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  1. Lustre
  2. LU-4787

OOPS from null pointer dereference in mdc_unpack_acl

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    • Icon: Bug Bug
    • Resolution: Duplicate
    • Icon: Major Major
    • Lustre 2.6.0
    • Lustre 2.6.0, Lustre 2.5.1, Lustre 2.4.3
    • None
    • ZFS based 2.5.1 MGS/MDS/OSS + 2.5.1 or in-kernel client
    • 3
    • 13166

      A kernel oops is generated when body->aclsize != 0 in mdc_unpack_acl, but posix_acl_from_xattr
      returns a null pointer. The pointer is checked for error codes, but not for a null value.
      The cause of the problem is most likely some data corruption on the MDT side, but the client should tolerate this by sending an error.

        1. 0001-QL-Lustre-Avoid-null-pointer-dereference-in-mdc_unpa.patch
          1 kB
        2. lustre-acl-oops
          5 kB

            wc-triage WC Triage
            rfehren Roland Fehrenbacher
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              Created:
              Updated:
              Resolved: