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create_fake_symbols() gives each special section entry a symbol so entries can be extracted individually. Entries with ANNOTATE_DATA_SPECIAL are handled first; the rest have their boundaries derived from the entry or relocation size. The second pass has to key off whether the first one created symbols, not off whether the section already has something at offset 0. Clang puts an assembler-local label at the start of .kcfi_traps, and treating that as already handled means nothing is extracted: klp diff still reports the changed function and succeeds, but the special section is missing from the module. The fixture reproduces the shape without needing CFI or x86. Signed-off-by: Puranjay Mohan <puranjay@kernel.org> Signed-off-by: Song Liu <song@kernel.org> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Assisted-by: Claude:claude-opus-5 Link: https://patch.msgid.link/20260916184351.2720310-18-song@kernel.org |
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