diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 449b094..879ff1b 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -2293,6 +2293,7 @@ int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
 	unsigned int sit_bitmap_size, nat_bitmap_size;
 	unsigned int log_blocks_per_seg;
 	unsigned int segment_count_main;
+	unsigned int cp_pack_start_sum, cp_payload;
 	block_t user_block_count;
 	int i;
 
@@ -2353,6 +2354,17 @@ int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi)
 		return 1;
 	}
 
+	cp_pack_start_sum = __start_sum_addr(sbi);
+	cp_payload = __cp_payload(sbi);
+	if (cp_pack_start_sum < cp_payload + 1 ||
+		cp_pack_start_sum > blocks_per_seg - 1 -
+			NR_CURSEG_TYPE) {
+		f2fs_msg(sbi->sb, KERN_ERR,
+			"Wrong cp_pack_start_sum: %u",
+			cp_pack_start_sum);
+		return 1;
+	}
+
 	if (unlikely(f2fs_cp_error(sbi))) {
 		f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck");
 		return 1;