Anshuman Khandual <khandual@xxxxxxxxxxxxxxxxxx> writes: > On 01/07/2018 04:56 PM, Michael Ellerman wrote: >> Michal Hocko <mhocko@xxxxxxxxxx> writes: >> >>> On Sun 07-01-18 12:19:32, Anshuman Khandual wrote: >>>> On 01/05/2018 02:16 PM, Michal Hocko wrote: >>> [...] >>>>> Could you give us more information about the failure please. Debugging >>>>> patch from http://lkml.kernel.org/r/20171218091302.GL16951@xxxxxxxxxxxxxx >>>>> should help to see what is the clashing VMA. >>>> Seems like its re-requesting the same mapping again. >>> It always seems to be the same mapping which is a bit strange as we >>> have multiple binaries here. Are these binaries any special? Does this >>> happen to all bianries (except for init which has obviously started >>> successfully)? Could you add an additional debugging (at the do_mmap >>> layer) to see who is requesting the mapping for the first time? >>> >>>> [ 23.423642] 9148 (sed): Uhuuh, elf segment at 0000000010030000 requested but the memory is mapped already >>>> [ 23.423706] requested [10030000, 10040000] mapped [10030000, 10040000] 100073 anon >>> I also find it a bit unexpected that this is an anonymous mapping >>> because the elf loader should always map a file backed one. >> Anshuman what machine is this on, and what distro and toolchain is it running? >> >> I don't see this on any of my machines, so I wonder if this is >> toolchain/distro specific. > > POWER9, RHEL 7.4, gcc (GCC) 4.8.5 20150623, GNU Make 3.82 etc. So what does readelf -a of /bin/sed look like? cheers
