Re: A regression in IA64 kexec/kdump patch for 2.6.18?

[Jay Lan <jlan@engr.sgi.com>]

Jay Lan wrote:
> I ran into a problem not seen in kexec/dkump 2.6.17rc5 ia64 patch.
> The system on test was an Altix.
> 
> The system was booted up fine; however, after loading 'kexec -p'
> and "echo c >/proc/sysrq-triggeŕ", the crashdump kernel would try
> to boot up and restarted the system near the end of init().
> 
> The extraodinary message observed on the console was
>     Warning: unable to open an initial console

It failed in do_filp_open(AT_FDCWD, "/dev/console", O_RDWR, 0)
with error -2.

However, it was fine booting up as the 1st kernel.

- jay


> 
> but the actual reboot seems to be invoked in running /sbin/init:
>     run_init_process("/sbin/init");
> 
> The problem is 100% reproducible. I have disabled all cpus except
> cpu0 in my testing.
> 
> Is this a known problem? Anyone else runs into this?
> 
> Thanks,
>  - jay