[syslinux] Invalid or corrupt kernel image

Thu Sep 9 06:01:36 PDT 2010

On Thu, Sep 9, 2010 at 07:19, Heinz Haderer <ha_heinz at yahoo.de> wrote:
> Hi,
>
> I am trying to setup my own PXE boot server. I tried several PXE bootable Linux-Distributions.
> For example if I use the ubuntu netboot image from [1] it works quit well but there are a few other images they do not work in my case e.g.: RIPLinuX [2]. A friend tested this image on his PXE boot server with success. I also checked the download with md5sum.
>
> In my case I can see the boot menu [3]. If I want to boot the Linux system e.g. kernel32 I get the massage: Invalid or corrupt kernel image.
> I tried the tftp-hpa and atftpd without success. In both cases the same behavior.
>
> Maybe syslog can help you to analyze the problem:
>
> 13:03:35 dnsmasq-dhcp[67]: DHCPDISCOVER(br0) xx:xx:xx:xx:xx:xx
> 13:03:35 dnsmasq-dhcp[67]: DHCPOFFER(br0) 192.168.1.67 xx:xx:xx:xx:xx:xx
> 13:03:37 dnsmasq-dhcp[67]: DHCPREQUEST(br0) 192.168.1.67 xx:xx:xx:xx:xx:xx
> 13:03:37 dnsmasq-dhcp[67]: DHCPACK(br0) 192.168.1.67 xx:xx:xx:xx:xx:xx
> 13:03:37 xinetd[238]: START: tftp pid=308 from=192.168.1.67
> 13:03:37 atftpd[308]: Advanced Trivial FTP server started (0.7)
> 13:03:37 atftpd[308]:   started by inetd
> 13:03:37 atftpd[308]:   logging level: 6
> 13:03:37 atftpd[308]:   directory: /opt/tftpboot/
> 13:03:37 atftpd[308]:   user: nobody.nogroup
> 13:03:37 atftpd[308]:   log file: syslog
> 13:03:37 atftpd[308]:   server timeout: 300
> 13:03:37 atftpd[308]:   tftp retry timeout: 5
> 13:03:37 atftpd[308]:   maximum number of thread: 100
> 13:03:37 atftpd[308]:   option timeout:   enabled
> 13:03:37 atftpd[308]:   option tzise:     enabled
> 13:03:37 atftpd[308]:   option blksize:   enabled
> 13:03:37 atftpd[308]:   option multicast: enabled
> 13:03:37 atftpd[308]:      address range: 239.255.0.0-255
> 13:03:37 atftpd[308]:      port range:    1758
> 13:03:37 atftpd[310]: Serving pxelinux.0 to 192.168.1.67:2070
> 13:03:37 atftpd[310]: tsize option -> 26828
> 13:03:37 atftpd[310]: Server thread exiting
> 13:03:37 atftpd[311]: Serving pxelinux.0 to 192.168.1.67:2071
> 13:03:37 atftpd[311]: blksize option -> 1456
> 13:03:37 atftpd[311]: Server thread exiting
> 13:03:37 atftpd[312]: Serving pxelinux.cfg/80f8ccd0-db07-4681-3a3a-90e6ba1f434a to 192.168.1.67:49152
> 13:03:37 atftpd[312]: File /opt/tftpboot/pxelinux.cfg/80f8ccd0-db07-4681-3a3a-90e6ba1f434a not found
> 13:03:37 atftpd[312]: Server thread exiting
> 13:03:37 atftpd[313]: Serving pxelinux.cfg/01-xx-xx-xx-xx-xx-xx to 192.168.1.67:49153
> 13:03:37 atftpd[313]: File /opt/tftpboot/pxelinux.cfg/01-xx-xx-xx-xx-xx-xx not found
> 13:03:37 atftpd[313]: Server thread exiting
> 13:03:37 atftpd[314]: Serving pxelinux.cfg/C0A80143 to 192.168.1.67:49154
> 13:03:37 atftpd[314]: File /opt/tftpboot/pxelinux.cfg/C0A80143 not found
> 13:03:37 atftpd[314]: Server thread exiting
> 13:03:37 atftpd[315]: Serving pxelinux.cfg/C0A8014 to 192.168.1.67:49155
> 13:03:37 atftpd[315]: File /opt/tftpboot/pxelinux.cfg/C0A8014 not found
> 13:03:37 atftpd[315]: Server thread exiting
> 13:03:37 atftpd[316]: Serving pxelinux.cfg/C0A801 to 192.168.1.67:49156
