Re: [PATCH 0/5] livepatch: Fail object initialization on duplicate patched function

[Petr Mladek]

Hi there,

please, ignore this mail. I am re-sending the series with v4 in the
subject. I am sorry for rumor.

Best Regards,
Petr

On Tue 2026-09-08 14:01:44, Petr Mladek wrote:
> This is v4 of the patch failing object initialization when it patches
> the same underlying function twice through two aliased symbols
> (functions sharing one address) in the same object.
> 
> Changes against [v3]:
> 
>   + Add selftest for livepatching aliased symbols [Song, Harry]
> 
>   + Only partially revert relocations when failing inside
>     klp_apply_object_relocs() [Sashiko]
> 
>   + Cleanup changes made by klp_init_object_loaded() for failing
>     patch on another failures in klp_module_coming() [Sashiko]
> 
> Changes against [v2]:
> 
>   + Clarify comments and the commit message [Miroslav]
> 
>   + Cleanup when klp_init_object_loaded() fails [Sashiko]
> 
> 
> [v2] https://lore.kernel.org/r/20260823060734.58443-1-x90613@xxxxxxxxx
> [v3] https://lore.kernel.org/r/20260830173343.52759-1-x90613@xxxxxxxxx
> 
> 
> Harry Hsu (2):
>   livepatch: Fail object initialization on duplicate patched function
>   selftests/livepatch: Test rejection of aliased symbols in one object
> 
> Petr Mladek (3):
>   livepatch: Move code for updating livepatch object relocations
>   livepatch: Clear relocations when klp_apply_object_relocs() fails
>   livepatch: Clean up klp_init_object_loaded() when fails
> 
>  kernel/livepatch/core.c                       | 137 ++++++++++++------
>  tools/testing/selftests/livepatch/Makefile    |   3 +-
>  .../testing/selftests/livepatch/test-alias.sh |  81 +++++++++++
>  .../selftests/livepatch/test_modules/Makefile |   4 +-
>  .../test_modules/test_klp_alias_patch.c       |  62 ++++++++
>  .../test_modules/test_klp_alias_target.c      |  48 ++++++
>  6 files changed, 285 insertions(+), 50 deletions(-)
>  create mode 100755 tools/testing/selftests/livepatch/test-alias.sh
>  create mode 100644 tools/testing/selftests/livepatch/test_modules/test_klp_alias_patch.c
>  create mode 100644 tools/testing/selftests/livepatch/test_modules/test_klp_alias_target.c
> 
> -- 
> 2.55.0