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  1. Lustre
  2. LU-12811

lustre_swab_fiemap needs to check fm_mapped_extents

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: Lustre 2.13.0, Lustre 2.12.3
    • Fix Version/s: Lustre 2.14.0
    • Labels:
    • Severity:
      3
    • Rank (Obsolete):
      9223372036854775807

      Description

      It looks like lustre_swab_fiemap can go beyond request buffer as it uses extent count number from network without any checking at face value

      similar problem exist at lustre_swab_lmv_mds_md_v1 for lmm1->lmv_stripe_count

      lustre_swab_object_update for ou->ou_params_count

        Attachments

          Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-13592 Pass buflen to swabbing functions to avoid memory corruption

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. LU-12742 Memory corruption in fiemap tests

          • Blocker - Blocks development and/or testing work, production could not run.
          • Resolved

            Activity

              People

              • Assignee:
                emoly.liu Emoly Liu
                Reporter:
                green Oleg Drokin
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                Dates

                • Created:
                  Updated:
                  Resolved: