[PATCH v3] livepatch: create-diff-object: Check that the section has a secsym

[Sarah Newman <sarah.newman@computer.org>]

A STT_SECTION symbol is not needed if if it is not used as a relocation
target. Therefore, a section, in this case a debug section, may not have
a secsym associated with it.

Signed-off-by: Bill Wendling <morbo@google.com>
Origin: https://github.com/dynup/kpatch.git ba3defa06073
Signed-off-by: Sarah Newman <sarah.newman@computer.org>
Reviewed-by: Ross Lagerwall <ross.lagerwall@citrix.com>
---
Changes in v3:
- add reviewed-by given to v1 of this patch
- restored tag from original commit per sending-patches.pandoc
Changes in v2:
- commit message changed to use Origin
---
 create-diff-object.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/create-diff-object.c b/create-diff-object.c
index a516670..780e6c8 100644
--- a/create-diff-object.c
+++ b/create-diff-object.c
@@ -1484,7 +1484,7 @@ static void kpatch_include_debug_sections(struct kpatch_elf *kelf)
 	list_for_each_entry(sec, &kelf->sections, list) {
 		if (is_debug_section(sec)) {
 			sec->include = 1;
-			if (!is_rela_section(sec))
+			if (!is_rela_section(sec) && sec->secsym)
 				sec->secsym->include = 1;
 		}
 	}
-- 
2.17.1