diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
index ca2743f9c634..79c012fbb49c 100644
--- a/kernel/kexec_core.c
+++ b/kernel/kexec_core.c
@@ -1035,6 +1035,7 @@ int crash_shrink_memory(unsigned long new_size)
 	start = crashk_res.start;
 	end = crashk_res.end;
 	old_size = (end == 0) ? 0 : end - start + 1;
+	new_size = roundup(new_size, KEXEC_CRASH_MEM_ALIGN);
 	if (new_size >= old_size) {
 		ret = (new_size == old_size) ? 0 : -EINVAL;
 		goto unlock;
@@ -1046,9 +1047,7 @@ int crash_shrink_memory(unsigned long new_size)
 		goto unlock;
 	}
 
-	start = roundup(start, KEXEC_CRASH_MEM_ALIGN);
-	end = roundup(start + new_size, KEXEC_CRASH_MEM_ALIGN);
-
+	end = start + new_size;
 	crash_free_reserved_phys_range(end, crashk_res.end);
 
 	if ((start == end) && (crashk_res.parent != NULL))