1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/kexec.c b/kernel/kexec.c
index 8d814cbc8109..296fbc84d659 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1095,7 +1095,7 @@ size_t crash_get_memory_size(void)
         size_t size = 0;
         mutex_lock(&kexec_mutex);
         if (crashk_res.end != crashk_res.start)
-                size = crashk_res.end - crashk_res.start + 1;
+                size = resource_size(&crashk_res);
         mutex_unlock(&kexec_mutex);
         return size;
 }