Re: [Crash-utility] Re: crash-4.0-4.3 and linux-2.6.22.1-20.fc7

* Andi Kleen <andi(a)firstfloor.org&gt; [2007-07-23 12:26]: >What might have changed when you enable the relocatable kernel >is that the ELF addresses in the vmlinux are different. But >at runtime there is no difference. But that change only broke GDB (> 6.5) and not crash (which is based on GDB 6.1). See http://sourceware.org/ml/gdb/2007-06/msg00020.html. Thanks, Bernhard -- Crash-utility mailing list Crash-utility(a)redhat.com https://www.redhat.com/mailman/listinfo/crash-utility

Hi Dave, Sorry, could not reply on Friday. This looks weared. Only one possible theory comes to mind. In FC7 kernels following should be config variables. CONFIG_PHYSICAL_START=16MB CONFIG_PHYSICAL_ALIGN=4MB. That means kernel has been compiled for 16MB physical address. That's why linux_banner symbol address is in higher range. But at run time it has been loaded by grub at 1MB location. Because alignment required is 4MB kernel will move itself to physical address 4MB and that would probably put linux banner somewhere at 6MB location. So these kind of problems will occur with first kernel is not run at the address it has been compiled for. Can you please confirm this by looking at FC7 config file. An easy way to fix this would be to change CONFIG_PHYSICAL_START=1MB. Thanks Vivek