Messages in this thread Patch in this message | | | From | Masahiro Yamada <> | Subject | [PATCH 7/7] modpost: detect section mismatch for R_ARM_REL32 | Date | Thu, 1 Jun 2023 21:10:01 +0900 |
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For ARM, modpost fails to detect some types of section mismatches.
[test code]
.section .init.data,"aw" bar: .long 0
.section .data,"aw" .globl foo foo: .long bar - .
It is apparently a bad reference, but modpost does not report anything.
The test code above produces the following relocations.
Relocation section '.rel.data' at offset 0xe8 contains 1 entry: Offset Info Type Sym.Value Sym. Name 00000000 00000403 R_ARM_REL32 00000000 .init.data
Currently, R_ARM_REL32 is just skipped.
Handle it like R_ARM_ABS32.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> ---
scripts/mod/modpost.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 55d142bb000b..9f0c87064ca5 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -1281,6 +1281,7 @@ static int addend_arm_rel(struct elf_info *elf, Elf_Shdr *sechdr, Elf_Rela *r) switch (r_typ) { case R_ARM_ABS32: + case R_ARM_REL32: inst = TO_NATIVE(*(uint32_t *)loc); r->r_addend = inst + sym->st_value; break; -- 2.39.2
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