> 13:03:37 atftpd[316]: File /opt/tftpboot/pxelinux.cfg/C0A801 not found
> 13:03:37 atftpd[316]: Server thread exiting
> 13:03:37 atftpd[317]: Serving pxelinux.cfg/C0A80 to 192.168.1.67:49157
> 13:03:37 atftpd[317]: File /opt/tftpboot/pxelinux.cfg/C0A80 not found
> 13:03:37 atftpd[317]: Server thread exiting
> 13:03:37 atftpd[318]: Serving pxelinux.cfg/C0A8 to 192.168.1.67:49158
> 13:03:37 atftpd[318]: File /opt/tftpboot/pxelinux.cfg/C0A8 not found
> 13:03:37 atftpd[318]: Server thread exiting
> 13:03:37 atftpd[319]: Serving pxelinux.cfg/C0A to 192.168.1.67:49159
> 13:03:37 atftpd[319]: File /opt/tftpboot/pxelinux.cfg/C0A not found
> 13:03:37 atftpd[319]: Server thread exiting
> 13:03:37 atftpd[320]: Serving pxelinux.cfg/C0 to 192.168.1.67:49160
> 13:03:37 atftpd[320]: File /opt/tftpboot/pxelinux.cfg/C0 not found
> 13:03:37 atftpd[320]: Server thread exiting
> 13:03:37 atftpd[321]: Serving pxelinux.cfg/C to 192.168.1.67:49161
> 13:03:37 atftpd[321]: File /opt/tftpboot/pxelinux.cfg/C not found
> 13:03:37 atftpd[321]: Server thread exiting
> 13:03:37 atftpd[322]: Serving pxelinux.cfg/default to 192.168.1.67:49162
> 13:03:37 atftpd[322]: tsize option -> 1942
> 13:03:37 atftpd[322]: blksize option -> 1408
> 13:03:37 atftpd[322]: Server thread exiting
> 13:03:37 atftpd[323]: Serving menu.c32 to 192.168.1.67:49163
> 13:03:37 atftpd[323]: tsize option -> 60928
> 13:03:37 atftpd[323]: blksize option -> 1408
> 13:03:37 atftpd[323]: Server thread exiting
> 13:03:37 atftpd[324]: Serving pxelinux.cfg/default to 192.168.1.67:49164
> 13:03:37 atftpd[324]: tsize option -> 1942
> 13:03:37 atftpd[324]: blksize option -> 1408
> 13:03:37 atftpd[324]: Server thread exiting
> 13:03:43 atftpd[325]: Serving kernel32 to 192.168.1.67:49165
> 13:03:43 atftpd[325]: tsize option -> 6140977
> 13:03:43 atftpd[325]: blksize option -> 1408
> 13:03:48 atftpd[325]: timeout: retrying...
> 13:03:53 atftpd[325]: timeout: retrying...
> 13:03:58 atftpd[325]: timeout: retrying...
> 13:04:03 atftpd[325]: timeout: retrying...
> 13:04:08 atftpd[325]: timeout: retrying...
> 13:04:13 atftpd[325]: client (192.168.1.67) not responding
> 13:04:13 atftpd[325]: Server thread exiting
>
>
> Here you can see a few lines of pxelinux.cfg/default
>
> DEFAULT menu.c32
> PROMPT 0
> MENU TITLE RIPLinuX 10.8
>
> LABEL Boot Linux system! (32-bit kernel)
> KERNEL kernel32
> APPEND vga=normal initrd=rootfs.cgz root=/dev/ram0 rw
>
> Regards,
> Heinz
>
> [1] http://de.archive.ubuntu.com/ubuntu/dists/lucid/main/installer-i386/current/images/netboot/netboot.tar.gz
> [2] http://www.tux.org/pub/people/kent-robotti/looplinux/rip/RIPLinux-10.8-non-X.PXE.zip
> [3] http://www.tux.org/pub/people/kent-robotti/looplinux/rip/screenshot-1.png

Looking at your output, it's possible that your ZIP extractor messed
up.  I see a tsize of 6140977 which I think normally indicates the
length of the file.  kernel32 should be 6117984 bytes and have an
md5sum of f9a1048f73be239c24cc6cd483bb9c62 (I almost always have the
current version of RIPLinuX).  My guess is that you extracted this
with an option to convert LF->CR/LF if my assumption on the file
length is correct.

-- 
-Gene