Messages in this thread | | | Date | Mon, 25 Apr 2005 16:09:25 -0700 | From | "Randy.Dunlap" <> | Subject | Re: [Fastboot] Re: Kdump Testing |
| |
On Mon, 25 Apr 2005 17:45:43 +0530 Nagesh Sharyathi <sharyathi@in.ibm.com> wrote:
> vgoyal@in.ltcfwd.linux.ibm.com wrote on 23/04/2005 09:00:03: > > > Quoting "Eric W. Biederman" <ebiederm@xmission.com>: > > > > Nagesh Sharyathi <sharyathi@in.ibm.com> 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |