From d2253833b89d1ba50cb2224e36d0ac462f916023 Mon Sep 17 00:00:00 2001
From: Matheus <matheusuky@gmail.com>
Date: Thu, 20 Aug 2026 23:34:36 -0300
Subject: [PATCH] fatfs: fix truncation

---
 kernel-src/fs/fat/fatfs.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/kernel-src/fs/fat/fatfs.c b/kernel-src/fs/fat/fatfs.c
index 20cd081e..8c00f9e7 100644
--- a/kernel-src/fs/fat/fatfs.c
+++ b/kernel-src/fs/fat/fatfs.c
@@ -930,9 +930,10 @@ static int fatfs_resize(vnode_t *vnode, size_t new_size, cred_t *cred) {
 	fatfs_t *fs = (fatfs_t *)vnode->vfs;
 
 	int error = 0;
-	if (node->size != new_size) {
+	size_t old_size = node->size;
+	if (old_size != new_size) {
 		error = fatfs_resize_file(fs, node, new_size);
-		if (node->size > new_size)
+		if (error == 0 && old_size > new_size)
 			mm_cache_truncate(vnode, new_size);
 	}