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  1. Lustre
  2. LU-15815

fast_read/stale data/reclaim workround causes SIGBUS

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Details

    • Bug
    • Resolution: Fixed
    • Critical
    • Lustre 2.15.0
    • None
    • None
    • 3
    • 9223372036854775807

    Description

      The fast_read stale data workaround from LU-14541 can cause applications to receive a spurious SIGBUS when reclaim runs concurrently with page fault handler for mmaped files.

      Attachments

        1. image_2022-05-03_13-25-27.png
          6 kB
          Andrew Perepechko
        2. mmap_fault_vs_drop_caches3.c
          2 kB
          John Hammond
        3. osu_alltoall_trimmed.dk
          84 kB
          John Hammond

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. LU-15819 Executables run from Lustre may receive spurious SIGBUS signals

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed
          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-12587 DIO fallback to Buffer IO unexpectedly

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

          Bug - A problem which impairs or prevents the functions of the product. LU-16160 take ldlm lock when queue sync pages

          • Major - Major loss of function.
          • Resolved
          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-8633 SIGBUS under memory pressure with fast_read enabled

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. LU-14541 Memory reclaim caused a stale data read

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved

          Activity

            People

              panda Andrew Perepechko
              jhammond John Hammond
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              Dates

                Created:
                Updated:
                Resolved: