="_blank">ld-2.11.1.so</a><br>
                  00402000-00404000 rwxp 00000000 00:00 0<br>
                  00429000-00446000 r-xp 00000000 68:01 9306195   
                  /lib/libgcc_s.so.1<br>
                  00446000-00447000 r-xp 0001c000 68:01 9306195   
                  /lib/libgcc_s.so.1<br>
                  00447000-00448000 rwxp 0001d000 68:01 9306195   
                  /lib/libgcc_s.so.1<br>
                  004f9000-004fc000 rwxp 00000000 00:00 0<br>
                  00681000-00694000 r-xp 00000000 68:01 9438235   
                  /lib/tls/i686/cmov/libnsl-2.11.<br>
                  1.so<br>
                  00694000-00695000 r-xp 00012000 68:01 9438235   
                  /lib/tls/i686/cmov/libnsl-2.11.<br>
                  1.so<br>
                  00695000-00696000 rwxp 00013000 68:01 9438235   
                  /lib/tls/i686/cmov/libnsl-2.11.<br>
                  1.so<br>
                  00696000-00698000 rwxp 00000000 00:00 0<br>
                  0072f000-00730000 rwxp 00000000 00:00 0<br>
                  00747000-00748000 rwxp 00000000 00:00 0<br>
                  008a2000-008a3000 r-xp 00000000 00:00 0         
                  [vdso]<br>
                  009c0000-009ca000 r-xp 00000000 68:01 9438241   
                  /lib/tls/i686/cmov/libnss_files<br>
                  -<a href="http://2.11.1.so" target="_blank">2.11.1.so</a><br>
                  009ca000-009cb000 r-xp 00009000 68:01 9438241   
                  /lib/tls/i686/cmov/libnss_files<br>
                  -<a href="http://2.11.1.so" target="_blank">2.11.1.so</a><br>
                  009cb000-009cc000 rwxp 0000a000 68:01 9438241   
                  /lib/tls/i686/cmov/libnss_files<br>
                  -<a href="http://2.11.1.so" target="_blank">2.11.1.so</a><br>
                  00d36000-00d37000 rwxp 00000000 00:00 0<br>
                  00d9b000-00d9d000 r-xp 00000000 68:01 9438258   
                  /lib/tls/i686/cmov/libutil-2.11<br>
                  .1.so<br>
                  00d9d000-00d9e000 r-xp 00001000 68:01 9438258   
                  /lib/tls/i686/cmov/libutil-2.11<br>
                  .1.so<br>
                  00d9e000-00d9f000 rwxp 00002000 68:01 9438258   
                  /lib/tls/i686/cmov/libutil-2.11<br>
                  .1.so<br>
                  00e05000-00e0b000 r-xp 00000000 68:01 9438237   
                  /lib/tls/i686/cmov/libnss_compa<br>
                  <a href="http://t-2.11.1.so" target="_blank">t-2.11.1.so</a><br>
                  00e0b000-00e0c000 r-xp 00006000 68:01 9438237   
                  /lib/tls/i686/cmov/libnss_compa<br>
                  <a href="http://t-2.11.1.so" target="_blank">t-2.11.1.so</a><br>
                  00e0c000-00e0d000 rwxp 00007000 68:01 9438237   
                  /lib/tls/i686/cmov/libnss_compa<br>
                  <a href="http://t-2.11.1.so" target="_blank">t-2.11.1.so</a><br>
                  08048000-08422000 rwxp 00000000 68:01 12327718  
                  /home/user-netkit/Desktop/netki<br>
                  t/custom-kernel/netkit/kernel/linux-2.6.26.5/linux<br>
                  08422000-08446000 rwxp 00000000 00:00 0<br>
                  0864d000-0866e000 rwxp 00000000 00:00 0         
                  [heap]<br>
                  0866e000-0a670000 rwxs 00626000 00:10 8225      
                  /dev/shm/vm_file-RhLyFA (delete<br>
                  d)<br>
                  bf8fb000-bf910000 rwxp 00000000 00:00 0         
                  [stack]<br>
                  Terminated<br>
                  <br>
                  <br>
                  <fieldset></fieldset>
                  <br>
                </div>
              </div>
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