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. cheers
