landlock: Add errata documentation section

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Add errata section with code examples for querying errata and a warning
that most applications should not check errata. Use kernel-doc directives
to include errata descriptions from the header files instead of manual
links.

Also enhance existing DOC sections in security/landlock/errata/abi-*.h
files with Impact sections, and update the code comment in syscalls.c
to remind developers to update errata documentation when applicable.

This addresses the gap where the kernel implements errata tracking
but provides no user-facing documentation on how to use it, while
improving the existing technical documentation in-place rather than
duplicating it.

Signed-off-by: Samasth Norway Ananda <samasth.norway.ananda@oracle.com>
Reviewed-by: Günther Noack <gnoack3000@gmail.com>
Link: https://lore.kernel.org/r/20260128031814.2945394-3-samasth.norway.ananda@oracle.com
[mic: Cosmetic fix]
Signed-off-by: Mickaël Salaün <mic@digikod.net>

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Samasth Norway Ananda 2026-01-27 19:18:11 -08:00 • committed by Mickaël Salaün

parent 6100f2904e

commit fe72ce6710

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65

Documentation/userspace-api/landlock.rst

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8

security/landlock/errata/abi-1.h

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7

security/landlock/errata/abi-4.h

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10

security/landlock/errata/abi-6.h

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4

security/landlock/syscalls.c

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