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Subject[PATCH 18/46] kbuild: fix segfault in modpost
Date
From
Do not try to look up section name until we know it is not a special
section. Otherwise we will address outside legal space and segfault.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

---

scripts/mod/modpost.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

8ea80ca4f583e377c902811d42626ccfce16913f
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index a7360c3..eeaf574 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -576,11 +576,11 @@ static void check_sec_ref(struct module
r.r_offset = TO_NATIVE(rela->r_offset);
r.r_info = TO_NATIVE(rela->r_info);
sym = elf->symtab_start + ELF_R_SYM(r.r_info);
- secname = secstrings + sechdrs[sym->st_shndx].sh_name;
/* Skip special sections */
if (sym->st_shndx >= SHN_LORESERVE)
continue;

+ secname = secstrings + sechdrs[sym->st_shndx].sh_name;
if (section(secname))
warn_sec_mismatch(modname, name, elf, sym, r);
}
--
1.0.GIT

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