[PATCH v3 0/3] livepatch: Fail object initialization on duplicate patched function

[Harry Hsu]

This is v3 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 [1].

Per Miroslav's review, the changelog and title have been reworded to
avoid implying this is livepatch-specific validation: the check runs
during object initialization, which klp_module_coming() also triggers
for a module still being loaded.

Petr found that the error path in klp_init_object_loaded() -- taken
by this new check, among others -- leaves stale object state behind
on failure. His two patches (2/3, 3/3) fix that by routing all of
klp_init_object_loaded()'s error returns through proper cleanup, and
are included in this series since they touch the same code and would
otherwise conflict with patch 1/3.

[1] https://lore.kernel.org/all/20260823060734.58443-1-x90613@xxxxxxxxx/

Harry Hsu (1):
  livepatch: Fail object initialization on duplicate patched function

Petr Mladek (2):
  livepatch: Move code for updating livepatch object relocations
  livepatch: Clean up klp_init_object_loaded() when fails

 kernel/livepatch/core.c | 117 ++++++++++++++++++++++++----------------
 1 file changed, 71 insertions(+), 46 deletions(-)

-- 
2.43.0