kpatch/0021-create-diff-object-fix-segment-fault-when-sec2-rela-.patch

From 2189dd022cda1973efdc198daa0525cbd2ee5bb2 Mon Sep 17 00:00:00 2001
From: Zhipeng Xie <xiezhipeng1@huawei.com>
Date: Fri, 17 Sep 2021 10:22:24 +0800
Subject: [PATCH 21/24] create-diff-object: fix segment fault when sec2->rela
 is NULL

when patched section has no rela section, we meet segment fault in
__kpatch_correlate_section. add sec2->rela check to fix it.

Signed-off-by: Zhipeng Xie <xiezhipeng1@huawei.com>
Signed-off-by: hubin57 <hubin57@huawei.com>
---
 kpatch-build/create-diff-object.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kpatch-build/create-diff-object.c b/kpatch-build/create-diff-object.c
index f83000b..aa5c5c4 100644
--- a/kpatch-build/create-diff-object.c
+++ b/kpatch-build/create-diff-object.c
@@ -1015,7 +1015,7 @@ static void kpatch_correlate_section(struct section *sec_orig,
 		__kpatch_correlate_section(sec_orig->base, sec_patched->base);
 		sec_orig = sec_orig->base;
 		sec_patched = sec_patched->base;
-	} else if (sec_orig->rela) {
+	} else if (sec_orig->rela && sec_patched->rela) {
 		__kpatch_correlate_section(sec_orig->rela, sec_patched->rela);
 	}
 
-- 
2.23.0