Re: 2.6.19-rc1: kexec broken on x86_64

["Magnus Damm" <magnus.damm@gmail.com>]

Hi Vivek,

On 10/5/06, Vivek Goyal <vgoyal@in.ibm.com> wrote:
> On Thu, Oct 05, 2006 at 07:28:35PM +0900, Magnus Damm wrote:
> > Kexec is broken on x86_64 under 2.6.19-rc1.
> >
> > Or rather - kexec works ok under 2.6.19-rc1, but something related to
> > the vmlinux format has probably changed and kexec-tools fails to load
> > a vmlinux from 2.6.19-rc1.
> >
> > Loading bzImage works as usual, but vmlinux does not load properly.
> >
> > The kexec binary fails with the following message:
> >
> > Overlapping memory segments at 0x351000
> > sort_segments failed
> > / #
> >
>
> Hi Magnus,
>
> Can you please post the readelf -l output of the vmlinux you are trying
> to load. That's will give some indication if the segments are really
> overlapping in vmlinux or is it some processing bug at kexec-tools part.

Elf file type is EXEC (Executable file)
Entry point 0x100100
There are 4 program headers, starting at offset 64

Program Headers:
 Type           Offset             VirtAddr           PhysAddr
                FileSiz            MemSiz              Flags  Align
 LOAD           0x0000000000100000 0xffffffff80100000 0x0000000000100000
                0x00000000001a4888 0x00000000001a4888  R E    100000
 LOAD           0x00000000002a5000 0xffffffff802a5000 0x00000000002a5000
                0x000000000008e086 0x00000000000c1504  RWE    100000
 LOAD           0x0000000000400000 0xffffffffff600000 0x00000000002fd000
                0x0000000000000c08 0x0000000000000c08  RWE    100000
 NOTE           0x0000000000000000 0x0000000000000000 0x0000000000000000
                0x0000000000000000 0x0000000000000000  R      8

Section to Segment mapping:
 Segment Sections...
  00     .text __ex_table .rodata .pci_fixup __ksymtab __ksymtab_gpl
__ksymtab_unused __ksymtab_strings __param
  01     .data .data.cacheline_aligned .data.read_mostly
.data.init_task .data.page_aligned .init.text .init.data .init.setup
.initcall.init .con_initcall.init .altinstructions
.altinstr_replacement .exit.text .init.ramfs .bss
  02     .vsyscall_0 .xtime_lock .vxtime .vgetcpu_mode .sys_tz
.sysctl_vsyscall .xtime .jiffies .vsyscall_1 .vsyscall_2 .vsyscall_3
  03

Thanks,

/ magnus
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