Hello Ken'ichi, * Ken'ichi Ohmichi <oomichi at mxs.nes.nec.co.jp> [2007-05-31 04:26]: > 2007/05/18 12:47:15 +0200, Bernhard Walle <bwalle at suse.de> wrote: > >I have a core dump with following program headers on IA64: > > > > LOAD 0x0000000000001f4c 0xa000000100000000 0x0000000004000000 > > 0x000000000055c4a0 0x000000000055c4a0 RWE 0 > >... > > LOAD 0x00000000044fc3ec 0xe000000004000000 0x0000000004000000 > > 0x0000000000c92000 0x0000000000c92000 RWE 0 > > > >The interesting thing is the overlap in the physical address space. > >write_elf_pages() assumes that there's no overlap because it looks only > >for the file offset according to the physical start address and silently > >assumes that the length matches. > > Thank you for the patch. > I'm worry that the overlapping spaces may have the same p_filesz. > I think it is certain to check it by p_offset, and created the > attached patch. Please let me know your opinion. > > > BTW, I don't know the reason why your system's /proc/vmcore has the > overlapping physical address. If you know it, please let me know. thanks for the patch. It looks more safe than my attempt to fix it. I tested your patch on the machine on which I originally had my problem. It worked without any problems. So I vote for applying the patch to your code base. :-) Thanks, Bernhard
