From 2b58dec87b584aa7ded6e8c736498716f8d29cd0 Mon Sep 17 00:00:00 2001
From: GuEe-GUI <2991707448@qq.com>
Date: Tue, 17 Mar 2026 19:39:50 +0800
Subject: [PATCH] [dm][block] fixup the EFI partition checked in 32bits

Link: https://github.com/RT-Thread/rt-thread/issues/11260

Signed-off-by: GuEe-GUI <2991707448@qq.com>
---
 components/drivers/block/partitions/efi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/components/drivers/block/partitions/efi.c b/components/drivers/block/partitions/efi.c
index a68a1470a1..22f6ba1659 100644
--- a/components/drivers/block/partitions/efi.c
+++ b/components/drivers/block/partitions/efi.c
@@ -411,6 +411,11 @@ static rt_bool_t is_gpt_valid(struct rt_blk_disk *disk,
     pt_size = (rt_uint64_t)rt_le32_to_cpu((*gpt)->num_partition_entries) *
             rt_le32_to_cpu((*gpt)->sizeof_partition_entry);
 
+    if (pt_size > (rt_uint64_t)RT_UINT32_MAX)
+    {
+        goto _fail;
+    }
+
     if (!(*ptes = alloc_read_gpt_entries(disk, *gpt)))
     {
         goto _fail;