kbuild: fix modpost segfault for 64bit mipsel kernel
64bit mips has different r_info layout. This patch fixes modpost
segfault for 64bit little endian mips kernel.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index cd00e9f..fcd4306 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -709,10 +709,17 @@
for (rela = start; rela < stop; rela++) {
Elf_Rela r;
const char *secname;
+ unsigned int r_sym;
r.r_offset = TO_NATIVE(rela->r_offset);
- r.r_info = TO_NATIVE(rela->r_info);
+ if (hdr->e_ident[EI_CLASS] == ELFCLASS64 &&
+ hdr->e_machine == EM_MIPS) {
+ r_sym = ELF64_MIPS_R_SYM(rela->r_info);
+ r_sym = TO_NATIVE(r_sym);
+ } else {
+ r_sym = ELF_R_SYM(TO_NATIVE(rela->r_info));
+ }
r.r_addend = TO_NATIVE(rela->r_addend);
- sym = elf->symtab_start + ELF_R_SYM(r.r_info);
+ sym = elf->symtab_start + r_sym;
/* Skip special sections */
if (sym->st_shndx >= SHN_LORESERVE)
continue;