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objtool: Fix data alignment in elf_add_data()

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Any data added to a section needs to be aligned in accordance with the
section's sh_addralign value.  Particularly strings added to a .str1.8
section.  Otherwise you may get some funky strings.

Fixes: dd590d4d57 ("objtool/klp: Introduce klp diff subcommand for diffing object files")
Link: https://patch.msgid.link/d962fc0ca24fa0825cca8dad71932dccdd9312a9.1772681234.git.jpoimboe@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
This commit is contained in:
Josh Poimboeuf
2026-03-04 19:31:20 -08:00
parent 3223404910
commit 356e4b2f5b
1 changed files with 1 additions and 1 deletions
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2
tools/objtool/elf.c
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@@ -1375,7 +1375,7 @@ void *elf_add_data(struct elf *elf, struct section *sec, const void *data, size_
memcpy(sec->data->d_buf, data, size);
sec->data->d_size = size;
sec->data->d_align = 1;
sec->data->d_align = sec->sh.sh_addralign;
offset = ALIGN(sec->sh.sh_size, sec->sh.sh_addralign);
sec->sh.sh_size = offset + size;