Posix ACL object is leaked in setattr and fsetxattr syscalls

Solution Verified - Updated -

Issue

Slab usage grows and is never reclaimed, even when the underlying program that prompted the allocation exits.

Environment

  • Red Hat Enterprise Linux 7
  • EXT4 filesystem
  • Various kernel versions are believed to be affected, the issue has been observed on these versions:
    • kernel-3.10.0-1127.el7
    • kernel-3.10.0-1062.el7
    • kernel-3.10.0-957.el7
    • kernel-3.10.0-862.el7
    • kernel-3.10.0-693.55.1.el7

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