On Mon, 25 Apr 2005 17:45:43 +0530
Nagesh Sharyathi <[email protected]> wrote:
> [email protected] wrote on 23/04/2005 09:00:03:
>
> > Quoting "Eric W. Biederman" <[email protected]>:
>
> > > Nagesh Sharyathi <[email protected]> writes:
> > >
> > > > Here is the console boot log, before the machine jumps to BIOS
> > > > after hang during panic kerenl boot
> > >
> > > Ok thanks. So this is manually triggered with SysRq
> > > and the kexec part works but the recover kernel simply fails
> > > to boot.
> > >
> > > It looks like that hunk of the ACPI code that messes up maxcpus=1
> > > needs to be looked at.
>
> > It works well with Uniporcessor capture kernel. For the time being
> sufficient
> > to capture the dump but it is always good idea to be able to boot
> > and SMP kernel
> > as well.
> >
> > Vivek
> I verified on my machine where earlier kdump used to fail and after
> disabling CONFIG_SMP(ie CONFIG_SMP=n) crash kernel boots properly and I am
> able to take the memory dump
Thanks for those hints. However, my testing didn't go quite
as well as that.
2.6.12-rc2-mm3 reboots vmlinux-recover-UP on panic.
(vmlinux-recover-SMP hangs during [early] reboot, but -UP
goes further....)
(BTW, how does I do serial console from the second
kernel...? It has the drivers, but not the command
line info? TBD.)
vmlinux-recover-UP gets to this point, hand-written,
several lines missing:
kfree_debugcheck: bad ptr c3dbffb0h. ( == %esi)
kernel BUG at <bad filename>:23128!
invalid operand: 0000 [#1]
DEBUG_PAGEALLOC
EIP is at kfree_debugcheck+0x45/0x50
Stack dump shows lots of ext3 cache and inode functions...
On a dual-proc P4 with 1 GB RAM.
--
~Randy
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