Posix ACL object is leaked in setattr and fsetxattr syscalls
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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