en Copyright 2015 Java http://kernelsources.org:8080/source/history/linux/tools/objtool/tests/generic/test-data-alignment.sh#5b6dca02b3e2254d2fd5706d76d7ab4610a67296 Merge tag 'objtool-core-2026-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipPull objtool updates from Ingo Molnar: - Add unit test suite for objtool klp functionality and known failure modes (by Song Liu and Puranjay Mohan, with fixes by Joe Lawrence)* tag 'objtool-core-2026-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (58 commits) objtool/klp: Add test for ThinLTO symbols sharing a demangled name objtool/klp: Add test for Clang switch jump tables objtool/klp: Add test for UBSAN metadata in an unchanged function objtool/klp: Add test for absolute and __ADDRESSABLE symbols objtool/klp: Add test for a patch which strips a data annotation objtool/klp: Add test for the alignment of cloned data sections objtool/klp: Add test for alternative replacement code in checksums objtool/klp: Add test for instruction operand checksums objtool/klp: Add test for a static call introduced by the patch objtool/klp: Add test for tracepoint and pr_debug static branch keys objtool/klp: Add test for a static branch introduced by the patch objtool/klp: Add test for symbols with no checksum entry of their own objtool/klp: Add test for data object checksums objtool/klp: Test text annotations on alternative replacements objtool/klp: Test a hand-built livepatch module's static call keys objtool/klp: Test rejection of a file-local static branch key objtool/klp: Add test for symbols whose linkage the patch changes objtool/klp: Add test for kCFI prefix symbols and traps objtool/klp: Add test for __bug_table, __ex_table and __mcount_loc extraction objtool/klp: Add test for static locals which must not be correlated ... List of files: /linux/tools/objtool/tests/generic/test-data-alignment.sh Wed, 21 Oct 2026 00:55:04 +0200 Linus Torvalds <torvalds@linux-foundation.org> http://kernelsources.org:8080/source/history/linux/tools/objtool/tests/generic/test-data-alignment.sh#8abe5c94bfeb9bb5cf02fa17a9337d2d7bbade75 objtool/klp: Add test for the alignment of cloned data sectionsA cloned data section has to keep its sh_addralign. Plenty of kernel datais aligned for correctness rather than speed -- per-CPU variables, anythingtouched by an aligned vector move, structures padded to own a cacheline --and a clone that lands under-aligned either faults on first use or silentlyshares a line it was laid out to avoid. Neither shows up until the patchis loaded on hardware that cares.The fixture's data is new in the patched build, so klp diff has to clone itrather than reference the kernel's copy, and it asserts that premise beforeasserting the result.Commit 2f2600decb30 ("objtool/klp: fix data alignment in __clone_symbol()")cannot be reverted to check this -- the revert is a no-op against thecurrent code, which has been rewritten since. Verified instead by forcingthe clone's alignment to 1, which the test reports as "alignment 1,expected 64".Assisted-by: Claude:claude-opus-4Based-on-test-by: Joe Lawrence <joe.lawrence@redhat.com>Assisted-by: Claude:claude-opus-5Signed-off-by: Song Liu <song@kernel.org>Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>Signed-off-by: Ingo Molnar <mingo@kernel.org>Link: https://patch.msgid.link/20260916184351.2720310-54-song@kernel.org List of files: /linux/tools/objtool/tests/generic/test-data-alignment.sh Wed, 16 Sep 2026 20:43:46 +0200 Song Liu <song@kernel.org>