From d2eb1f8145dee61c6bddfdcc5dac3591fa03f744 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Mon, 3 Jul 2023 15:14:14 +0900
Subject: [PATCH] repart: fix free area calculation

Like fdisk_get_last_lba(), fdisk_partition_get_end() return the last
sector in the partition.

Fixes #28225.
---
 src/partition/repart.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/partition/repart.c b/src/partition/repart.c
index a65a1aa962..fc33a3eb62 100644
--- a/src/partition/repart.c
+++ b/src/partition/repart.c
@@ -1922,6 +1922,8 @@ static int determine_current_padding(
                 return log_error_errno(SYNTHETIC_ERRNO(EIO), "Partition has no end!");
 
         offset = fdisk_partition_get_end(p);
+        assert(offset < UINT64_MAX);
+        offset++; /* The end is one sector before the next partition or padding. */
         assert(offset < UINT64_MAX / secsz);
         offset *= secsz;