ARM: module: ignore unwind for sections not marked SHF_ALLOC

If a section is not marked with SHF_ALLOC, it will be discarded
by the module code.  Therefore, it is not correct to register
the unwind tables.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index f9937c4b7d1..0c1bb68ff4a 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -290,6 +290,9 @@ int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs,
         for (s = sechdrs; s < sechdrs_end; s++) {
                 const char *secname = secstrs + s->sh_name;
 
+                if (!(s->sh_flags & SHF_ALLOC))
+                        continue;
+
                 if (strcmp(".ARM.exidx.init.text", secname) == 0)
                         maps[ARM_SEC_INIT].unw_sec = s;
                 else if (strcmp(".ARM.exidx.devinit.text", secname) == 0)