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Subject[PATCH] modpost: error out if addend_*_rel() is not implemented for REL arch
Date
The section mismatch check relies on the relocation entries.

For REL, the addend value is implicit, so we need some code to compute
it. Currently, EM_386, EM_ARM, and EM_MIPS are supported. This commit
makes sure we covered all the cases.

I believe the other architectures use RELA, where the explicit r_addend
field exists.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

scripts/mod/modpost.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 95da374cc534..44309d463a49 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -1442,6 +1442,8 @@ static void section_rel(const char *modname, struct elf_info *elf,
if (addend_mips_rel(elf, sechdr, &r))
continue;
break;
+ default:
+ fatal("Please add code to calculate addend for this architecture\n");
}
sym = elf->symtab_start + r_sym;
/* Skip special sections */
--
2.39.2
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