kexec won't --load-panic a 2.6.22 relocatable kernel?

[Mike Snitzer]

On Fri, Mar 21, 2008 at 1:32 AM, Simon Horman <horms at verge.net.au> wrote:
> On Wed, Mar 19, 2008 at 02:05:46AM -0400, Mike Snitzer wrote:
>  > I'm building a x86_64 2.6.22 kernel with the following options set:
>  >
>  > CONFIG_KEXEC=y
>  > CONFIG_CRASH_DUMP=y
>  > CONFIG_RELOCATABLE=y
>  > CONFIG_PHYSICAL_START=0x200000
>  >
>  > If I try to load the kernel with the following I get:
>  >
>  > ./kexec --args-linux -p '--command-line=ro root=LABEL=/1 rhgb quiet
>  > irqpoll maxcpus=1' --initrd=/boot/initrd-2.6.22.19.img
>  > /boot/vmlinuz-2.6.22.19
>  >
>  > ./kexec: unrecognized option `--args-linux'
>  > kexec-tools-testing 20080318-rc released 18th March 2008
>  > Usage: kexec [OPTION]... [kernel]
>  > ...
>  > Cannot load /boot/vmlinuz-2.6.22.19
>
>  Hi Mike,
>
>  that looks a lot like a problem with kexec-tools parsing command line
>  arguments to me. However I'm not having much luck reproducing it here.
>  I'll poke a bit more.

I agree it does look like a parsing bug but if I use the same
commandline with a different kernel (e.g. RHEL5's kernel) kexec
doesn't error out.

>  Did you get kexec-tools-testing 20080318-rc as a tarball from
>  kernel.org? I just want to make sure we are looking at the same code.

Yes, I got 20080318-rc from kernel.org.

I can provide the problematic vmlinuz offlist if you'd like.  I've not
yet had a chance to trace kexec with gdb and really dig into this
issue.

Mike